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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 8470. Отображено 100.

12-01-2012 дата публикации

System method and device for leak detection and localization in a pipe network

Номер: US20120007743A1

Автор: David Solomon

Принадлежит: Aquarius Spectrum Ltd

The invention provides a system for leak detection of a fluid in a pipe network. The system includes flow meters, and vibration detectors adapted to be attached to a pipe at a location in the pipe network. A processor analyzes signals generated by the flow meters and vibration detectors to identify the presence of one or more leaks in the pipe network. The invention also provides a method for detecting and localizing leaks in a pipeline network, and a device comprising a flow meter integral with a vibration detector for use in the system of the invention.

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Номер записи: 1

26-01-2012 дата публикации

Nebulizer and method of operation of a nebulizer

Номер: US20120017894A1

Автор: Sebastien Cinquin

Принадлежит: SYSTEM ASSISTANCE MEDICAL

Nebulizer and method of operation of a nebulizer comprising a cupel capable of containing a liquid and a vibrating member ( 4 ) capable of emitting, under the effect of a control signal originating from a control circuit ( 10 ), an ultrasound beam making it possible to transform the liquid into mist, in which the vibrating member ( 4 ) is sensitive to the sound wave produced during the transformation of the liquid into mist and detection means ( 14 ) detect the presence and/or the absence and/or the value of a sound signal originating from the vibrating member, or of a signal corresponding to a sound signal originating from said vibrating member.

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Номер записи: 2

24-05-2012 дата публикации

Quantitative acoustic emission non-destructive inspection for revealing, typifying and assessing fracture hazards

Номер: US20120125108A1

Автор: Boris Muravin, Gregory Muravin, Itzik Mizrahi, Ludmila Lezvinsky

Принадлежит: Margan Physical Diagnostics Ltd

Inspecting for fracture hazards by detecting a presence of at least one flaw development process in an equipment under inspection, the flaw development process being corrosion product nucleation and development, pitting, plastic deformation development, and/or micro-cracking. Detecting the presence of the flaw development process includes (a) determining at least one characteristic acoustic emission (AE) signature associated with a respective flaw development process, and (b) measuring an AE from each of a plurality of locations within the equipment. Presence of the respective flaw development process is identified only when the measured AE conforms to the characteristic AE signature within a predetermined tolerance. A fracture hazard is determined to exist only when (a) a quantity of the identified flaw development processes exceeds a first predetermined threshold and/or (b) a magnitude of at least one of the identified flaw development processes exceeds a second predetermined threshold.

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Номер записи: 3

11-10-2012 дата публикации

Acoustic wave (aw) sensing devices using live cells

Номер: US20120258444A1

Автор: Abiche H. Dewilde, Gang Wang, Hongwei Sun, Jianping Zhang, Joel M. Therrien, Kenneth A. Marx, Lian Dai, Malavika Vashist, Sai Liu, Susan J. Braunhut

Принадлежит: University of Massachusetts UMass

In one embodiment according to the invention, there is provided a method of sensing a response of a living cell or virus to a change in conditions. The method comprises applying an essentially constant external electromotive force that causes oscillation of an acoustic wave device at essentially constant amplitude and frequency under steady state conditions. The acoustic wave device has attached at least one living cell or virus. A combined oscillating system including the acoustic wave device and the living cell or virus exhibits a fundamental frequency and at least one harmonic frequency of the combined oscillating system. The living cell or virus is exposed to a change in an environmental condition while oscillating the combined oscillating system under the essentially constant external electromotive force, whereby a response of the living cell or virus to the change in environmental condition will be indicated by a change in at least one of frequency and amplitude of the oscillation of at least one harmonic frequency of the combined oscillating system.

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Номер записи: 4

15-11-2012 дата публикации

Unpowered wireless sensor systems and methods

Номер: US20120286935A1

Автор: Haiying Huang

Принадлежит: University of Texas System

Devices, methods, and systems for wireless transmission of data from unpowered sensor nodes are presented. An unpowered sensor node includes a sensor, a first antenna for receiving an interrogation signal from a remote source, an up-converting frequency mixer, and a second antenna for transmitting a modulated output signal. A remote sensor interrogation unit generates and transmits the interrogation signal; then receives and demodulates the modulated output signal from the sensor nodes. Any type of sensor that generates an oscillatory signal can operate without a local power source. For a sensor that generates a non-oscillatory signal, the sensor node includes a low-power signal conditioning unit to convert the signal to an oscillatory signal. The sensor node may include an energy harvester such as a photocell to power the signal conditioning unit. A low-cost network of unpowered sensor nodes may be interrogated by a single interrogation unit using a multiplexing scheme.

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Номер записи: 5

29-11-2012 дата публикации

Excitation device and method for downhole seismic testing using the same

Номер: US20120298440A1

Автор: Chang-Guk SUN

Принадлежит: Korea Institute of Geoscience and Mineral Resources KIGAM

An excitation device for downhole seismic testing, includes an excitation hammer, a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof, a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, and an excitation source configured to allow the support post to stand upright on the upper side thereof and which generates a seismic wave when struck by the rotated excitation hammer. The support post is formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on the upper side of the excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other.

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Номер записи: 6

06-12-2012 дата публикации

Particle Analysis in an Acoustic Cytometer

Номер: US20120304749A1

Автор: Gregory Kaduchak, Michael D. Ward

Принадлежит: Los Alamos National Security LLC

The present invention is a method and apparatus for acoustically manipulating one or more particles.

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Номер записи: 7

18-04-2013 дата публикации

METHOD AND SYSTEM FOR DIAGNOSIS OF THE INTERNAL STATE OF A BATTERY THROUGH ACOUSTIC EMISSION

Номер: US20130091950A1

Автор: Bernard Julien

Принадлежит: IFP ENERGIES NOUVELLES

The invention relates to a method of estimating the internal state of a first electrochemical system for electric power storage, such as a battery, wherein at last one property relative to the internal state of the first electrochemical system is estimated from acoustic emission measurements. 115-. (canceled)16. A method of estimating an internal state of a first electrochemical system for electrical power storage wherein at least one property relative to the internal state of the first electrochemical system is estimated from acoustic emission measurements , comprising:measuring for different internal states of at least a second electrochemical system of identical type as the first electrochemical system an acoustic emission response from the second electrochemical system corresponding to each internal state;recording for each acoustic emission response a signal characteristic of the acoustic emission response from the second system;processing the recorded signals characteristic of the second system by grouping the signals into populations of signals having common parameters;determining an acoustic signature of an internal state of the second electromechanical system by calibrating a relationship between at least one of the parameters common to at least one acoustic signal population and an internal state of the second electromechanical system by an analysis of values of at least one common parameter of the acoustic signal populations obtained for each of the internal states;obtaining an acoustic emission response from the first electrochemical system to obtain at least one signal characteristic of the acoustic emission measurements from the first system; andestimating the internal state of the first electrochemical system from the relationship by detecting at least one parameter characteristic of an acoustic signature of an internal state in the signal characteristic of the acoustic emission response from the first system.17. A method as claimed in claim 16 , ...

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Номер записи: 8

25-04-2013 дата публикации

METHOD FOR ANALYZING VIBRATION PROPERTY OF MEMBER INCLUDING PIEZOELECTRIC ELEMENT

Номер: US20130098156A1

Автор: Ando Toshiki, TAKIKAWA Kenichi

Принадлежит: NHK SPRING CO., LTD.

A method for accurately and speedy analyzing vibration property of head suspension including a piezoelectric element that moves a head according to voltage application. The method comprises a displacement obtaining step obtaining displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element, a reaction force obtaining step eliminating the voltage application and applying the obtained displacement to each node point, a reaction force applying step eliminating the applied displacement and applying obtained reaction force to each node point, and an analyzing step performing the frequency response analysis by using mode superposition method. 1. A method for analyzing vibration property of a member including a moving portion and a piezoelectric element that moves the moving portion according to voltage application , the method comprising:an obtaining step obtaining reaction force or displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element;an applying step eliminating the voltage application and applying the obtained reaction force or the displacement to each node point of the piezoelectric element; andan analyzing step performing frequency response analysis by using mode superposition method according to the applied reaction force or the displacement.2. A method for analyzing vibration property of a member having a moving portion and a piezoelectric element that moves the moving portion according to voltage application , the method comprising:a first obtaining step obtaining one of reaction force and displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element;a second obtaining step eliminating the voltage application and obtaining the other of the displacement and the reaction force of each node point of the piezoelectric element by applying the obtained one of the reaction force and the displacement;an applying ...

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Номер записи: 9

09-05-2013 дата публикации

Method for Detecting Damage to Bearing

Номер: US20130116936A1

Автор: YAMAMOTO Shinjiro

Принадлежит:

A bearing damage detection method, comprising: executing frequency analysis for a vibration waveform of the vibration at the bearing obtained through measurement by sensor; setting at least two frequency ranges each substantially equal to a range defined by a rotation frequency fr of the moving ring which do not overlap, based upon results of the frequency analysis; obtaining peak frequencies, each manifesting in one of the plurality of frequency ranges having been set; and determining that the bearing is to be damaged upon deciding that the difference between the peak frequencies and the k multiple of the rotation frequency fr having been compared with each other may be regarded to be matched. 1. A bearing damage detection method for detecting damage to a bearing , comprising an inner ring , an outer ring , rolling elements that roll in contact with the inner ring and the outer ring , and a cage that holds the rolling elements , the method comprising:measuring vibration of the bearing occurring while a moving ring, i.e., either the inner ring or the outer ring, rotates by a sensor;executing frequency analysis for a vibration waveform of the vibration at the bearing, obtained through the measuring by the sensor;setting at least two frequency ranges each substantially equal to a range defined by a rotation frequency fr of the moving ring, i.e., either the inner ring or the outer ring, which do not overlap, based upon results of the frequency analysis;obtaining peak frequencies, each manifesting in one of the plurality of frequency ranges having been set;comparing a difference between the peak frequencies having been determined with a k multiple (k is an integer equal to or greater than 1) of the rotation frequency fr;making a decision whether or not the difference between the peak frequencies and k multiple of the rotation frequency fr, having been compared with each other may be regarded to be matched; anddetermining that the bearing is to be damaged upon deciding ...

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Номер записи: 10

13-06-2013 дата публикации

Probing system for measurement of micro-scale objects

Номер: US20130145848A1

Автор: Chan-Seo Goo, Martin B.G. Jun

Принадлежит: UVic Industry Partnerships Inc

An apparatus for measuring dimensions of a micro-scale object includes a movable stylus, a probe and at least one acoustic emissions sensor. The movable stylus is positionable to contact an object to be measured. The probe is rotatably coupled to the stylus and has a distal end that circumscribes a circle when rotated. The acoustic emissions sensor is operatively coupled to the probe. The sensor is operative to detect acoustic emissions generated from contact between the distal end of the probe and the object, thereby allowing dimensions of the object to be determined.

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Номер записи: 11

27-06-2013 дата публикации

Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts

Номер: US20130166214A1

Автор: Federico Bellin

Принадлежит: Varel International Industries LP

An acoustic emissions testing device includes a test cutter including a first surface, an acoustic sensor, an indenter coupled to the first surface, and a load. The load is exerted on the indenter, which transfers the load to the first surface. The acoustic sensor is communicably coupled to the test cutter and detects one or more acoustic events occurring therein. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the test cutter is objectively determined and can be ranked comparatively to the toughness of other test cutters. The load is ramped up to a peak load, held for a period of time, and then ramped down. Cutters from the same cutter type as the test cutters have similar toughness.

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Номер записи: 12

04-07-2013 дата публикации

DEVICE FOR INSPECTING A MOVING METAL STRIP

Номер: US20130167644A1

Автор: Deschamps Olivier, Michaut Marc

Принадлежит: SIEMENS VAI METALS TECHNOLOGIES SAS

A device for inspecting a moving metal strip includes a first electromagnetic acoustic transducer having an ultrasonic wave emitter. The waves emitted from the emitter are emitted to be incident on a first edge of a surface of the strip, and the emitter is not in contact with the strip. A second electromagnetic acoustic transducer is provided and includes an ultrasonic wave receiver. The waves received emerging from an area of the strip surface toward the receiver, the receiver is not in contact with the strip. A processing unit is coupled to the second electromagnetic acoustic transducer to provide an inspection criterion using a signature of the ultrasonic waves measured. The area is located on the strip such that a wave path between the first edge of the strip and the area is aligned in a linear direction mainly transverse to the direction of movement of the strip. 111-. (canceled)12. A device for inspecting a moving metal strip , the device comprising:a first electromagnetic acoustic transducer (EMAT) having an ultrasonic wave emitter, ultrasonic waves being emitted from said ultrasonic wave emitter being incident on a first edge of a surface of the metal strip, said ultrasonic wave emitter not being in contact with the metal strip;a second EMAT having an ultrasonic wave receiver, the ultrasonic waves being received emerging from an area of a strip surface disposed toward said ultrasonic wave receiver, said ultrasonic wave receiver not being in contact with the metal strip;a processing unit coupled to said second EMAT and providing at least one inspection criterion using at least one signature of the ultrasonic waves measured at said second EMAT; andthe area of the strip surface disposed on the metal strip such that a wave path between the first edge of the metal strip and the area is aligned in a linear direction mainly transverse to a direction of a movement of the strip.13. The inspection device according to claim 12 , wherein as far as possible away from the ...

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Номер записи: 13

08-08-2013 дата публикации

CRIME PREVENTION DEVICE, CRIME PREVENTION SYSTEM AND METHOD FOR DETERMINING STATE OF OPENING/CLOSING BODY

Номер: US20130199095A1

Автор: Kasai Shigeru, SASAKI YASUHIRO, Shinoda Shigeki

Принадлежит: NEC Corporation

[Problem] 11. A crime prevention device , comprising:an excitation unit for applying vibration to an opening/closing body for opening/closing an opening section of a building;a detection unit for detecting the vibration of the opening/closing body to which the vibration has been applied by the excitation means; anda determination unit for determining the state of the opening/closing body on the basis of the feature of the detected vibration of the opening/closing body.12. The crime prevention device according to claim 11 , wherein the state of the opening/closing body is any one of a first state in which the opening/closing body is closed and locked claim 11 , a second state in which the opening/closing body is closed and unlocked claim 11 , and a third state in which the opening/closing body is opened.13. The crime prevention device according to claim 11 , wherein the feature of the vibration is at least one of a period of time and magnitude of the vibration.14. The crime prevention device according to claim 11 , further comprising:an electromechanical transducer element;wherein the excitation unit and the detection unit are included in the electromechanical transducer element.15. The crime prevention device according to claim 11 , further comprising:a storage means for storing features depending on the state of the opening/closing body.16. The crime prevention device according to claim 11 , further comprising:a power feeding unit for feeding electric power to the excitation unit, the detection unit and the determination unit.17. The crime prevention device according to claim 11 , further comprising:a radio unit for transmitting the result of determination performed by the determination means.18. The crime prevention device according to claim 11 , further comprising:a signal processing unit; a filtering unit for eliminating undesired signals from a signal depending on the detected vibration of the opening/closing body, and', 'an amplification unit for amplifying ...

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Номер записи: 14

22-08-2013 дата публикации

METHOD AND APPARATUS FOR DETECTING CRACKS AND DELAMINATION IN COMPOSITE MATERIALS

Номер: US20130213137A1

Автор: Ostapenko Sergei

Принадлежит:

A method is disclosed for testing for delamination of a first composite component from a second composite component a composite material. The method comprises coupling a broad-band actuator to the composite material and connecting sweeping frequencies to the broad-band actuator for vibrating the composite material. An acoustic sensor is coupled to the composite material for measuring a resonant frequency curve of the vibrating composite material. The measured resonant frequency curve of the vibrating composite material is compared with a reference resonant frequency curve. A delaminated composite material produces a change in the measured resonant frequency curve relative to the reference resonant frequency curve. The method is suitable for detecting delamination in fuel cells as well as ceramic body armor. 1. A method for testing for delamination of a first composite component from a second composite component of a composite material , comprising the steps of:coupling a broad-band actuator to the composite material;connecting sweeping frequencies to the broad-band actuator for vibrating the composite material;coupling at least one acoustic sensor to the composite material for measuring a peak frequency, an amplitude and a bandwidth of a resonant frequency curve of the vibrating composite material;comparing the measured peak frequency, amplitude and bandwidth of the resonant frequency curve of the vibrating composite material with a peak frequency, amplitude and bandwidth of a reference resonant frequency curve; andindicating a delaminated composite material in the event the composite material produces a change in one of the measured peak frequency, amplitude and bandwidth of the resonant frequency curve relative to the frequency, amplitude and bandwidth of the reference resonant frequency curve.2. A method for testing for delamination as set forth in claim 1 , wherein the step of coupling at least one acoustic sensor to the composite material includes coupling at ...

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Номер записи: 15

26-09-2013 дата публикации

BLADE VIBRATION MEASURING APPARATUS

Номер: US20130247671A1

Автор: Hirano Toshio, Hirate Toshiaki, Matsuda Hisashi, Mizuno Sueyoshi, NAKAYAMA Kohichi, OSAKI Kenji, Saito Ikuo, Sakakida Hitoshi

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to the embodiment, there is provided a blade vibration measuring apparatus, having, a contactless displacement 5 sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction, a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor 10 and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor, and a blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance 15 between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device. 1. A blade vibration measuring apparatus , comprising:a contactless displacement sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction;a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor; anda blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device.2. The blade vibration measuring apparatus according to claim 1 ,wherein a ...

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Номер записи: 16

17-10-2013 дата публикации

Resonance inspection-based surface defect system/method

Номер: US20130269435A1

Автор: Leanne Jauriqui

Принадлежит: Vibrant Corporation

A system and method for evaluating a part-under-test ( 120 ) is disclosed. The part-under-test ( 120 ) is excited using at least one drive frequency. A first surface acoustical wave (SAW) mode ( 206 ) is identified in the frequency response ( 200 ). A separate reference peak ( 204 ) for the identified SAW mode ( 206 ) is also identified in the frequency response ( 200 ). At least one degeneracy assessment zone ( 208 ) is evaluated for existence of a surface defect trigger condition. If a surface defect trigger condition exists, the part-under-test ( 120 ) may be rejected. Otherwise, the part-under-test ( 120 ) may be accepted.

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Номер записи: 17

17-10-2013 дата публикации

Flaw Detection Method and Apparatus for Fuel Cell Components

Номер: US20130269436A1

Автор: Stephen Couse, Tulin Akin

Принадлежит: Bloom Energy Corp

Various embodiments provide systems and methods for detecting defects in components of a fuel cell. Embodiment methods and systems include directing acoustic energy into the component, detecting acoustic energy from the component, analyzing a characteristic of the detected acoustic energy, and based on the analyzing, determining the presence or absence of a defect in the component.

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Номер записи: 18

14-11-2013 дата публикации

Process to Monitor Unwanted Formation of a Polymer having Internal Strain by Acoustic Emission Analysis

Номер: US20130298678A1

Автор: Alcuri Gustav, Thoret Bauchet Jean-Pierre

Принадлежит: TOTAL RESEARCH & TECHNOLOGY FELUY

A process to monitor unwanted formation of a polymer having internal mechanical strain is disclosed. The acoustic emission generated by polymer formation is detected by one or more acoustic sensors attached to a piece of equipment. 118-. (canceled)19. A process to monitor unwanted formation of a polymer having internal mechanical strain comprising:supplying equipment comprising an acoustic sensor, wherein the acoustic sensor is a resonant piezo-electric transducer comprising filtering means to select a frequency range and wherein the resonant piezo-electric transducer is in electric communication with a conditioner unit comprising a filtering means and an operational preamplifier; anddetecting acoustic emission generated by the polymer formation using the acoustic sensor,wherein said polymer is a popcorn polymer deriving from 1,3-butadiene, isoprene, dimethyl-2,3-buta-1,3-diene, chloroprene, bromoprene, styrene containing impurities, divinylbenzene, and styrene containing traces of divinylbenzene,20. The process according to wherein each acoustic sensor attached to the piece of equipment turns the acoustic emission to an electrical or digital signal.21. The process according to wherein the filtering means selects the frequency range characterizing formation of a specific polymer.22. The process according to wherein the the filtering means forms an output signal comprising damped oscillations.23. The process according to wherein said conditioner unit is connected to a unit in which there is at least one adjustable threshold level.24. The process according to wherein there is a plurality of cascaded threshold levels.25. The process according to wherein a pulse counter is connected to the conditioner unit whenever an oscillation is over a threshold level a pulse is counted.26. The process according to claim 25 , wherein the number of pulse for every threshold level is displayed and/or recorded.27. The process according to claim 25 , wherein the time during which an ...

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Номер записи: 19

21-11-2013 дата публикации

METHOD OF MONITORING THE POSITION OF A VALVE

Номер: US20130305825A1

Автор: Comparetto Joseph, Wilson Kenneth

Принадлежит:

A method of detecting a valve position includes imparting a vibration-inducing energy to a valve, detecting vibration of the valve and producing a sensor signal corresponding to the vibration of the valve, processing the sensor signal determining a measured response of the valve, and comparing the measured response to one or more predetermined characteristic frequencies for selected valve positions to determine the position of the valve. 1. A method of detecting a valve position comprising:imparting a vibration-inducing energy input to a valve;detecting vibration of the valve and producing a sensor signal corresponding to the vibration of the valve;processing the sensor signal determining a measured response of the valve;comparing the measured response to one or more predetermined characteristics for selected valve positions to determine the position of the valve.2. The method of detecting a valve position according to claim 1 , where the relationship between the sensor signal and the energy input is a transfer function dependent on the valve position.3. The method of detecting a valve position according to claim 1 , further comprising:providing a vibration sensor on the valve; and the step of detecting vibration comprising:measuring the vibration sensor signal corresponding to the vibration of the valve.4. The method of detecting a valve position according to claim 3 , where the step of processing the sensor signal comprises:processing the vibration sensor signal to convert the sensor signal from a function of time to a function of frequency.5. The method of detecting a valve position according to where the vibration sensor is selected from a group consisting of strain gauge claim 3 , accelerometer claim 3 , microphone claim 3 , voice coil claim 3 , and other sensor able to detect vibration.6. The method of detecting a valve position according to claim 1 , where the step of imparting a vibration-inducing energy comprises:generating a random white noise to provide ...

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Номер записи: 20

28-11-2013 дата публикации

Ultrasonic Spectroscopic Analysis-Based Inspection of Rail Components

Номер: US20130312524A1

Автор: Johnson William B., Mian Zahid F.

Принадлежит: INTERNATIONAL ELECTRONIC MACHINES CORPORATION

A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can induce specific vibrations into the wheel as it passes, and another set of devices which can acquire the resonance signals from the wheel. 1. A method for resonant ultrasonic analysis-based inspection of a rail component , the method comprising:inducing a spectrum of frequencies into an in-situ rail component;detecting and recording resonances produced by the induced frequencies as resonance data;determining a set of characteristics of resonant peaks within a frequency band of interest of the resonance data;comparing the set of characteristics with an expected resonance profile; anddetermining a condition of the rail component based on the comparing.2. The method of claim 1 , wherein the rail component is a railroad wheel.3. The method of claim 2 , further comprising selecting the spectrum of frequencies based on modeling of a set of characteristics of the railroad wheel.4. The method of claim 2 , further comprising selecting the spectrum of frequencies based on tests on a set of exemplar railroad wheels.5. The method of claim 1 , wherein the expected resonance profile is a sound-based parametric model using invariant feature sets representing a particular rail component or a particular type of rail component.6. The method of claim 1 , wherein the expected resonance profile is based on a set of known rail components.7. The method of claim 1 , wherein the expected resonance profile is based on a set of prior ...

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Номер записи: 21

28-11-2013 дата публикации

BATTERY MANAGEMENT SYSTEM WITH DISTRIBUTED WIRELESS SENSORS

Номер: US20130314094A1

Автор: Bandhauer Todd M., Farmer Joseph C.

Принадлежит: Lawrence Livermore National Security, LLC

A system for monitoring parameters of an energy storage system having a multiplicity of individual energy storage cells. A radio frequency identification and sensor unit is connected to each of the individual energy storage cells. The radio frequency identification and sensor unit operates to sense the parameter of each individual energy storage cell and provides radio frequency transmission of the parameters of each individual energy storage cell. A management system monitors the radio frequency transmissions from the radio frequency identification and sensor units for monitoring the parameters of the energy storage system. 1. An apparatus for monitoring parameters of an energy storage system , wherein the energy storage system includes a multiplicity of individual energy storage cells , comprising:a radio frequency identification and sensor unit connected to each of the individual energy storage cells, said radio frequency identification and sensor unit operating to sense the parameter of each individual energy storage cell and provide radio frequency transmission of the parameters of each individual energy storage cell, anda management system that monitors said radio frequency transmissions from said radio frequency identification and sensor units for monitoring the parameters of the energy storage system.2. The apparatus for monitoring parameters of an energy storage system of claim 1 , wherein the energy storage system is a capacitor bank that includes a multiplicity of individual capacitor cells and wherein said radio frequency identification and sensor unit connected to each of the individual energy storage cells comprises a radio frequency identification and sensor unit connected to each of the individual capacitor cells.3. The apparatus for monitoring parameters of an energy storage system of claim 1 , wherein the energy storage system is a battery pack that includes a multiplicity of individual battery cells and wherein said radio frequency identification ...

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Номер записи: 22

12-12-2013 дата публикации

Campbell diagram displays and methods and systems for implementing same

Номер: US20130328901A1

Автор: Charles T. HATCH, John Wesley Grant

Принадлежит: Individual

Methods and systems for creating Campbell diagram displays for illustrating vibration characteristics of a moving apparatus, such as a rotary machine, are provided. Data, representing vibration amplitudes and frequencies are recorded against rotational speeds of an apparatus. The data is used to create waveforms representing the forward and/or reverse vibration frequencies of the apparatus. The waveforms in turn are used to create spectral line envelopes to provide enhanced two dimensional images indicating the amplitudes of the vibrations of the apparatus at particular rotational speeds. The spectral line envelopes may be empty, filled with one or more colors, or other illustration features to impart solidity to the envelopes to enhance visibility.

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Номер записи: 23

09-01-2014 дата публикации

APPARATUS FOR ESTIMATING A RESONANT FREQUENCY OF A WIND TURBINE TOWER

Номер: US20140012516A1

Автор: Nielsen Rasmus

Принадлежит: KK-ELECTRONIC A/S

The invention regards an apparatus for estimating a resonant frequency of a wind turbine tower, comprising a measuring module adapted for measuring acceleration values of the wind turbine tower wherein the acceleration values represent acceleration of the wind turbine tower, a filter module adapted for receiving the measured acceleration values, the filter module comprises a variable filter wherein the variable filter is adapted to attenuate frequencies in a band hereby attenuating frequencies for an output of the filter module, an adaptive algorithm module comprising an adaptive algorithm wherein the adaptive algorithm module is adapted for communicating with the filter module and wherein the adaptive algorithm is adapted to minimise the energy of the output of the filter module by adjusting the band of attenuated frequencies, a resonant frequency estimating module adapted for estimating the resonant frequency of a wind turbine tower based on the attenuated frequencies. 1. Apparatus for estimating a resonant frequency of a wind turbine tower , comprisinga measuring module adapted for measuring acceleration values of the wind turbine tower wherein the acceleration values represent acceleration of the wind turbine tower,a filter module adapted for receiving the measured acceleration values, the filter module comprises a variable filter wherein the variable filter is adapted to attenuate frequencies in a band hereby attenuating frequencies for an output of the filter module,an adaptive algorithm module comprising an adaptive algorithm wherein the adaptive algorithm module is adapted for communicating with the filter module and wherein the adaptive algorithm is adapted to minimise the energy of the output of the filter module by adjusting the band of attenuated frequencies,a resonant frequency estimating module adapted for estimating the resonant frequency of a wind turbine tower based on the attenuated frequencies.2. Apparatus according to claim 1 , wherein ...

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Номер записи: 24

23-01-2014 дата публикации

Non-destructive evaluation methods for machine-riveted bearings

Номер: US20140020467A1

Автор: Anthony Restivo, Eric Bridges, Surendra Singh

Принадлежит: Honeywell International Inc

The disclosed embodiments generally relate to non-destructive evaluation methods. In an embodiment, a method for non-destructive evaluation of a machine-riveted bearing includes positioning a first plurality of sensors in the region of interest, the first plurality of acoustic sensors being provided in a phased array, positioning a second plurality of sensors in the region of interest, the second plurality of sensors being provided in a phased array, inducing a vibration in the region of interest using the first plurality of sensors and receiving a resonance frequency spectra using the second plurality of sensors, and comparing the received resonance frequency spectra against a reference spectra to determine the presence of an anomaly in the region of interest.

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Номер записи: 25

23-01-2014 дата публикации

TIGHTNESS MEASURING APPARATUS AND MEASURING METHOD

Номер: US20140020470A1

Автор: Kageyama Yasuaki, Nakasu Nobuaki, Onoda Mitsuru, SUZUKI Keiji, TSUCHIYA Harumasa, TSUTSUI Yoshitaka

Принадлежит: Hitachi, Ltd.

According to a method by a frequency analysis of tap tones at the time when a tightness of a ripple member fixed by an elastic force has been tapped by a hammer or a method of detecting a response at the time when the ripple member has been vibrated, an enough precision cannot be obtained for a tightness estimation. A tapping force is applied to a plurality of positions on the member surface, thereby allowing a plurality of tap tones to be generated. Feature amounts are obtained from the plurality of tap tones. An average feature amount is obtained by averaging the feature amounts. The tightness of the ripple member is estimated from the average feature amount by using a correlation between the tightness of the ripple member and the average feature amount. 1. A tightness measuring apparatus of a fixed member , comprising:tapping means for applying a controlled tapping force to a plurality of positions on a surface of the one member, thereby allowing tap tones to be generated;tone collecting means for collecting the plurality of generated tap tones; andarithmetic operating means for obtaining one feature amount from the plurality of collected tap tones by an arithmetic operation and obtaining a tightness corresponding to said feature amount by using a database showing a correlation between tightness of said member and a feature amount of the tap tone.2. A tightness measuring apparatus of a fixed member , comprising:tapping means for applying a predetermined controlled tapping force to a plurality of positions on a surface of the one member, thereby allowing a plurality of tap tones to be generated,tone collecting means for collecting the plurality of generated tap tones; andarithmetic operating means for obtaining a plurality of first feature amounts from the plurality of collected tap tones, obtaining one second feature amount from the plurality of first feature amounts by an arithmetic operation, and obtaining a tightness in correspondence to a tightness ...

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Номер записи: 26

23-01-2014 дата публикации

FILM CRACK DETECTING APPARATUS AND FILM FORMING APPARATUS

Номер: US20140020626A1

Автор: HASEBE Kazuhide, SUGAWARA Yudo

Принадлежит: TOKYO ELECTRON LIMITED

Provided is a film crack detecting apparatus capable of recognizing a possibility of occurrence of particles in real time by detecting film cracks of an unnecessary film adhered to a probe unit provided in a processing container. The film crack detecting apparatus is provided in a film forming apparatus, which includes a processing container configured to accommodate an object to be processed and forms a thin film on a surface of the object, to perform a film crack detection operation. The film crack detecting apparatus includes a probe unit installed within the processing container, an elastic wave detecting unit attached to an end of the probe unit to detect an elastic wave, and a determination unit configured to determine whether the maintenance of the processing container is necessary based on a detection result of the elastic wave detecting unit. 1. A film crack detecting apparatus provided in a thin film forming apparatus which includes a processing container configured to accommodate an object to be processed and forms a thin film on a surface of the object , the film crack detecting apparatus comprising:a probe unit provided within the processing container;an elastic wave detecting unit attached to an end of the probe unit and configured to detect an elastic wave; anda determination unit configured to determine whether a maintenance of the processing container is necessary based on a detection result of the elastic wave detecting unit.2. The film crack detecting apparatus of claim 1 , wherein the probe unit is provided along a height direction of the processing container.3. The film crack detecting apparatus of claim 1 , wherein the probe unit includes a probe body which is provided with a vertical probe portion having a lower end fixed to a lower end of the processing container and extending along a height direction of the processing container.4. The film crack detecting apparatus of claim 2 , wherein the probe body is provided with two vertical probe ...

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Номер записи: 27

30-01-2014 дата публикации

Acoustic Sensor II

Номер: US20140026665A1

Автор: Keady John

Принадлежит:

At least one exemplary embodiment is directed to an acoustic sensor that can be used to identify various fluids as well as concentrations of compounds dissolved in liquids. 1. An acoustic sensor comprising:a first device configured to emit a first acoustic signal within an emission frequency range;a first microphone configured to measure a first measurement signal; anda second microphone configured to measure a second measurement signal, where at least a first portion of the first acoustic signal passes through the medium, where the first measurement signal includes at least a second portion of the first acoustic signal, where the second measurement signal includes at least a third portion of the first acoustic signal, where the third portion of the first acoustic signal passes through at least a portion of the medium.2. The sensor according to claim 1 , further including:a processor; andcomputer readable memory, where the second and third portions are stored in the computer readable memory.3. The sensor according to claim 2 , where the processor is configured to compare the second and third portions against each other and compare the result to stored identification data claim 2 , where a match of the result with the stored identification data within a predetermined error produces an identification of the medium.4. The sensor according to where the result is the coherence between the second and third portions.5. The sensor according to claim 3 , where the result is the complex transfer function.6. The sensor according to claim 3 , where the result is the phase angle difference between the second and third portions.7. The sensor according to claim 4 , where the match occurs when the result compared to stored values within +/−0.1.8. The sensor according to claim 5 , where the match occurs when the result compared to stored values is within +/−0.1 dB.9. The sensor according to claim 6 , where the match occurs when the result compared to stored values is within +/−5 ...

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Номер записи: 28

06-02-2014 дата публикации

STRENGTH PROOF TEST METHOD AND DEVICE TO BE USED THEREIN

Номер: US20140033820A1

Автор: Ikeda Junji, Wakayama Shuichi

Принадлежит:

The present invention is intended for improving the reliability of a strength proof test method for ceramic parts. The present invention is directed to a strength proof test method for making total inspection of ceramic parts, including: applying a prescribed load to the ceramic parts; and at the same time, making an acoustic emission measurement, in which the ceramic parts are considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold. 1. A strength proof test method for making total inspection of ceramic parts before use , comprising:applying a prescribed load to the ceramic parts; andat the same time, making an acoustic emission measurement, in which the ceramic parts shall be considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold.2. The strength proof test method according to claim 1 , wherein the location of acoustic emission occurrence is identified using two or more acoustic emission sensors.3. The strength proof test method according to claim 1 , wherein the ceramic parts are analyzed for stress distribution state in actual use by the finite element method to determine a stress concentration region in the ceramic parts claim 1 , andthe ceramic parts shall be considered as passing when the ceramic parts are not fractured in the test and the acoustic emission energy occurring in the stress concentration region is not more than a threshold.4. The strength proof test method according to claim 1 , wherein the ceramic parts are in vivo implant members.5. The strength proof test method according to claim 4 , wherein the in vivo implant members are artificial joint components or dental implant members.6. The strength proof test method according to claim 5 , wherein the artificial joint components are ceramic femoral heads for artificial hip joint claim 5 , inlays for artificial hip ...

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Номер записи: 29

13-02-2014 дата публикации

PIEZOELECTRIC RESONATOR, ETCHING AMOUNT DETECTING DEVICE, AND OSCILLATOR

Номер: US20140041454A1

Автор: ISHIKAWA MANABU, KOYAMA Mitsuaki, MUTOH Takeru, Sato Shinichi

Принадлежит: NIHON DEMPA KOGYO CO., LTD.

A piezoelectric resonator includes a plate-shaped crystal element, excitation electrodes, and an unwanted response suppression portion. The excitation electrodes are disposed on both surfaces of the crystal element. The unwanted response suppression portion is formed by inverting a crystallographic axis of the crystal element to suppress an unwanted response that oscillates at a different frequency from a frequency of a main vibration of the crystal element. 1. A piezoelectric resonator , comprising:a plate-shaped crystal element;excitation electrodes disposed on both surfaces of the crystal element; andan unwanted response suppression portion formed by inverting a crystallographic axis of the crystal element to suppress an unwanted response that oscillates at a different frequency from a frequency of a main vibration of the crystal element.2. The piezoelectric resonator according to claim 1 , whereinthe unwanted response suppression portion is formed by inverting an X-axis, the X-axis being the crystallographic axis of the crystal element.3. The piezoelectric resonator according to claim 1 , whereina plurality of the unwanted response suppression portions are disposed symmetrically to the center of the excitation electrode.4. The piezoelectric resonator according to claim 3 , whereinthe excitation electrode is formed in a quadrangular shape, the quadrangular shape being one of a rectangular shape and a square shape where lengths of four sides are equal to one another, a first unwanted response suppression portion and a second unwanted response suppression portion disposed on one diagonal line of the quadrangular shape that is an outline of the excitation electrode, the first and second unwanted response suppression portions being symmetrical to each other with respect to a center of gravity of the quadrangular shape; and', 'a third unwanted response suppression portion and a fourth unwanted response suppression portion disposed on another diagonal line of the ...

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Номер записи: 30

13-02-2014 дата публикации

4c slip-shooting method and device

Номер: US20140041455A1

Автор: Julien CLOUD

Принадлежит: CGG SERVICES SAS

During a marine seismic survey, shots are fired at a time interval shorter than an S-wave listening time during which seismic receivers within a predetermined distance from the shot location detect reflected S-waves caused by an earlier shot. In portion of data acquired during the survey, information related to the S-wave reflections caused by the earlier shot is blended with information related to P-wave and S-wave reflections from a later shot.

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Номер записи: 31

27-02-2014 дата публикации

MONITORING UNIT AND METHOD FOR DETECTING STRUCTURAL DEFECTS WHICH CAN OCCUR IN AN AIRCRAFT NACELLE DURING USE

Номер: US20140053649A1

Автор: Maalioune Hakim

Принадлежит: AIRCELLE

The present disclosure relates to a monitoring assembly for detecting structural detects. The monitoring assembly includes a composite sandwich structure with two distinct strata, a calculation unit and a plurality of sensors for generating signals representative of an amplitude or frequency of vibrations produced in a structure. Each sensor is formed by an electromechanical microsystem including a converter for converting mechanical energy into electrical energy. In particular, the calculation unit evaluates differences between a current transfer function resulting from the signals and a predetermined nominal transfer function, compares each of the differences with a respective detection threshold, and evaluates a size or a position of the structural defect in the structure. 1. A monitoring assembly for detecting structural defects that may appear in an aircraft nacelle in service , the monitoring assembly comprising:at least one composite material sandwich structure with at least two distinct strata, the composite material sandwich structure being adapted for forming at least one part of the aircraft nacelle; anda plurality of sensors arranged so as to generate signals representative at least one of an amplitude and a frequency of vibrations produced in the composite material sandwich structure when the aircraft nacelle is in service, each sensor for emitting said signals by electromagnetic waves, wherein each sensor is formed by an electromechanical microsystem (MEMS) comprising means for converting mechanical energy into electrical energy; and for evaluating the differences existing between a current transfer function resulting from said signals and a predetermined nominal transfer function;', 'for effecting a comparison between each of said differences and a respective detection threshold (HD); and', 'on the basis of said comparison, for estimating or evaluating a size and/or a position of said structural defect in the composite material sandwich structure., ' ...

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Номер записи: 32

06-03-2014 дата публикации

Ultrasonic Spectroscopic Analysis-Based Inspection of Rail Components

Номер: US20140060190A1

Автор: Johnson William B., Mian Zahid F.

Принадлежит: INTERNATIONAL ELECTRONIC MACHINES CORPORATION

A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can acquire the resonance signals from the wheel. 1. A method for resonant ultrasonic analysis-based inspection of a rail component , the method comprising:detecting and recording resonances produced by vibrations of a spectrum of frequencies in an in-situ rail component as resonance data;determining a set of characteristics of resonant peaks within a frequency band of interest of the resonance data;comparing the set of characteristics with an expected resonance profile; anddetermining a condition of the rail component based on the comparing.2. The method of claim 1 , wherein the rail component is a railroad wheel.3. The method of claim 2 , further comprising selecting the spectrum of frequencies based on modeling of a set of characteristics of the railroad wheel.4. The method of claim 2 , further comprising selecting the spectrum of frequencies based on tests on a set of exemplar railroad wheels.5. The method of claim 1 , wherein the expected resonance profile is a sound-based parametric model using invariant feature sets representing a particular rail component or a particular type of rail component.6. The method of claim 1 , wherein the expected resonance profile is based on a set of known rail components.7. The method of claim 1 , wherein the expected resonance profile is based on a set of prior inspections performed on the rail component.8. The method of claim 7 , further comprising refining the expected ...

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Номер записи: 33

20-03-2014 дата публикации

Testing for defective manufacturing of microphones and ultralow pressure sensors

Номер: US20140076052A1

Автор: Andrew J. Doller, Michael J. Daley

Принадлежит: ROBERT BOSCH GMBH

A method of testing a MEMS pressure sensor device such as, for example, a MEMS microphone package. The MEMS pressure sensor device includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source is activated and acoustic pressure from the acoustic pressure source is directed to the pressure input port and to an exterior location of the housing other than the pressure input port. Based on the output signal of the pressure sensor, it is determined whether any defects exist that allow acoustic pressure to reach the pressure sensor through the exterior of the housing at locations other than the pressure input port.

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Номер записи: 34

27-03-2014 дата публикации

Acoustic wave (aw) sensing devices using live cells

Номер: US20140087451A1

Автор: Abiche H. Dewilde, Gang Wang, Hongwei Sun, Jianping Zhang, Joel M. Therrien, Kenneth A. Marx, Lian Dai, Malavika Vashist, Sai Liu, Susan J. Braunhut

Принадлежит: University of Massachusetts UMass

In one embodiment according to the invention, there is provided a method of sensing a response of a living cell or virus to a change in conditions. The method comprises applying an essentially constant external electromotive force that causes oscillation of an acoustic wave device at essentially constant amplitude and frequency under steady state conditions. The acoustic wave device has attached at least one living cell or virus. A combined oscillating system including the acoustic wave device and the living cell or virus exhibits a fundamental frequency and at least one harmonic frequency of the combined oscillating system. The living cell or virus is exposed to a change in an environmental condition while oscillating the combined oscillating system under the essentially constant external electromotive force, whereby a response of the living cell or virus to the change in environmental condition will be indicated by a change in at least one of frequency and amplitude of the oscillation of at least one harmonic frequency of the combined oscillating system.

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Номер записи: 35

01-01-2015 дата публикации

METHOD FOR DETERMINING MECHANICAL DAMAGE TO A ROTOR BLADE OF A WIND TURBINE

Номер: US20150000404A1

Автор: Brenner Daniel, Schollbach Dirk

Принадлежит: ROBERT BOSCH GMBH

A method for detecting mechanical damage to a rotor blade of a wind turbine includes measuring vibrations of the rotor blade and generating a frequency-dependent vibration signal. A value of the signal energy over a predetermined frequency range of the vibration signal is determined at each of a number of measuring times and the respectively determined signal energy values are evaluated with respect to time in order to detect mechanical damage. 1. A method for identifying mechanical damage to a rotor blade of a wind turbine , comprising:sensing vibrations of the rotor blade;generating a frequency-dependent vibration signal;determining in each case a signal energy measure, over a predefined frequency range of the vibration signal, at a number of measurement instants; and evaluating the respectively determined signal energy measures with respect to time, so as to identify mechanical damage.2. The method as claimed in claim 1 , wherein the predefined frequency range has a width of at least 50 Hz claim 1 , 100 Hz claim 1 , 250 Hz claim 1 , or 500 Hz.3. The method as claimed in claim 1 , wherein the predefined frequency range includes frequencies above 50 Hz.4. The method as claimed in claim 1 , wherein the predefined frequency range includes frequencies below 1000 Hz.5. The method as claimed in claim 1 , wherein a frequency range of approximately 150 to approximately 350 Hz claim 1 , 500 Hz claim 1 , or 1000 Hz is used as a predefined frequency range.6. The method as claimed in claim 1 , wherein the signal energy measure is determined on the basis of a mean signal energy in the frequency range.7. The method as claimed in claim 1 , wherein the evaluation in respect of time comprises comparing the signal energy measure of a rotor blade with a corresponding signal energy measure of another rotor blade of the same wind turbine claim 1 , and wherein mechanical damage is identified if a difference between the time characteristics of the two signal energy measures exceeds a ...

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Номер записи: 36

06-01-2022 дата публикации

APPARATUS, METHOD AND COMPUTER PROGRAM FOR DETECTING DEFECTS

Номер: US20220003720A1

Автор: CATTON Phil, LAU Wai, WRIGHT Christopher

Принадлежит:

According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for: controlling one or more electroacoustic transducers of a device to create a standing wave having a displacement antinode at an expected location of a component of the device; receiving a signal representing sound generated by vibration of the component driven by the standing wave; causing analysis of the signal to determine whether there is a defect based on whether the signal represents a sound that would be expected to result from vibration of the component driven by the standing wave in the absence of a defect. 1. An apparatus comprising:at least one processor; andat least one memory including computer program code;the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:control one or more electroacoustic transducers of a device to create a standing wave having a displacement antinode at an expected location of a component of the device;receive a signal representing sound generated by vibration of the component driven by the standing wave;cause analysis of the signal to determine whether there is a defect based on whether the signal represents a sound that would be expected to result from vibration of the component driven by the standing wave in the absence of a defect.2. The apparatus of wherein the at least one memory and the computer program code are configured to claim 1 , with the at least one processor claim 1 , cause the apparatus to:control the one or more electroacoustic transducers to cause a change in the position of the displacement antinode in response to a trigger event.3. The apparatus of wherein the at least one memory and the computer program code are configured to claim 1 , with the at least one processor claim 1 , cause the apparatus to:control the one or more electroacoustic transducers to cause a position of the displacement antinode to traverse at least one ...

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Номер записи: 37

05-01-2017 дата публикации

Integrated Vibration Measurement and Analysis System

Номер: US20170003163A1

Автор: Joseph C. Baldwin

Принадлежит: Computational Systems Inc

A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.

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Номер записи: 38

05-01-2017 дата публикации

Touch detection device used in water handling equipment, and faucet apparatus including the same

Номер: US20170003253A1

Автор: Yoshiyuki Kaneko

Принадлежит: TOTO LTD

A touch detection device capable of operation by a light touch, and of preventing false operations even when used in water handling equipment includes a sensing portion for sensing contact by a target object; a vibration excitation element attached to this sensing portion, a drive circuit for exciting vibration in the sensing portion, and a contact determining circuit for determining whether a target object is contacting a sensing portion based on vibration of the sensing portion after stopping the application of an AC voltage to the vibration excitation element by this drive circuit.

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Номер записи: 39

04-01-2018 дата публикации

AUTOMATIC TRANSDUCER OPERATING PARAMETER SELECTION

Номер: US20180003680A1

Автор: Bondurant Phillip D., KANNAJOSYULA Haraprasad

Принадлежит: QI2 Elements, LLC

Operating parameters are selected for inspecting a structure. Selecting the operating parameters includes exciting broadband ultrasonic guided waves in a multilayered structure, acquiring data corresponding to the sensed broadband ultrasonic guided waves in the multilayered structure, selecting one or more narrow frequency bands based on the acquired data, and inspecting the multilayered structure using ultrasonic guided waves in the one or more narrow frequency bands. In some examples, the data is acquired by an inspection tool capable of sensing the broadband ultrasonic guided waves in the multilayered structure. 1. A method of selecting operating parameters for inspecting a structure , the method comprising:exciting broadband ultrasonic guided waves in a multilayered structure;acquiring, by an inspection tool capable of sensing the broadband ultrasonic guided waves in the multilayered structure, data corresponding to the sensed broadband ultrasonic guided waves in the multilayered structure;selecting one or more narrow frequency bands based on the acquired data; andinspecting the multilayered structure using ultrasonic guided waves in the one or more narrow frequency bands.2. The method of claim 1 , wherein the multilayered structure comprises a coated metallic pipe having one or more of a varying wall thickness claim 1 , a varying coating thickness claim 1 , or a varying quality.3. The method of claim 1 , wherein the inspection tool is an electromagnetic acoustic transducer based inline inspection tool.4. The method of claim 1 , wherein the one or more narrow frequency bands comprise a long pulse width with a plurality of cycles.5. The method of claim 1 , wherein the ultrasonic guided waves in the one or more narrow frequency bands have a higher intensity than the broadband ultrasonic guided waves.6. A system of selecting operating parameters for inspecting a structure claim 1 , the system comprising:an ultrasonic transmitter configured to excite broadband ...

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Номер записи: 40

02-01-2020 дата публикации

BANDWIDTH-SELECTABLE ACOUSTIC EMISSION APPARATUS AND METHODS FOR TRANSMITTING TIME-AVERAGED SIGNAL DATA

Номер: US20200003732A1

Автор: Dahme Bret Anthony

Принадлежит:

Bandwidth-selectable acoustic emission apparatus and methods for transmitting time-averaged signal data are described. An example apparatus includes an integrated external preamplifier device having a bandwidth-selectable analog filter and a data extractor. The integrated external preamplifier device is to receive an analog acoustic emission signal generated via an acoustic emission sensor operatively coupled to the integrated external preamplifier device. The bandwidth-selectable analog filter is to filter the analog acoustic emission signal based on a software-programmed bandwidth to generate a filtered analog acoustic emission signal. The data extractor is to extract a time-averaged analog signal from the filtered analog acoustic emission signal, and to transmit the time-averaged analog signal from the integrated external preamplifier device to an external data acquisition system. 1. An apparatus , comprising:an integrated external preamplifier device including a bandwidth-selectable analog filter and a data extractor, the integrated external preamplifier device to receive an analog acoustic emission signal generated via an acoustic emission sensor operatively coupled to the integrated external preamplifier device, the bandwidth-selectable analog filter to filter the analog acoustic emission signal based on a software-programmed bandwidth to generate a filtered analog acoustic emission signal, the data extractor to extract a time-averaged analog signal from the filtered analog acoustic emission signal, the data extractor to transmit the time-averaged analog signal from the integrated external preamplifier device to an external data acquisition system.2. The apparatus of claim 1 , where the integrated external preamplifier device further includes a preamplifier claim 1 , the bandwidth-selectable analog filter being integrated within the preamplifier.3. The apparatus of claim 1 , wherein the integrated external preamplifier device further includes a preamplifier to ...

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Номер записи: 41

02-01-2020 дата публикации

Method for Early Damage Recognition, and Program and Control Unit for Executing the Method

Номер: US20200003736A1

Автор: Bittner Ulrich, Eichner Wilfried

Принадлежит:

A method for early damage recognition, and program and control unit for executing the method are disclosed. A method is disclosed for early damage recognition, wherein a frequency-transformed signal, filtered of dominant excitations, is supplied to a comparative early damage recognition. 1. A method for early damage recognition of a machine , the method comprising:detecting at least one oscillation signal of the machine;transforming, after the detecting, the at least one oscillation signal from a time range into an image range;filtering, after the transforming, the at least one oscillation signal to reduce, at least in absolute value, at least one dominant excitation, the at least one dominant excitation being determined according to at least one operating variable; andrecognizing, after the filtering, damage of the machine by comparing at least one signal value of the at least one oscillation signal to a comparison value.2. The method according to claim 1 , wherein the at least one oscillation signal of the machine is at least one of a pivot angle claim 1 , a fluid-borne sound claim 1 , an airborne sound claim 1 , a structure-borne sound claim 1 , and a combination thereof.3. The method according to claim 1 , the transforming further comprising:integrally transforming the at least one oscillation signal.4. The method according to further comprising:detecting, before the filtering, the at least one operating variable, the detecting of at least one operating variable being performed one of (i) once, (ii) irregularly, (iii) periodically, and (iv) continuously.5. The method according to further comprising:scaling, after the transforming, a spectrum into an order spectrum based on the at least one dominant excitation.6. The method according to further comprising:further filtering the at least one oscillation signal,wherein the further filtering is at least one of (i) after the filtering, (ii) integrated into the filtering, (iii) before the filtering, (iv) before the ...

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Номер записи: 42

07-01-2021 дата публикации

INSPECTION DEVICE FOR DETERMINING INSERTION OF CONNECTOR, AND ROBOT DEVICE HAVING INSPECTION DEVICE

Номер: US20210003535A1

Автор: FURUYA Yoshitake, MINE Takahide

Принадлежит:

An inspection device includes an oscillator for generating ultrasonic waves toward a first connector, and a vibration receiver for receiving vibrations generated in the first connector. The inspection device includes a vibration controller for analyzing the vibrations received by the vibration receiver. The vibration controller detects a resonance frequency by converting, by Fourier transform, the vibrations received by the vibration receiver. The vibration controller determines an insertion amount of the first connector into the second connector, based on the detected resonance frequency. 1. An inspection device for inspecting a state in which a first connector having a shape to be fitted to a second connector is inserted into the second connector , comprising:an oscillator for generating ultrasonic waves toward the first connector;a vibration receiver for receiving vibrations generated in the first connector; anda vibration controller for driving the oscillator and analyzing the vibrations received by the vibration receiver, whereinthe vibration controller detects a resonance frequency by converting, by Fourier transform, the vibrations received by the vibration receiver, and determines, based on the detected resonance frequency, an insertion amount of the first connector into the second connector.2. The inspection device according to claim 1 , wherein a determination range when the first connector is inserted into the second connector by an appropriate insertion amount is previously determined claim 1 , andthe vibration controller determines that the insertion amount of the first connector is small when the detected resonance frequency is lower than the determination range.3. The inspection device according to claim 1 , wherein the vibration controller controls the oscillator so that the oscillator generates ultrasonic waves while continuously changing the frequency.4. The inspection device according to claim 1 , comprising an operation tool including the ...

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Номер записи: 43

03-01-2019 дата публикации

APPARATUS, SYSTEMS, AND METHODS FOR DETERMINING NONLINEAR PROPERTIES OF A MATERIAL TO DETECT EARLY FATIGUE OR DAMAGE

Номер: US20190004014A1

Автор: BUNGET Gheorghe, FARINHOLT Kevin, WEBSTER Matthew Ryan

Принадлежит:

An inspection apparatus detects one or more characteristics of a material sample and includes a transmitter to transmit an initial signal to the material sample, and a receiver to receive a detected signal from the material sample associated with the initial signal. The detected signal has at least a first harmonic signal component and a second harmonic signal component. Data processing circuitry determines a resonant frequency of the first harmonic signal component and an amplitude of the first harmonic signal component at the resonant frequency, and filters the detected signal using a first filter signal having a frequency corresponding to the first harmonic signal component and a second filter signal having a frequency corresponding to the second harmonic signal component. A frequency analysis is performed in the frequency domain on the filtered first and second signals to determine corresponding first and second amplitudes. The first and second amplitudes may be compensated for nonlinearity. One or more nonlinear parameters are determined based on the first and second amplitudes. A user interface communicates one or more characteristics of the material sample based on the first and second compensated amplitudes. 1. An inspection apparatus for detecting one or more characteristics of a material sample , comprising:a transmitter to transmit an initial signal to the material sample;a receiver to receive a detected signal from the material sample associated with the initial signal, the detected signal having at least a first harmonic signal component and a second harmonic signal component; determine a resonant frequency of the first harmonic signal component and an amplitude of the first harmonic signal component at the resonant frequency;', 'filter the detected signal using a first filter signal having a frequency corresponding to the first harmonic signal to generate a filtered first detected signal;', 'filter the detected signal using a second filter signal ...

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Номер записи: 44

03-01-2019 дата публикации

METHOD FOR OBTAINING DATA RELATING TO THE ELASTICITY OF MATERIALS, USING TORSIONAL WAVES

Номер: US20190004015A1

Автор: MASSÓ GUIJARRO Paloma, MELCHOR RODRIGUEZ Juan Manuel, RUS CALBORG Guillermo

Принадлежит:

The invention relates to a method or operating mode which, using a device for emitting and receiving sonic and/or ultrasonic torsional waves, can be used to obtain data relating to the consistency or elasticity of quasi-incompressible solid media, preferably quasi-fluids or biological tissues, based on the separation of non-linear parameters. 1. Method for obtaining data relating to the elasticity of materials using torsional waves comprising the following steps of:emitting a sonic or ultrasonic torsional wave train on a specimen;selecting a time window of the received wave, originating from reflection on the specimen;calculating the Fourier transform of the wave function determined by the foregoing selection of time window;extracting the amplitudes from the fundamental harmonics, a, and from at least one of the harmonics of the second order, b, or higher;calculating one or more non-linearity parameters based on the extracted amplitudes of the harmonics.2. Method according to the preceding claim , characterized in that the emitted wave train consists of between 2 and 80 cycles , preferably between 3 and 10 cycles.3. Method according to any of the preceding claims , characterized in that the emitted torsional waves have a signal magnitude greater than 2 mV , more preferably greater than or equal to 5 mV.4. Method according to any of the preceding claims , characterized in that the excitation energy used for generating the wave train , in terms of the maximum amplitude of the preceding sinusoidal wave , is comprised between 0.1 V and 20 V , preferably between 2 and 10 V.5. Method according to any of the preceding claims , characterized in that the sinusoidal excitation frequency is in the range between 100 Hz and 100 kHz , preferably between 500 Hz and 5 kHz.6. Method according to any of the preceding claims , characterized in that the time window commences at the moment after the commencement of the received wave cycles and is associated with a number of cycles ...

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Номер записи: 45

01-01-2015 дата публикации

System and method for filtering noise from acoustic energy from a valve

Номер: US20150006091A1

Автор: Larry Gene Schoonover

Принадлежит: Dresser LLC

Embodiments of systems and methods that can filter acoustic energy from sources remote from the valve. These embodiments utilize signals from sensors that manifest acoustic energy from various locations on and/or about the valves. In one embodiment, the system includes sensors at locations proximate the valve and locations spaced apart from the valve. The system can further process the signals from these locations and, in one example, combines samples of data to form an energy signature of the valve that is effectively free of noise that emanates from upstream and/or downstream of the valve.

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Номер записи: 46

03-01-2019 дата публикации

Test Wafer With Optical Fiber With Bragg Grating Sensors

Номер: US20190006157A1

Автор: "OBanion William J.", Nguyen An-Dien, Nguyen Huy D.

Принадлежит:

An apparatuses relating generally to a test wafer, processing chambers, and method relating generally to monitoring or calibrating a processing chamber, are described. In one such an apparatus for a test wafer, there is a platform. An optical fiber with Fiber Bragg Grating sensors is located over the platform. A layer of material is located over the platform and over the optical fiber. 1. An apparatus for a test wafer , comprising:a platform;an optical fiber with Fiber Bragg Grating sensors located over the platform; anda layer of material located over the platform and over the optical fiber.2. The apparatus according to claim 1 , wherein the Fiber Bragg Grating sensors are each configured for a different center frequency for modulation thereof responsive to at least temperature.3. The apparatus according to claim 2 , wherein the Fiber Bragg Grating sensors are configured to filter wavelengths in a range of 1500 to 1600 nanometers.4. The apparatus according to claim 2 , wherein the optical fiber includes 50 or more of the Fiber Bragg Grating sensors.5. The apparatus according to claim 2 , further comprising a sealant disposed between the platform and the layer of material.6. The apparatus according to claim 2 , wherein the optical fiber between the platform and the layer of material includes disposition in a spiral or spiral-like pattern.7. The apparatus according to claim 2 , wherein an end of the optical fiber is positioned for communication with an optical lift pin.8. The apparatus according to claim 2 , further comprising:an optical eye coupled to an end of the optical fiber for optical communication to and from a light source-based detection system for a single-port and a single interface for receiving a source spectrum and transmitting a reflected spectrum.9. The apparatus according to claim 2 , wherein an end of the optical fiber is configured with a lens for optical communication to and from a light source-based detection system for a single-port and a ...

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Номер записи: 47

04-01-2018 дата публикации

BI-MAGNITUDE PROCESSING FRAMEWORK FOR NONLINEAR ECHO CANCELLATION IN MOBILE DEVICES

Номер: US20180007482A1

Автор: Huang Yiteng, Luebs Alejandro, Skoglund Jan

Принадлежит:

Techniques of performing acoustic echo cancellation involve providing a bi-magnitude filtering operation that performs a first filtering operation when a magnitude of an incoming audio signal to be output from a loudspeaker is less than a specified threshold and a second filtering operation when the magnitude of the incoming audio signal is greater than the threshold. The first filtering operation may take the form of a convolution between the incoming audio signal and a first impulse response function. The second filtering operation may take the form of a convolution between a nonlinear function of the incoming audio signal and a second impulse response function. For such a convolution, the bi-magnitude filtering operation involves providing, as the incoming audio signal, samples of the incoming audio signal over a specified window of time. The first and second impulse response functions may be determined from an input signal input into a microphone. 1. A method , comprising:receiving, by processing circuitry configured to reduce acoustic echo in an audio system including a loudspeaker and a microphone, at the loudspeaker of the audio system, an audio signal from a source location remote from the audio system;performing, by the processing circuitry, a comparison operation on a magnitude of the audio signal and a threshold magnitude to produce a comparison result; performing, by the processing circuitry, a first filtering operation on an input signal into the microphone of the audio system to produce a first filtered input signal; and', 'transmitting, by the processing circuitry, the first filtered input signal to the source location;, 'in response to the comparison result indicating that the magnitude of the audio signal is less than the threshold magnitude performing, by the processing circuitry, a second filtering operation on the input signal into the microphone of the audio system to produce a second filtered input signal, the second filtered input signal being ...

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Номер записи: 48

27-01-2022 дата публикации

METHOD FOR MONITORING THE QUALITY OF ULTRASONIC WELDING

Номер: US20220023978A1

Автор: Herzing Thomas, Klimas Felix, LEHMANN Lutz, Zemann Daniel

Принадлежит: Lisa Draexlmaier GmbH

A method for monitoring the quality of an ultrasonic weld includes monitoring a vibration behavior during a joining process with respect to an actual value of a vibration frequency and/or a vibration amplitude of at least one joining partner of joining partners involved in the joining process. A tool of an ultrasonic welding device is used in the joining process, and at least one measuring device is configured to quantify mechanical vibrations. The detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined set value as reference value. 1. A method for monitoring quality of an ultrasonic weld , the method comprising: at least one of a vibration frequency and a vibration amplitude of at least one joining partner of joining partners involved in the joining process; and', 'at least one of a vibration frequency and a vibration amplitude of a tool of an ultrasonic welding device used in the joining process,, 'monitoring a vibration behavior during a joining process with respect to an actual value of at least one ofby measuring with at least one measuring device configured to quantify mechanical vibrations,wherein a detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined target value as a reference value.2. The method according to claim 1 , wherein an optical measurement device is used to quantify the mechanical vibrations during the joining process.3. The method according to claim 1 , wherein at least one of an eddy current sensor and a laser vibrometer is used to quantify the mechanical vibrations during the joining process.4. The method according to claim 1 , wherein a plurality of measurement points are monitored by the at least one measuring device with regard to vibration behavior of the measurement points differing from respective target values.5. The method according to claim 4 , wherein one measurement point on at least one of a sonotrode claim 4 , an anvil claim 4 , a first joining partner ...

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Номер записи: 49

27-01-2022 дата публикации

METHOD FOR NON-DESTRUCTIVELY TESTING A QUALITY OF AN ULTRASONIC WELD

Номер: US20220023979A1

Автор: Herzing Thomas, Klimas Felix, LEHMANN Lutz, Zemann Daniel

Принадлежит: Lisa Draexlmaier GmbH

A method for non-destructive testing of a quality of an ultrasonic weld from a welding process includes detecting of a time-dependent measurement value over a period of time, where the measurement value is characteristic of a mechanical or electrical vibration behavior of a welding process to be tested. The method includes evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis. The method further includes comparing a result of the evaluation to a reference value in order to test the quality of the weld. A measuring device and an ultrasonic welding system are also included. 1. A method for non-destructive testing of a quality of an ultrasonic weld from a welding process , the method comprising:detecting a time-dependent measurement value over a period of time, wherein the time-dependent measurement value is characteristic of a mechanical or electrical vibration behavior of the welding process;evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis; andcomparing a result of the evaluation to a reference value in order to test the quality of the ultrasonic weld.2. The method according to claim 1 , wherein the period of time corresponds to a duration of the welding process.3. The method according claim 1 , wherein the time-dependent measurement value is characteristic of a mechanical vibration behavior of the welding process claim 1 , the mechanical vibration behavior comprising a shear force and a deflection of a sonotrode.4. The method according to claim 1 , wherein the time-dependent measurement value is characteristic of an electrical vibration behavior of the welding process claim 1 , the electrical vibration behavior comprising at least one of an electrical current and an electrical voltage for controlling a piezo actuator.5. The method according to claim 1 , wherein the detecting of the time-dependent measurement value comprises detecting a ...

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Номер записи: 50

27-01-2022 дата публикации

ULTRASONIC TESTING WITH SINGLE SHOT PROCESSING

Номер: US20220026201A1

Автор: Thomas Andrew

Принадлежит:

Examples of the present subject matter provide techniques for measuring thicknesses of materials using one or more acquisition cycles. The data from the one or more acquisition cycles may be amplified using a specified gain across the signal response, converted to a digital signal, and stored in a memory. The digital signal may be retrieved from memory, and signal processing techniques using one or more time variable threshold(s) may be used to calculate one or more thickness(es) of the testing object. 1. A method comprising:in response to a transmitted ultrasound signal into a test object, acquiring from a transducer probe a signal response in one or more acquisition cycles, the signal response including an electrical representation of one or more echoes received from the test object;applying a gain profile across the signal response to generate an amplified signal response;digitizing the amplified signal response to generate a digitized signal response; andcalculating from the digitized signal response one or more thicknesses of the test object using at least one time-variable threshold based on one or more associated threshold crossing events.2. The method of claim 1 , wherein the signal response is acquired in a single acquisition cycle and. wherein digitizing the amplified signal response includes performing a plurality of analog-to-digital conversions using one or more conversion circuits and blending outputs from the one or more conversion circuits corresponding to the plurality of analog-to-digital conversions to generate the digitized signal response.3. The method of claim 1 , wherein a plurality of signal responses are acquired in a plurality of acquisition cycles and wherein digitizing the amplified signal response includes performing a plurality of analog-to-digital conversions using one or more conversion circuits and time interleaving outputs from the one or more conversion circuits corresponding to the plurality of analog-to-digital conversions to ...

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Номер записи: 51

14-01-2016 дата публикации

MULTICHANNEL IMPACT RESPONSE FOR MATERIAL CHARACTERIZATION

Номер: US20160011088A1

Автор: GUTHRIE William S., LARSEN Jacob, MAZZEO Brian, MCELDERRY Joseph

Принадлежит:

A non-destructive test system includes a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob, a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices, and a microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material. 1. A non-destructive test system comprising:a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob;a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices; anda microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material.2. The non-destructive test system of claim 1 , further comprising an encoder configured to generate a signal based on a bounce of the knob off the surface after impact on the surface.3. The non-destructive test system of claim 1 , whereinthe plurality of impact devices are attached to a trailer configured to traverse the surface,the plurality of impact devices are communicatively coupled to each other using an Ethernet protocol, andthe plurality of impact devices are communicatively coupled to the controller using the Ethernet protocol, each of the plurality of impact devices having a different address.4. The non-destructive test system of claim 1 , wherein the controller is further configured to determine a characteristic at a location associated with the impact of ...

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Номер записи: 52

14-01-2016 дата публикации

ECHOLOCATION DATA GENERATION

Номер: US20160011498A1

Автор: Ji Ting-Lan, McLaughlin Glen W., Napolitano David

Принадлежит:

Methods of probing a material under investigation using an ultrasound beam. Echolocation data is generated using a multi-dimensional transform capable of using phase and magnitude information to distinguish echoes resulting from ultrasound beam components produced using different ultrasound transducers. Since the multi-dimensional transform does not depend on using receive or transmit beam lines, a multi-dimensional area can be imaged using a single ultrasound transmission. In some embodiments, this ability increases image frame rate and reduces the amount of ultrasound energy required to generate an image. 1generating first data by converting echoes into electronic signals, the first data having a plurality of values associable with time; andgenerating the echolocation data using the first data and a data transform responsive to a phase or magnitude information.. A method of generating echolocation data comprising the steps of: This application is a continuation and claims the priority benefit of U.S. patent application Ser. No. 12/684,086 titled “Echolocation Data Generation,” filed Jan. 7, 2010, which is a divisional and claims the priority benefit of U.S. patent application Ser. No. 11/592,702 titled “Broad-Beam Imaging,” filed Nov. 3, 2006, which is a continuation and claims the priority benefit of U.S. patent application Ser. No. 10/759,558 entitled “Broad Beam Imaging Methods,” filed Jan. 16, 2004, which is a continuation and claims the priority benefit of U.S. patent application Ser. No. 10/211,391 entitled “Broad-Beam Imaging,” filed Aug. 1, 2002, which claims the priority benefit of U.S. provisional patent application No. 60/370,632 entitled “Broad-Beam Imaging,” filed Apr. 5, 2002; U.S. patent application Ser. No. 10/211,391 is also a continuation-in-part and claims the priority benefit of U.S. patent application Ser. No. 10/039,922 entitled “Block Switching in Ultrasound Imaging,” filed Oct. 20, 2001; U.S. patent application Ser. No. 10/211,391 is also a ...

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Номер записи: 53

14-01-2021 дата публикации

INLINE CYCLE FUSE

Номер: US20210010979A1

Автор: Eihusen John

Принадлежит:

A system and method of predicting impending failure of a pressure vessel include a pressure vessel, a fluid source, a line coupled to the pressure vessel and to the fluid source, an apparatus, a sensor and a controller. The apparatus includes a conduit and a containment structure. The containment structure includes a cavity separated from an interior of the conduit by a portion of a conduit wall of the conduit. The sensor is configured to determine a value of a physical property in the cavity. The controller is in signal communication with the sensor and configured to detect a change in the value. The method includes determining a first value of a physical property in the cavity, experiencing a failure of the conduit wall, determining a second value of the physical property in the cavity, and detecting a difference between the first and second values. 2. The system of comprising:a containment structure including a cavity separated from the interior of the conduit by the portion of the conduit wall; anda sensor configured to determine a value of a physical property in the cavity, wherein the physical property is selected from the group consisting of pressure, temperature, acoustic emission, conductivity, resistance, capacitance, optical, and substance concentration.3. The system of claim 2 , comprising:a controller in signal communication with the sensor and configured to detect a change in the value; andan indicator in signal communication with the controller.4. The system of further including a valve disposed between the fluid source and the pressure vessel.5. The system of claim 4 , wherein the valve is in signal communication with a controller.6. The system of herein the weakness is a discrete structure located on the portion of the conduit wall.7. A method of predicting impending failure of a pressure vessel claim 1 , the method including:fluidly connecting the pressure vessel to a source of pressurized fluid via a line so that pressurized fluid flows through ...

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Номер записи: 54

14-01-2021 дата публикации

SYSTEM IDENTIFICATION DEVICE, SYSTEM IDENTIFICATION METHOD, AND RECORDING MEDIUM

Номер: US20210010980A1

Автор: Inoue Hirofumi, Kikuchi Katsumi, Shinoda Shigeki, Takata Soichiro

Принадлежит: NEC Corporation

A system identification device includes an analysis unit that calculates a self-frequency response function on the basis of an input signal and an output signal measured by a measurement unit at a position where a subject physical system has been excited by a vibrating unit . The analysis unit performs system identification of the subject physical system by using an impulse response function obtained from the calculated self-frequency response function and an impulse response function of a virtual two-degrees-of-freedom model modeling the subject physical system that is the subject of analysis. This makes it possible to perform system identification of systems with close eigenvalues.

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Номер записи: 55

10-01-2019 дата публикации

INSPECTION DEVICE, INSPECTION METHOD, AND NON-TRANSITORY RECODING MEDIUM STORING INSPECTION PROGRAM

Номер: US20190011402A1

Автор: Kasai Shigeru, KINOSHITA Shohei

Принадлежит: NEC Corporation

Provided are an inspection device and the like capable of correctly determining a state of an inspection target without destroying the inspection target. An inspection device calculates vibration characteristic values representing a character of vibration information indicating vibrations measured by vibration sensors measuring a vibration of an inspection target; calculates a scattering degree indicating a scattering degree of the calculated vibration characteristic values among the vibrations measured by the vibration sensors; and determines a condition of the inspection target based on a magnitude of the calculated scattering degree. 1. An inspection device comprising:a characteristic value calculator configured to calculate vibration characteristic values representing a character of vibration information indicating vibrations measured by vibration sensors measuring a vibration of an inspection target;a scattering degree calculator configured to calculate a scattering degree indicating a scattering degree of the calculated vibration characteristic values among the vibrations measured by the vibration sensors; anda determiner configured to determine a condition of the inspection target based on a magnitude of the calculated scattering degree.2. The inspection device according to claim 1 , whereinthe characteristic value calculator calculates the vibration characteristic values for vibration modes included in the measured vibrations, andthe determiner determines a damage of the inspection target based on a weighted average of scattering degrees for the vibration modes.3. The inspection device according to further comprisinga classifier configured to classify the vibration information in accordance with a magnitude of amplitude of the vibrations in the vibration information, whereinthe scattering degree calculator calculates the scattering degree for the classified vibration information.4. The inspection device according to claim 1 , whereinthe characteristic value ...

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Номер записи: 56

09-01-2020 дата публикации

FINGERPRINTING AND ANALYZING GEMSTONES

Номер: US20200011837A1

Автор: MAGANA Sally Catherine, Rhodes George Wyatt

Принадлежит: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

The embodiments disclosed herein relate to the examination of gemstones including diamonds, both cut/polished and rough, using the technology of Resonant Ultrasound Spectroscopy. The resonant frequencies are obtained by mechanically causing the stone to vibrate using a swept sine oscillator, sensing the resonance vibrations, and displaying the spectrum to yield a pattern describing the stone. The resonance fingerprints can be used to both track an individual stone to verify its integrity or to grade a rough stone to establish potential value. 1. A method , comprising: [ 'wherein the first input transducer is contacting a gemstone under evaluation;', 'sending an input signal to a first input transducer,'}, 'wherein the second receiver transducer is contacting the gemstone under evaluation;', 'receiving a resonance signal from a second receiver transducer,'}, 'stepping the input signal through a range of input frequencies;', 'receiving a range of received signals;, 'by a signal generator and a signal processor,'}processing, with algorithms, the range of received signals; andsending the processed range of received signals for the gemstone under evaluation to a computer for storage and display.2. The method of wherein the input signal is sent from the signal generator to the first transducer through an input amplifier; andwherein the received signal is received at the signal processor from the receiver transducer through a receiver amplifier.3. The method of wherein processing the received signal includes in-phase and quadrature components of the received signal.4. The method of wherein the signal processor includes a phase sensitive detector and digital signal processor.5. The method of wherein stepping the input signal through a range of input frequencies is stepped by 1 to 1000 Hz.6. The method of wherein the range of input frequencies is between 0.1 MHz and 4 MHz.7. The method of wherein the signal generator and the signal processor are configured on a chip claim 1 ...

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Номер записи: 57

09-01-2020 дата публикации

METHOD OF INSPECTING STRUCTURE AND INSPECTION SYSTEM

Номер: US20200011839A1

Автор: Jang Jinho, Liu Peipei, Sohn Hoon

Принадлежит: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

In a method of inspecting a structure, a first ultrasonic signal generated from a target structure by a first laser beam is received. The first ultrasonic signal is generated by providing the first laser beam generated from a first excitation unit to the target structure. A second ultrasonic signal generated from the target structure by a second laser beam different from the first laser beam is received. The second ultrasonic signal is generated by providing the second laser beam generated from a second excitation unit to the target structure. A third ultrasonic signal generated from the target structure by the first and second laser beams is received. The third ultrasonic signal is generated by simultaneously providing the first and second laser beams to the target structure. It is determined whether the target structure is damaged based on first, second and third ultrasonic frequency spectra that are obtained by converting the first, second and third ultrasonic signals, respectively. 1. A method of inspecting a structure , the method comprising:receiving a first ultrasonic signal generated from a target structure by a first laser beam, the first ultrasonic signal being generated by providing the first laser beam generated from a first excitation unit to the target structure;receiving a second ultrasonic signal generated from the target structure by a second laser beam, the second ultrasonic signal being generated by providing the second laser beam generated from a second excitation unit to the target structure, the second excitation unit and the second laser beam being different from the first excitation unit and the first laser beam, respectively;receiving a third ultrasonic signal generated from the target structure by the first laser beam and the second laser beam, the third ultrasonic signal being generated by simultaneously providing the first laser beam and the second laser beam to the target structure; anddetermining whether the target structure is damaged ...

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Номер записи: 58

09-01-2020 дата публикации

Systems and Methods for Damage Detection

Номер: US20200013160A1

Автор: Davies Christopher, Francis Kelly

Принадлежит: Belron International Limited

A system for detecting damage to a glass surface particularly vehicle glazing panels such as vehicle windscreens. The system uses a sensor unit disposed proximate the surface and a processor in communication with the sensor unit. The processor is configured to analyse data received from the sensor unit in order to determine the integrity of the surface and a communication unit is configured to output a signal in response to the processor determining that the surface has been damaged. For vehicle glass the system is preferably integrated into the vehicle management and control systems such that the system is active when the vehicle is active or moving. The management and or control system may monitor for instances or situations when changes, such as above threshold changes, occur in order to produce an output warning signal. 1. A system for detecting damage to a glass surface , the system comprising:a sensor unit disposed proximate the surface;a processor in communication with the sensor unit, wherein the processor is configured to analyze data received from the sensor unit to determine the integrity of the surface; anda communication unit configured to output a signal in response to the processor determining that the surface has been damaged.2. A damage detection system according to claim 1 , wherein the surface is a vehicle windscreen.3. A damage detection system according to claim 1 , wherein the sensor unit comprises a microphone and the processor comprises a sound amplification and signal processing system.4. A damage detection system according to claim 3 , wherein the processor is configured to identify a plurality of predetermined sound signals indicative of damage events.5. A damage detection system according to claim 1 , wherein the sensor unit comprises a camera arranged to image the surface and the processor comprises image processing software operable to analyze images received from the camera to identify any damage areas.6. A damage detection system ...

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Номер записи: 59

03-02-2022 дата публикации

STRUCTURE EVALUATION SYSTEM AND STRUCTURE EVALUATION METHOD

Номер: US20220034749A1

Автор: HASHIMOTO Katsufumi, SHIOTANI Tomoki, TAKAMINE Hidefumi, Watabe Kazuo

Принадлежит:

According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator. 1. A structure evaluation system comprising:a plurality of sensors which detect elastic waves;a position locator which locates positions of elastic wave sources on the basis of the plurality of elastic waves respectively detected by the plurality of sensors;a density distribution generator which generates an elastic wave source density distribution representing a distribution of densities of the elastic wave sources on the basis of results of the position locating of the elastic wave sources which is performed by the position locator;a corrector which corrects an elastic wave source density distribution serving as a comparison target which is obtained in advance by a sound structure by using a correction magnification for correcting the elastic wave source density distribution serving as a comparison target, in accordance with positions of the plurality of disposed sensors; andan evaluator which evaluates a deteriorated state of the structure on the basis of the elastic wave source density distribution generated by the density distribution generator and the elastic wave source density distribution serving as a comparison target which is corrected by the corrector.2. The structure evaluation system according to claim 1 , further ...

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Номер записи: 60

03-02-2022 дата публикации

YOUNG'S MODULUS AND POISSON'S RATIO DETERMINATION IN OBJECTS OF ARBITRARY GEOMETRY SYSTEMS AND METHODS

Номер: US20220034848A1

Автор: Dioumaev Andrei K.

Принадлежит:

Described herein are systems and methods for Young's modulus and Poisson's ratio determination of an object of arbitrary geometry. A measured vibrational response spectrum of the object is collected, and a simulated vibrational response spectrum of the object is generated. The measured vibrational response spectrum is compared with the simulated vibrational response spectrum. The comparison is treated as a global nonlinear optimization problem. An objective function is proposed to enable comparison of two spectra, which are available on two incompatible frequency scales, and have different number of peaks. The actual values of the Young's modulus and the Poisson's ratio are identified as the best-fitting values that minimize a mismatch between the simulated vibrational response spectrum and the measured vibrational response spectrum. Suitable systems for performing the methods are also provided. 1. A method comprising:collecting a measured vibrational response spectrum of an object under defined experimental conditions;generating a simulated vibrational response spectrum of the object; andidentifying a Young's modulus and a Poisson's ratio that minimize a mismatch between the simulated vibrational response spectrum and the measured vibrational response spectrum.2. The method of claim 1 , further comprising comparing two spectra that differ in the number of peaks and are available on two inconsistent frequency scales.3. The method of claim 2 , further comprising creating an objective function for optimization based on a correlation coefficient.4. The method of claim 1 , further comprising minimizing a mismatch between the measured vibrational response spectrum and the simulated vibrational response spectrum by optimizing both the Young's modulus and the Poisson's ratio.5. The method of claim 4 , wherein the minimizing comprises using a stochastic search engine to solve a nonlinear least squares optimization in the space of multiple local minima.6. The method of claim ...

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Номер записи: 61

03-02-2022 дата публикации

Apparatus and method for determining when to replace a seal component of a seal assembly

Номер: US20220034849A1

Автор: Klaus Meck, Mohamad Shadi Nashed

Принадлежит: John Crane UK Ltd

A computer implemented method of determining when to replace a seal component of a seal assembly includes obtaining an indication of an accumulation of acoustic emission energy emitted from the seal component over a period of time and determining an estimate of remaining lifetime of the seal component based on the indication.

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Номер записи: 62

03-02-2022 дата публикации

TESTING DEVICE

Номер: US20220034851A1

Автор: IKEDA Takayuki, Shishido Hideaki

Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

A cost of a testing device is reduced. A structure of a testing device is simplified. A testing device capable of testing with higher accuracy is provided. A testing device () has a structure including a sending unit (), a receiving unit (), a control unit (), and a display (). The control unit includes a memory portion () and an arithmetic portion (). The sending unit has a function of generating a pulse signal for a probe () to generate an ultrasonic wave (). The receiving unit has a function of generating a first signal including a first analog data (D) on the basis of the input single input from the probe. The memory portion has a function of storing the first analog data. The arithmetic portion has a function of generating an image signal (S0) output to the display on the basis of the first analog data stored in the memory portion. The display has a function of displaying an image based on the image signal. 1. A testing device comprising a sending unit , a receiving unit , a control unit , and a display ,wherein the control unit comprises a memory portion and an arithmetic portion,wherein the sending unit has a function of outputting a pulse signal for a probe to generate an ultrasonic wave,wherein the receiving unit has a function of generating a first signal including a first analog data on the basis of an input signal input from the probe and outputting it to the control unit,wherein the memory portion has a function of storing the first analog data,wherein the arithmetic portion has a function of generating an image signal output to the display on the basis of the first analog data stored in the memory portion, andwherein the display has a function of displaying an image based on the image signal.2. The testing device according to claim 1 ,wherein the receiving unit comprises an amplifier portion, andwherein the amplifier portion has a function of amplifying a potential of the input signal and generating a potential of the first analog data.3. The testing ...

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Номер записи: 63

17-01-2019 дата публикации

METHOD AND APPARATUS FOR NON-AUDIBLE SENSING OF A DEFIBRILLATOR STATUS INDICATOR

Номер: US20190015672A1

Автор: HALSNE ERIC GRANT

Принадлежит:

A monitoring device for monitoring the readiness state of an automated external defibrillator (AED) and communicating the state to a remote receiver is described. An associated method is described as well. The monitoring device captures a non-acoustic parameter related to the activation of the AED readiness state beeper. 1. A monitoring device for sensing an operating status of a defibrillator having an audible annunciator with a diaphragm , comprising:a sensor disposed adjacent the annunciator and operable to detect a non-audible parameter related to a diaphragm motion of the annunciator diaphragm;a hardware processor in electrical communication with the sensor; andan output in communication with the hardware processor for providing a signal indicative of the diaphragm motion.2. The monitoring device of claim 1 , wherein the sensor comprises a capacitive sensor.3. The monitoring device of claim 2 , further comprising an electrically conductive decal adhered to the defibrillator on a defibrillator surface adjacent the annunciator claim 2 , wherein the sensor is disposed to detect an annunciator-induced vibration of the defibrillator surface.4. The monitoring device of claim 1 , wherein the sensor comprises a temperature sensor claim 1 , and wherein the parameter is a temperature change induced by the motion of the diaphragm.5. The monitoring device of claim 1 , wherein the sensor comprises an optical sensor claim 1 , wherein the optical sensor is disposed to detect a change in reflectance of the diaphragm during the diaphragm motion.6. The monitoring device of claim 1 , wherein the sensor comprises an optical sensor and further comprising an optically reflective decal adhered to the defibrillator on a defibrillator surface adjacent the annunciator claim 1 , wherein the optical sensor is disposed to detect an annunciator-induced vibration of the defibrillator surface.7. The monitoring device of claim 1 , wherein the sensor comprises an accelerometer that is arranged ...

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Номер записи: 64

19-01-2017 дата публикации

ACTUATOR BRACKET HAVING A SENSOR

Номер: US20170016749A1

Автор: Good Benjamin Uriah, Jelken Shannon Eugene, Rachuy Mark Allen

Принадлежит:

Actuator bracket having a sensor is disclosed. An example apparatus includes a bracket having a first side and a second side opposite the first side. The first side is to couple to a first surface of an actuator. The second side is to couple to a controller. The apparatus also includes a first sensor coupled to the first side of the bracket. When the bracket is coupled to the first surface of the actuator, the first sensor is adjacent the first surface to measure a characteristic of the first surface of the actuator. 1. An apparatus comprising:a bracket having a first side and a second side opposite the first side, the first side to couple to a first surface of an actuator, the second side to couple to a controller; anda first sensor coupled to the first side of the bracket, wherein, when the bracket is coupled to the first surface of the actuator, the first sensor is adjacent the first surface to measure a characteristic of the first surface of the actuator.2. The apparatus of claim 1 , wherein the characteristic of the first surface of the actuator indicates a characteristic of at least one of a coupling of the bracket and the actuator claim 1 , a coupling of a controller and the bracket claim 1 , a yoke of the actuator claim 1 , a yoke lock nut claim 1 , and tubing between the controller and the actuator.3. The apparatus of claim 1 , wherein the first side of the bracket defines ribs to increase a rigidity of the bracket.4. The apparatus of claim 3 , wherein the first sensor is coupled to the bracket between at least two of the ribs and is recessed from an outer edge of the ribs to enclose the first sensor by the at least two of the ribs claim 3 , the first side of the bracket claim 3 , and the first surface of the actuator.5. The apparatus of claim 3 , wherein an outer edge of at least one of the ribs defines a groove to fixedly receive a wire coupled to the first sensor via potting claim 3 , the groove to prevent the wire from being damaged when the bracket is ...

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Номер записи: 65

18-01-2018 дата публикации

METHOD AND APPARATUS FOR ANALYZING A MATERIAL FLOW

Номер: US20180017420A1

Автор: BALTES Ralph, BOOS Franz Domenic, KNAPP Henning, NEUBERT Kilian, NIENHAUS Karl, VRAETZ Tobias, Wotruba Hermann

Принадлежит:

A method and an arrangement for analysis of a material flow (S) is disclosed having one or more material components. The material flow (S) is conducted via a conveyor line. One or more acoustic sensors are allocated to the conveyor line. Acoustic signals produced by the material flow (S) are detected by the acoustic sensors and then converted into digital signals. The digital signals are analyzed in an evaluating unit in a computer-assisted manner and analyzed by means of an algorithm in comparison to reference values specified based on individual identifying characteristics of the material components, such that the material components are identified and the mass fraction of at least one material component in the material flow (S) is determined. 19-. (canceled)10. A method for analyzing a material flow , comprising:guiding the material flow over a conveyor section;wherein the conveyor section comprises a plurality of sound sensors, wherein the sound sensors are arranged on a contact element of the conveyor section or one of the contact elements integrated into the conveyor section;detecting the acoustic signals generated by the material flow through the plurality of the sound sensors;converting the acoustic signals into digital signals;providing an evaluation unit;comparing the digital signals using the evaluation unit to the reference values determined by individual recognition features of the material components;comparatively assessing the digital signals;identifying the material components; and,determining a mass fraction of at least one material component in the material flow.11. The method of claim 10 , further comprising detecting the acoustic signals and evaluating in the form of acoustic emission and/or structure-borne sound and/or airborne sound and/or liquid-borne sound.12. The method of claim 11 , further comprising calculating and evaluation one or more of the following parameters:Arithmetic meanMedianVarianceStandard deviationEffective value/RMS value ( ...

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Номер записи: 66

18-01-2018 дата публикации

METHOD AND ARRANGEMENT FOR ACOUSTICALLY TESTING THE MECHANICAL INTEGRITY OF A CARTRIDGE

Номер: US20180017531A1

Автор: Boker Anne, Fischer Michael, Groeschke Jasmin, Hemberger Jurgen, Juhnke Hanno, Scharf Matthias, Schrack Michael, Spengler Jan-Peter, Zeckai Olaf

Принадлежит:

The present invention relates to a method of testing the mechanical integrity of a cartridge () containing a medicament and being arranged inside a drug delivery device (). The invention also relates to a testing arrangement and to a respective drug delivery device, wherein the method comprises the steps of: acoustically stimulating the cartridge (), measuring of the cartridge's () acoustic response () to the acoustic stimulation (), comparing the acoustic response () with a standard response () of an intact cartridge (), and determining the mechanical integrity of the cartridge () on the basis of the comparison. 1. A method of testing mechanical integrity of a cartridge containing a medicament and being arranged inside a drug delivery device , the method comprising:acoustically stimulating the cartridge,measuring an acoustic response of the cartridge to the acoustic stimulation,comparing the acoustic response with a standard response of an intact cartridge, anddetermining the mechanical integrity of the cartridge on the basis of the comparison.2. The method according to claim 1 , wherein acoustically stimulating the cartridge includes bringing a probe configured to emit acoustic signals in direct contact with the cartridge for directly acoustically stimulating the cartridge.3. The method according to claim 1 , wherein acoustically stimulating the cartridge comprises indirectly acoustically stimulating the cartridge by coupling a probe configured to emit acoustic signals to a device component of the drug delivery device claim 1 , wherein the device component is in direct mechanical contact with the cartridge.4. The method according to claim 1 , wherein acoustically stimulating the cartridge comprises indirectly acoustically stimulating the cartridge by coupling a probe configured to emit acoustic signals to a drug delivery device's housing claim 1 , which is acoustically coupled to a device component of the drug delivery device which is in direct mechanical contact ...

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Номер записи: 67

18-01-2018 дата публикации

AN APPARATUS AND METHOD FOR INSPECTING A PIPELINE

Номер: US20180017533A1

Автор: Doust Paul, Fleury Wayne, Norli Petter

Принадлежит: HALFWAVE AS

It is described an apparatus for inspecting a pipeline, said apparatus including a cylindrical body () adapted to be transported inside said pipeline, an array of acoustical transducers (T) installed in the surface of the cylindrical body (), the acoustical transducers being organized in columns and rows in a belt around the cylindrical body, a controller adapted to initiate a transmission of an acoustical signal from a first transducer (T) and a reception of said acoustical signal from other transducers in said array surrounding the first transducer, the controller further being adapted to determine the direction to a flaw in the wall of said pipeline from the received acoustical signals. 11515. An apparatus for inspecting a pipeline , said apparatus including: a cylindrical body () adapted to be transported inside said pipeline , an array of acoustical transducers (T) installed in the surface of the cylindrical body () , the acoustical transducers being organized in columns and rows in a belt around the cylindrical body , characterized in that the apparatus includes a controller adapted to initiate a transmission of an acoustical signal from a first transducer and a reception of said acoustical signal from other transducers in said array surrounding the first transducer , said other transducers in said array detecting signals travelling in all direction from said first transducer , the controller further being adapted to determine the distance and direction to a flaw in the wall of said pipeline by comparing the signals received by said other transducers.2. An apparatus according to claim 1 , wherein the controller is adapted to initiate transmission of a signal exiting a thickness mode of the pipeline wall.3. A method for testing the wall of a pipeline claim 1 , said method including the steps of: transmitting an acoustical signal from a first transmitting transducer facing the wall and positioned in a distance from the wall claim 1 , the signal exciting a ...

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Номер записи: 68

17-01-2019 дата публикации

Integration of Digital Image Correlation with Acoustic Emission

Номер: US20190017968A1

Автор: Bartoli Ivan, Kontsos Antonios, Vanniamparambil Prashanth Abraham

Принадлежит:

An inventive approach is disclosed to integrate Digital Image Correlation (DIC) with the Acoustic Emission method that may be used for structural health monitoring and assessment of critical structural components in civil, mechanical, and aerospace industries. The inventive approach relies on passively recording acoustic emission across the specimen being tested and activating the DIC cameras automatically to measure deformation on the specimen's surface. The resulting acousto-optic system can be used to determine damage initiation, progressive damage development, identify critical regions and make lifetime predictions of the tested specimen. 1. A nondestructive method of determining the structural integrity of a specimen as a load is applied to the specimen , the method comprising the steps of:attaching at least one acoustic sensor to the specimen;applying a contrasting pattern on the surface of the specimen;calibrating a pair of stereoscopic cameras at the contrasting pattern;passively recording acoustic stress waves propagating in the specimen in an Acoustic Emission (AE) system electronically coupled to the at least one acoustic sensor;triggering operation of the cameras by the AE system;measuring deformation in the specimen based on load-induced movement of the contrasting pattern in a Digital Image Correlation (DIC) system, the DIC system being electronically coupled to the cameras; andcorrelating acoustic stress waves and strain data to determine the structural health of the specimen.2. The method according to claim 1 , further comprising claim 1 , after calibrating the cameras at the contrasting pattern claim 1 , applying a load to the specimen.3. The method according to claim 2 , wherein the load applying step comprises attaching the specimen to a load applying test stand.4. The method according to claim 3 , wherein the at least one acoustic sensor and the cameras are electrically connected to the test stand.5. The method according to claim 4 , wherein a ...

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Номер записи: 69

22-01-2015 дата публикации

Determination assist system of ultrasonic testing, determination assist method of ultrasonic testing, determination assist program of ultrasonic testing, and computer-readable storage medium for storing determination assist program of ultrasonic testing

Номер: US20150020594A1

Автор: Hideyuki Hirasawa, Hironori Okauchi, Katsumi Nagata, Kenji Tsubaki, Toshihiro Yamaoka

Принадлежит: Kawasaki Jukogyo KK

A determination assist system including a first image generating section for generating a first planar image based on data of a first test index; a second image generating section for generating a second planar image based on data of a second test index; a differentiation section which differentiates the first planar image and the second planar image to generate a first differential image and a second differential image, respectively; a binarization section which binarizes the first differential image to generate a first binary image including a first region which is not less than a first threshold and a second region, which is less than the first threshold, and binarizes the second differential image to generate a second binary image including a third region which is not less than a second threshold and a fourth region which is less than the second threshold; and a determination image generating section.

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Номер записи: 70

16-01-2020 дата публикации

CONTROL METHOD, INSPECTION SYSTEM, AND STORAGE MEDIUM

Номер: US20200018727A1

Автор: Matsumura Atsushi, Ono Toshiyuki

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a control method includes setting a transmission angle of an ultrasonic wave to a standard angle. The control method further includes transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object. The control method further includes calculating a tilt angle based on a gradient of the intensity. The tilt angle indicates a tilt of the object. The control method further includes resetting the transmission angle based on the tilt angle. 1. A control method , comprising:setting a transmission angle of an ultrasonic wave to a standard angle;transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object;calculating a tilt angle based on a gradient of the intensity, the tilt angle indicating a tilt of the object; andresetting the transmission angle based on the tilt angle.2. The method according to claim 1 , wherein the transmitting claim 1 , the detecting claim 1 , and the calculating are performed again after the resetting.3. The method according to claim 1 , whereina first loop of repeating the detecting, the calculating, and the resetting is performed after the resetting,the first loop includes determining whether or not the first loop has ended, andthe first loop is performed until the determining determines that the first loop has ended.4. The method according to claim 3 , wherein the determining determines that the first loop has ended when a number of repetitions of the detecting or the calculating reaches a prescribed number of times or more.5. The method according to claim 3 , whereina difference between a second tilt angle and a first tilt angle is calculated when a plurality of the tilt angles is calculated by the first loop, the plurality of tilt angles including the first tilt angle and the second tilt angle, the second tilt angle being calculated after the first tilt angle, andthe determining determines that ...

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Номер записи: 71

16-01-2020 дата публикации

ADHESIVE BOND TEST RESONANCE ARRAY

Номер: US20200018728A1

Автор: Amos Jay M., Kodumuru Bharath Kumar

Принадлежит:

An adhesive bond test resonance array provides inspection of adhesively bonded composite laminate structures with improved productivity and higher reliability. A holder has multiple slots arranged in a two-dimensional array for holding transducers in respective slots. The holder is adapted to position a probe end of each of the transducers adjacent a component for scanning and has a material hardness adapted for enabling flexing while scanning curved composite parts. A fluid channel is adapted for delivering a couplant to the probe end of the transducers such that the couplant is automatically delivered during scanning of the component to inspect bond integrity. 1. An adhesive bond test resonance array , comprising:a holder having a plurality of slots arranged in a two-dimensional array;a plurality of transducers each disposed in the plurality of slots, respectively, the holder being adapted to position a probe end of each of the plurality of transducers adjacent a component for scanning; anda fluid channel adapted for delivering a couplant to the probe end of the plurality of transducers such that the couplant is automatically delivered during scanning of the component.2. The adhesive bond test resonance array of claim 1 , wherein the two-dimensional array comprises an irregular pattern to reduce an overall footprint of the array claim 1 , the irregular pattern being compact for scanning close to component edges and irregular geometrical features.3. The adhesive bond test resonance array of claim 1 , wherein the holder is adapted to provide enough rigidity for supporting closely spaced transducers claim 1 , while also being adapted to provide enough flexibility for flexing with contours of curved components.4. The adhesive bond test resonance array of claim 1 , the holder comprising:a receiving side adapted for receiving the plurality of transducers into the respective plurality of slots;an interface side, opposite the receiving side, adapted for interfacing with a ...

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Номер записи: 72

16-01-2020 дата публикации

Detection system, detection device, and detection method

Номер: US20200018729A1

Автор: Kazuo Watabe, Takahiro Omori, Tomoya FUMIKURA

Принадлежит: Toshiba Corp

According to one embodiment, a detection system of an embodiment includes a sensor configured to detect elastic waves and a determiner. The determiner determines a region where an elastic wave generation source is positioned on the basis of waveform information if the waveform information including a plurality of peak groups related to one elastic wave is included in a detection result of the sensor.

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Номер записи: 73

16-01-2020 дата публикации

SOUND MEASUREMENT SYSTEM FOR A MOTOR VEHICLE

Номер: US20200018730A1

Автор: Auguet Thierry, GRANDJEAN SYLVAIN, Linda Jean-Louis

Принадлежит:

A sound measurement system intended to be installed on a motor vehicle, the system comprising: a microphone, an element for supporting the microphone, mechanical means for protecting the microphone against various projections (water, dust, etc.) from the environment of the vehicle, and mechanical means for protecting the microphone from airborne noise originating from the routing of the sound wave between the source and the measurement (cavity noise) and from the environment of the measuring system (turbulence around the measuring device), the various mechanical protection means being separate or combined. A motor vehicle may be provided with such a system. 19.-. (canceled)10. A sound measurement system intended to be installed on a motor vehicle , the system comprising:a microphone;an element for supporting the microphone;mechanical means for protecting the microphone against projections from an environment of the vehicle; andmechanical means for protecting the microphone from airborne noise originating from routing of a sound wave between a source and the measurement system, and for protecting the microphone from the environment of the measurement system,wherein the mechanical means are separate or combined.11. The sound measurement system according to claim 10 , wherein the element for supporting the microphone comprises a polygonal seat circumscribed by a cone.12. The sound measurement system according to claim 10 , wherein the mechanical means comprise a protective cover comprising:a deflector installed between the microphone and the noise source; andcolumns parallel to the microphone installed on respective opposite sides thereof.13. The sound measurement system according to claim 10 , wherein the mechanical means comprise lateral lugs installed on the element.14. The sound measurement system according to further comprising mechanical means for protecting the microphone against noise transmitted by conduction in a solid and originating from the motor vehicle ...

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Номер записи: 74

21-01-2021 дата публикации

METHOD OF DETECTING CRACK PROPAGATION IN WALL OF A METALLURGICAL FURNACE AND A DETECTION UNIT

Номер: US20210018469A1

Автор: Chandra Sanjay, Indimath Shivanandan S., Kundu Subhashis, Mani Kokila, Padmapal , Rajendran Shunmuga Sundaram, Singh Uttam, Sriniwasagan Balamurugan, Tiwari Mayank

Принадлежит: Tata Steel Limited

The present disclosure relates to a method of detecting crack propagation in a wall of a metallurgical furnace by a detection unit. The detection unit is configured to extract one or more dominant frequency parameters from the corresponding reflected stress signal, and analysing, a phase from each dominant frequency parameters. The analysing of the phase comprises determines, one or more coefficients for each dominant frequency parameters. The detection unit then identifies, a dominant phase based on the corresponding one or more coefficients and selects a frequency relevant to a thickness parameter based on the dominant phase. The crack propagation in the wall of the metallurgical furnace is then detected based on the frequency relevant to the thickness parameter at each of the one or more locations. The present disclosure provides an accurate method for determining condition of refractory lining by elimination unwanted noise signals. 1. A method of detecting crack propagation in a wall of a metallurgical furnace by a detection unit , comprising:transmitting, by a signal generating unit of the detection unit, a stress signal into the wall, at one or more locations on the wall of the metallurgical furnace;receiving, by the detection unit, a reflected stress signal from each of the one or more locations based on the corresponding stress signal;{'sub': 'd', 'extracting, by the detection unit, one or more dominant frequency parameter (f) from the corresponding reflected stress signal, from each of the one or more locations; and'}{'sub': 'd', 'claim-text': [{'sub': 'd', 'determining, by the detection unit, one or more coefficients (Y) for each of the one or more dominant frequency parameters (f) based on the reflected stress signal and a reference signal;'}, {'sub': d', 'd, 'identifying, by the detection unit, a dominant phase (Ø) for each of the one or more dominant frequency parameters (f) based on the corresponding one or more coefficients (Y),'}, {'sub': t', 'd', 'd ...

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Номер записи: 75

25-01-2018 дата публикации

Spindle device for a program-controlled machine tool

Номер: US20180021908A1

Автор: Hans Veittinger

Принадлежит: DECKEL MAHO PFRONTEN GMBH

A machining unit for a program-controlled machine tool. In particular, a spindle device for a program-controlled machine tool including a spindle housing; a working spindle which is mounted in the spindle housing in a rotatable manner about a spindle axis and which includes a clamping device for clamping a tool interface that is inserted in a tool receiving section of the spindle device and is configured to hold a milling or boring tool; and a sensor device which is arranged on the spindle housing and which includes at least one structure-borne sound sensor configured to detect structure-borne sounds or vibrations occurring during grinding operations.

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Номер записи: 76

17-04-2014 дата публикации

METHOD FOR THE DYNAMIC QUANTITATIVE CHARACTERIZATION OF THE AGEING OF SOLID MATERIALS

Номер: US20140107945A1

Автор: Gregori Giovanni

Принадлежит:

A method, starting from acoustic emission signals of a material under examination, for determining parameters dynamically characterizing an ageing state of a material is described. The method focuses on solid material properties that are widely sub-microscopic and as such are non-observable by any other known experimental method. 1. A method for a quantitative dynamic characterization of an ageing of a material , to which at least one acoustic transducer is applied , which is dedicated to a corresponding pre-defined acoustic oscillation frequency ν to provide an acoustic emission signal AE emitted by the material in a pre-defined time interval , the AE emission signal provided by each acoustic transducer being composed by a discrete series of rms values f(t) of electrical potential values as measured at subsequent time points twith j=0 , 1 , 2 , . . . , which are spaced apart by a time interval Δt that is pre-determined as a function of the material and the wished speed of analysis of the same material , the method comprising execution of the following analysis steps of the AE acoustic emission signals:{'sub': 'j', 'claim-text': a process of elementary material collapsing or leak domain,', 'a time sequence of the outliers denoting a time evolution of the leak domains associated to frequency ν, and', 'a state change occurring in the material;, 'A. finding outliers of said AE emission signal for each frequency ν, each outlier indicating a tail in a statistical distribution of the values f(t) and therefore indicating{'sub': 'j', 'B. starting from said discrete series of values f(t), removing from said values the outliers as found in step A, and constructing a hammer diagram;'}{'sub': h', 'h, 'C. calculating a function of a hammer index H(t) at time instants t=1, 2, 3, . . . , from the hammer diagram in step B, wherein the hammer index only assumes either value +1, representing an average anti-clockwise curvature in a trajectory described by the hammer diagram and ...

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Номер записи: 77

26-01-2017 дата публикации

METHOD AND DEVICE FOR INSPECTION OF SOLIDS BY MEANS OF ULTRASOUND

Номер: US20170023527A1

Автор: Mattei Christophe

Принадлежит:

A method, a computer program and a system for ultrasonic inspecting of objects is provided. The method comprises positioning () a measuring device () comprising a plurality of transducers () on the inspected object () and performing a number of test signal acquisitions (). Each acquisition includes using one transducer to induce an ultrasonic signal into the test object, and using at least one other transducer to receive an ultrasonic test signal. The inspecting further comprises determining () the influence of contact surface variations between each test signal and a reference signal; compensating () the full test signal for the contact surface variations; and determining () a residual signal. The system comprises a computing device (), and a measuring system () communicatively connected to the computing device (). The measuring system () includes an ultrasound unit () and a measuring device () provided with a plurality of transducers (). The computing device () comprises a calibrator () to determine () the influence of contact surface variations, and compensate () the test signal. The computing device () comprises a residual calculator () to determine () the residual signal. 1. A method for inspecting objects by means of ultrasound , wherein reference signals are used as references for test signals in order to establish residual signals indicating flaws in the objects , said method comprising:inspecting a test object at one or more positions, the inspecting of one position comprises:positioning a measuring device comprising a plurality of transducers in a selected position on the inspected object, so that the ultrasonic transducers are in contact with the inspected object,performing a number of test signal acquisitions at the selected position, each test signal acquisition comprising:using one transducer of the plurality transducers as a sending probe to induce an ultrasonic signal into the test object, and using at least one other transducer of the transducers as ...

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Номер записи: 78

26-01-2017 дата публикации

NON-CONTACT DURABILITY DIAGNOSIS APPARATUS AND METHOD

Номер: US20170023530A1

Автор: Lim Cheol Woo, Park Byeong-Jin, Park Jae Roung, Sohn Hoon, Song Byeongju

Принадлежит:

A non-contact durability diagnosis apparatus includes: (a) applying non-contactly and sequentially at least two excitation ultrasonic waves to an object and storing frequency signals generated from the object; (b) applying non-contactly and simultaneously the at least two excitation ultrasonic waves to the object and storing frequency signals generated from the object; (c) storing derived frequency signals remaining after removing an overlapping portion of the frequency signals of step (a) and the frequency signals of step (b); and (d) determining that the object is damaged when at least one of the generated frequency signals of step (c) is larger than a predetermined value. 1. A non-contact durability diagnosis method comprising:(a) applying non-contactly and sequentially at least two excitation ultrasonic waves to an object and storing frequency signals generated from the object;(b) applying non-contactly and simultaneously the at least two excitation ultrasonic waves to the object and storing frequency signals generated from the object;(c) storing derived frequency signals remaining after removing an overlapping portion of the frequency signals of step (a) and the frequency signals of step (b); and(d) determining that the object is damaged when at least one of the generated frequency signals of step (c) is larger than a predetermined value.2. The non-contact durability diagnosis method of claim 1 , wherein: (a-1) applying sequentially a first excitation ultrasonic wave and a second excitation ultrasonic wave having a frequency different than a frequency of the first excitation ultrasonic wave; and', '(a-2) measuring and storing a first frequency signal generated from the object by the first excitation ultrasonic wave and a second frequency signal generated from the object by the second excitation ultrasonic wave., 'step (a) further comprises3. The non-contact durability diagnosis method of claim 2 , wherein: (b-1) applying non-contactly and simultaneously the ...

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Номер записи: 79

25-01-2018 дата публикации

METHOD AND SYSTEM FOR JOINT INSPECTION

Номер: US20180024098A1

Автор: Phillips Paul

Принадлежит:

A method of inspecting a joint of a heat exchanger comprises: scanning the heat exchanger with an electromagnetic acoustic transducer (EMAT) sensor by scanning the EMAT sensor over an area of the heat exchanger in a scanning pattern; collecting data from the EMAT sensor analysing the data; and determining a status of the joint based on the analysed data. 1. A method of inspecting a joint of a heat exchanger , the method comprising:scanning the heat exchanger with an electromagnetic acoustic transducer (EMAT) sensor by scanning the EMAT sensor over an area of the heat exchanger in a scanning pattern;collecting data from the EMAT sensor;analysing the data; anddetermining a status of the joint based on the analysed data.2. The method as claimed in claim 1 , wherein the scanning pattern is two-dimensional.3. The method as claimed in claim 1 , wherein the scanning pattern is determined based on a computer model of the heat exchanger.4. The method as claimed in claim 3 , wherein the scanning pattern covers an area of the heat exchanger including the joint and omits an area of the heat exchanger without the joint.5. The method as claimed claim 1 , wherein collecting data from the EMAT sensor comprises collecting data from a plurality of locations within the scanning pattern.6. The method as claimed in claim 1 , wherein the collection of data from the EMAT sensor comprises recording the time of collection of the data.7. The method as claimed claim 1 , wherein analysing the data comprises using a wavelet transform.8. The method as claimed in claim 1 , wherein determining a status of the joint comprises determining a quality of the joint within the heat exchanger.9. The method as claimed in claim 1 , wherein analysing data comprises comparing the data to a database of known defects.10. The method as claimed in claim 9 , further comprising updating the database based on the analysed data and the determined status of the joint.11. The method as claimed in claim 1 , comprising ...

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Номер записи: 80

10-02-2022 дата публикации

STATE ESTIMATION DEVICE AND STATE ESTIMATION METHOD

Номер: US20220042952A1

Автор: KURIYAMA Toshiyuki

Принадлежит: Mitsubishi Electric Corporation

A state estimation device calculates a state transition table indicating a state transition assumed in an object every time a connection pattern between partial waveforms is changed, selects a connection pattern from the state transition table on the basis of entropy that is a statistical index of the state transition of the object, and estimates a state of the object at each time and a state transition of the object on the basis of the selected connection pattern. 1. A state estimation device comprising processing circuitryto perform division of a waveform of time-series data detected from an object into a plurality of partial waveforms by a first division number and a second division number lamer than the first division number,to extract a feature of each of the plurality of partial waveforms,to cluster the plurality of partial waveforms on a basis of the feature of each of the plurality of partial waveforms,to calculate a state transition table indicating a state transition assumed for the object every time a connection pattern between the plurality of partial waveforms divided by the second division number is changed, and to select the connection pattern from the state transition table on a basis of a statistical index of the state transition of the object, andto estimate a state of the object at each time and the state transition of the object on a basis of the connection pattern selected.2. The state estimation device according to claim 1 , wherein the state transition table is selected on a basis of entropy indicating variation in frequency of a state transition of the object.3. The state estimation device according to claim 1 , wherein the division of the waveform of time-series data is performed in accordance with a Ramer Douglas Peucker algorithm.4. A state estimation method performed by a state estimation device claim 1 , the method comprising:performing division of a waveform of time-series data detected from an object into a plurality of partial ...

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Номер записи: 81

24-04-2014 дата публикации

Methods for characterizing vibration of a rack structure

Номер: US20140109674A1

Автор: Aleksey M. Urmanov, Anton A. Bougaev, David K. McElfresh, Kenny C. Gross

Принадлежит: Oracle America Inc

A system for characterizing vibration of a rack structure having at least one hard disk drive disposed therein and a vibration exciter operatively associated with the rack structure includes one or more computers. The one or more computers are configured to command the vibration exciter to provide vibration input to the rack structure and to command a plurality of reads from the at least one hard disk drive such that, for each of the plurality of reads, data stored on the at least one hard disk drive is retrieved from the at least one hard disk drive. The one or more computers are also configured to obtain read rate information related to the plurality of reads and to identify at least one resonant frequency of the rack structure based on the read rate information.

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Номер записи: 82

24-01-2019 дата публикации

Combined Vibrational Spectroscopy and Laser Induced Breakdown Spectroscopy for Improved Mineralogical and Geochemical Characterization of Petroleum Source or Reservoir Rocks

Номер: US20190025198A1

Автор: Washburn Kathryn Elizabeth

Принадлежит: Halliburton Energy Services, Inc.

A method for determining mineralogical or geochemistry of at least one geological sample with vibrational spectroscopy combined with laser-induced breakdown spectral measurements performed on the geological sample in a time variant manner with spectral acquisitions made after each of a plurality of measurement shots, spectral pre-processing performed as necessary, and subsequent analysis is applied to the collected data to determine at least one mineralogical or geochemistry parameter of the sample. The method can provide a rapid method to estimate mineralogy or geochemical parameters of a sample, which does not require sample preparation, and which can be non-destructive with respect to portions of the sample. A system for performing the method also is provided. 1. A method for performing kinetic analysis as geochemical information of a sample of a petroleum source or reservoir rock , comprising:a) making a vibrational spectroscopy measurement on the sample of a petroleum source or reservoir rock;b) heating the sample, or a second sample of the petroleum source or reservoir rock that has a similar composition and structure; i) determining changes in amounts of elements associated with organic matter and hydrocarbons for a portion of the sample or the second sample that is heated by the laser-induced pyrolysis,', 'ii) collecting and analysing hydrocarbon species produced by pyrolysis of a portion of the sample from the laser-induced pyrolysis by a flame ion detector or gas chromatography-mass spectrometry (GC-MS),', 'iii) monitoring weight of the sample during the laser-induced pyrolysis of the sample,', 'iv) monitoring the temperature of the sample and determining the amount of energy inputted into the portion of the sample by the laser during the laser-induced pyrolysis, or using any combination of i), ii), iii), and iv)., 'c) determining a reaction rate, such as a value of the Arrhenius equation rate constant k, of the sample of the second sample comprising at ...

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Номер записи: 83

24-01-2019 дата публикации

FREEZE DETECTOR FOR A PIPE OF A CONTAINER

Номер: US20190025259A1

Автор: MAGNUSSON Fredrik

Принадлежит:

The present invention relates to a freeze detector () for a pipe or container () being adapted for holding and transporting water or water containing liquids, said freeze detector () comprising a microphone housing (), comprising a microphone (), adapted to be mounted on an outside surface () of said pipe or container (), and adapted to receive sound from within said pipe or container (), said sound forming an acoustic pattern, an attachment member () for attaching said microphone () to said pipe, and an processing unit() adapted to receive, process and analyze the acoustic pattern of the sound transmitted by the microphone and to be activated when at least one predetermined threshold value (T) is detected in the acoustic pattern received by said microphone (), wherein said threshold value (T) indicates local freezing of said water or water containing liquids inside said pipe or container (). 1. A freeze detector for a pipe or container being adapted for holding and transporting water or water containing liquids , which freeze detector is capable of detecting imminent freezing inside the pipe or container , said freeze detector comprisinga microphone housing, comprising a microphone, adapted to be mounted on an outside surface of said pipe or container, and adapted to receive sound from within said pipe, said sound forming an acoustic pattern indicating imminent freezing water,an attachment member for attaching said microphone to said pipe, and{'sub': freeze', 'freeze, 'an processing unit adapted to receive, process and analyze the acoustic pattern of the sound transmitted by the microphone and to be activated when at least one predetermined threshold value (T) is detected in the acoustic pattern received by said microphone, wherein said threshold value Tindicates imminent local freezing of said water or water containing liquids inside said pipe or container.'}2. The freeze detector according to claim 1 , wherein said microphone is a contact microphone adapted to ...

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Номер записи: 84

29-01-2015 дата публикации

Resonant transducer, manufacturing method therefor, and multi-layer structure for resonant transducer

Номер: US20150028434A1

Автор: Shigeto IWAI, Shuuji OKUDA, Takashi Yoshida

Принадлежит: Yokogawa Electric Corp

A resonant transducer includes a silicon single crystal substrate, a silicon single crystal resonator disposed over the silicon single crystal substrate, a shell made of silicon, surrounding the resonator with a gap, and forming a chamber together with the silicon single crystal substrate, an exciting module configured to excite the resonator, a vibration detecting module configured to detect vibration of the resonator, a first layer disposed over the chamber, the first layer having a through-hole, a second layer disposed over the first layer, a third layer covering the first layer and the second layer, and a projection extending from the second layer toward the resonator, the projection being spatially separated from the resonator, the projection being separated from the first layer by a first gap, the second layer being separated from the first layer by a second gap, the first gap is communicated with the second gap.

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Номер записи: 85

23-01-2020 дата публикации

An In-Line, Contactless and Non-Destructive Method and System for Detecting Defects in a Moving Cardboard Structure

Номер: US20200025720A1

Автор: "DANGLADE Pierre-Michel", ARDIN Cédric, BERRY Alain, Masson Patrice, Quaegebeur Nicolas

Принадлежит:

An in-line, contactless and non-destructive method for detecting and identifying defects in a moving cardboard structure is provided, as well as the associated system. The cardboard structure is of the type made of layered paper plies, such as cardboard tubes for example. The method includes the steps of emitting acoustic waves with predetermined frequencies toward the moving cardboard structure. The acoustic waves are converted into mechanical waves propagating through the moving cardboard structure. The method also includes a step of capturing the acoustic waves propagated, wherein said captured acoustic waves result from a conversion of the propagated mechanical waves through the moving cardboard structure. The method also provides steps of analyzing the captured acoustic waves; and detecting and identifying defects in the moving laminated cardboard structure based on predetermined propagation properties measured from the captured acoustic waves. 1. An in-line , contactless and non-destructive method for detecting and identifying defects in a moving laminated cardboard tube made of layers of spirally wound paper plies , the method comprising the steps of:emitting acoustic waves with predetermined frequencies in an airspace toward the moving laminated cardboard tube at a first location, the acoustic waves being converted into mechanical waves propagating through the moving laminated cardboard tube;capturing the acoustic waves propagated in the airspace at a second location, spaced away from the first location, wherein said captured acoustic waves result from a conversion of the propagated mechanical waves through the moving laminated cardboard tube;analyzing the captured acoustic waves; anddetecting and identifying defects in the moving laminated cardboard tube based on predetermined propagation properties measured from the captured acoustic waves.2. (canceled)3. The method according to claim 1 , wherein the moving laminated cardboard tube has a lengthwise axis ...

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Номер записи: 86

04-02-2016 дата публикации

MEDICAL TUBING INSTALLATION DETECTION

Номер: US20160030655A1

Автор: Beri Joseph Stephen, Fox Ronald Robert, Harbaugh Jeremy Thomas, III Samuel Ernest, JR. Regis Joseph, Magargi, Monahan Tom, Winniewicz, Wright Nigel, Zang Michael John, Zatezalo Douglas Mark

Принадлежит:

This disclosure relates to detecting fluid in medical tubing. In certain aspects, a method is performed by a data processing apparatus. The method includes controlling repetitive activation of the ultrasonic transmitter. The method also includes receiving a signal from the ultrasonic receiver during an activation of the ultrasonic transmitter. The method also includes determining that fluid is absent or present in a portion of the medical fluid tube based on a comparison between the signal and a threshold value. 119-. (canceled)20. A dialysis medical system comprising:a dialysis medical machine;a control unit;a portable computing device that is configured to wirelessly communicate with the control unit;a medical fluid tube connected to the dialysis medical machine;an ultrasonic transmitter positioned adjacent to the medical fluid tube;an ultrasonic receiver positioned adjacent to the medical fluid tube configured to receive one or more signals in response to the activation of the ultrasonic transmitter; and activating the ultrasonic transmitter for a first period; and', 'deactivating the ultrasonic transmitter for a second period;, 'controlling repetitive activation of the ultrasonic transmitter, wherein controlling repetitive activation of the ultrasonic transmitter comprises, for each repetition, 'a computer storage medium encoded with computer program instructions that when executed by the dialysis medical system, cause the control unit to perform operations comprisingwherein at least one of the following is provided:(i) the first period and the second period are chosen to minimize cavitation in fluid carried in the medical fluid tube, or(ii) based on comparison of a threshold value and a signal received from the ultrasonic receiver during an activation of the ultrasonic transmitter for the first period, presence or absence of fluid in a portion of the medical fluid tube is determined.21. The system of claim 20 , wherein the first period is 5 milliseconds and the ...

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Номер записи: 87

28-01-2021 дата публикации

METHOD FOR DETECTING THE SPLITTING OF A SUBSTRATE WEAKENED BY IMPLANTING ATOMIC SPECIES

Номер: US20210028036A1

Автор: Ben Mohamed Nadia, Kononchuk Oleg, Landru Didier, Mazen Frederic, Rieutord François

Принадлежит:

A method for monitoring a heat treatment applied to a substrate comprising a weakened zone formed by implanting atomic species for splitting the substrate along the weakened zone, the substrate being arranged in a heating chamber, the method comprising recording sound in the interior or in the vicinity of the heating chamber and detecting, in the recording, a sound emitted by the substrate during the splitting thereof along the weakened zone. A device for the heat treatment of a batch of substrates comprises an annealing furnace comprising a heating chamber intended to receive the batch, at least one microphone configured to record sounds in the interior or in the vicinity of the heating chamber, and a processing system configured to detect, in an audio recording produced by the microphone, a sound emitted when a substrate splits. 1. A method for monitoring a heat treatment applied to a substrate comprising a weakened zone formed by implanting atomic species for splitting the substrate along the weakened zone , the substrate being located in a heating chamber , the method comprising recording sound in the interior or in the vicinity of the heating chamber and detecting , in the recording , a sound emitted by the substrate during the splitting thereof along the weakened zone.2. The method of claim 1 , wherein the recording is made with a microphone located in the interior of the heating chamber.3. The method of claim 1 , wherein the recording is made with a microphone arranged on an exterior wall of an annealing furnace containing the heating chamber.4. The method of claim 1 , wherein the recording is made with a microphone located between a thermal screen and a door of an annealing furnace allowing access to the heating chamber.5. The method of claim 1 , wherein the recording is made with a microphone located in a tube that opens onto the interior of the heating chamber.6. The method of claim 1 , further comprising claim 1 , from the recording of the sound in the ...

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Номер записи: 88

17-02-2022 дата публикации

SYSTEM AND METHOD FOR MONITORING A SCREENING MACHINE

Номер: US20220048076A1

Автор: Trojosky Mathias

Принадлежит:

There is provided a system for monitoring a screening machine, comprising a vibration sensor configured to record a vibration response of a screen fabric of the screening machine; and a signal processing device for digitally processing and evaluating the vibration response. In this connection, the signal processing device comprises an adaptive algorithm which is based on the methods of artificial intelligence, is related to vibration responses of one or several comparative screen fabrics and is adapted to characterize the vibration response recorded by the vibration sensor. Furthermore, a method for monitoring a screening machine is presented. 2100. The system () according to claim 1 ,{'b': ['250', '250', '200', '200'], '#text': 'wherein the characterization of the recorded vibration response () is performed with the aid of error signatures which are characteristic for deviations of the recorded vibration responses () between a normal state of the screen fabric () and an error state of the screen fabric (),'}{'b': ['200', '200'], '#text': 'wherein the normal state characterizes the screen fabric () having no defect, and the error state characterizes the screen fabric () having a defect.'}3100200280. The system () according to claim 1 , wherein the comparative screen fabrics comprise screen fabrics which are different from the screen fabric () of the screening machine () to be monitored.4100250200220240. The system () according to claim 1 , wherein the adaptive algorithm is related to previous vibration responses () of the screen fabric () recorded by the vibration sensor ( claim 1 , ).5100210225200280. The system () according to which further comprises an excitation device () which is configured to impress a vibration () to the screen fabric () of the screening machine ().6100210200280. The system () according to claim 5 , wherein the excitation device () is configured to impress a broadband vibration spectrum to the screen fabric () of the screening machine (). ...

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Номер записи: 89

04-02-2016 дата публикации

Method, computer program product & system

Номер: US20160033363A1

Автор: Allan Thomson, Brian Murray, Ivan ROCHFORD

Принадлежит: SKF AB

A method for processing data obtained from a condition monitoring system, the method comprising steps of obtaining one of a vibration enveloped or an acoustic emission envelope time waveform from at least one sensor, counting at least one of: (a) how many transient events cross a plurality of predetermined threshold levels within the time waveform, (b) a rate at which transient events cross a plurality of predetermined threshold levels within the time waveform, and (c) determining a periodicity of repetition of the transient events where applicable.

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Номер записи: 90

31-01-2019 дата публикации

Process to Mitigate Unwanted Formation of Popcorn Polymers Using Acoustic Emission Signals

Номер: US20190030454A1

Автор: Thoret Bauchet Jean-Pierre

Принадлежит:

Process to monitor unwanted formation of a polymer, having internal mechanical strain, wherein said formation of polymer generates acoustic emissions due to the sudden break of the polymer, wherein the number of said acoustic emissions increases over time when there is formation of said unwanted polymer formation, wherein said acoustic emissions is detected by a resonant piezo electric transducer having a resonant frequency centred on the second harmonic of said acoustic emission. 114.-. (canceled)15. A process to mitigate the unwanted popcorn formation of a cross-linked polymer having internal mechanical strain comprising the steps of:a) providing an installation in which unwanted popcorn formation of a cross-linked polymer may occur, with at least one resonant piezo electric transducer being attached outside of the installation;b) counting the acoustic emissions generated by the cross-linked polymer formation originating by the sudden break of the polymer with the at least one resonant piezo electric transducer and comparing the number of acoustic emissions counted per unit of time with at least one predefined threshold; andc) intervening on the installation in order to limit the unwanted popcorn formation of a cross-linked polymer when the number of acoustic emissions counted per unit of time of step b) is higher than the at least one predefined threshold;characterized in that the step of counting the acoustic emissions is done by detecting the second harmonic of the acoustic emissions.16. The process according to characterized in that the step b) of counting the acoustic emissions includes monitoring the increase of the number of acoustic emissions counted per unit of time.17. The process according to wherein the resonant frequency claim 15 , V/μbar claim 15 , calibrated with ASTM E976 claim 15 , of the resonant piezo electric transducer is in the range of 140 to 180 kHz.18. The process according to wherein the resonant piezo electric transducer measures the ...

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Номер записи: 91

01-05-2014 дата публикации

METHOD FOR DETECTING DEFECTS IN TREATING IRON COMPONENTS

Номер: US20140116141A1

Автор: RHODES George W.

Принадлежит:

A method of testing a treating iron component for the presence of a defect in structural integrity is presented. The treating iron component is subjected to test conditions of hydrostatic pressure. Test acoustic emission from the treating iron component while under the test conditions can be detected by at least one acoustic sensor and compared to standard acoustic emission detected by subjecting a similar non-defective treating iron component to the same test conditions of hydrostatic pressure. An increase in the test acoustic emission compared to the standard acoustic emission indicates the presence of a defect in the structural integrity of the treating iron component. 1. A method of testing a treating iron component for the presence of a defect in structural integrity , the method comprising:subjecting the treating iron component to test conditions of hydrostatic pressure;detecting test acoustic emission from the treating iron component under said test conditions, wherein the test acoustic emission is detected by at least one acoustic sensor; andcomparing the test acoustic emission to standard acoustic emission detected by subjecting a substantially identical non-defective treating iron component to the test conditions of hydrostatic pressure;wherein an increase in the test acoustic emission compared to the standard acoustic emission indicates the presence of a defect in the structural integrity of the treating iron component.2. The method of claim 1 , wherein the at least one acoustic sensor is attached to the treating iron component.3. The method according to wherein subjecting the treating iron component to test conditions of hydrostatic pressure comprises:subjecting the treating iron component to at least one predetermined hydrostatic pressure level; andmaintaining each said hydrostatic pressure level for a predetermined time interval.4. The method according to wherein detecting the test acoustic emission comprises detecting one or more test acoustic events ...

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Номер записи: 92

05-02-2015 дата публикации

DECODING PIN LOCKS

Номер: US20150033861A1

Автор: Nedwell Jeremy

Принадлежит:

In order to determine the particular cut possessed by a tumbler of a mechanical lock, the tumbler is stimulated with mechanical energy. The vibrational response of the tumbler is detected, and the detected response is used in determining which cut of the plurality of possible cuts the tumbler possesses. The cut of a lock tumbler is defined by its shape and/or size. For example, in the case of a pin-tumbler lock, the cut of a pin is defined by its length. Different cuts of tumbler will therefore exhibit different vibrational responses to stimulation by mechanical energy, and these different vibrational responses can be used to determine which cut the tumbler possesses, for example by comparing with the vibrational responses of real or modeled tumblers with known cuts. The response may be detected while the tumbler is being stimulated, and the responses to different frequencies of stimulation may be detected and processed. 123-. (canceled)24. A method of determining a particular cut possessed by a tumbler of a mechanical lock , the particular cut being one of a plurality of possible cuts , the method comprising the steps of:stimulating the tumbler with at least two frequencies of mechanical energy so that the tumbler vibrates;detecting the vibrational response of the tumbler to each of the stimulation frequencies; andprocessing the detected response in determining which cut of the plurality of possible cuts the tumbler possesses.25. A method as claimed in claim 24 , wherein:the response is detected while the tumbler is being stimulated.26. A method as claimed in claim 24 , wherein:the tumbler is stimulated at least two discrete stimulation frequencies in succession.27. A method as claimed in claim 24 , wherein:the tumbler is stimulated at a stimulation frequency which is swept substantially continuously between two values.28. A method as claimed in claim 24 , wherein:the tumbler is stimulated at least two different stimulation frequencies simultaneously.29. A method ...

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Номер записи: 93

17-02-2022 дата публикации

SYSTEM AND METHOD FOR THE ACOUSTIC DETECTION OF CRACKS IN A SEMICONDUCTOR SUBSTRATE

Номер: US20220050083A1

Автор: NAGLER Oliver, UNTERREITMEIER Marianne

Принадлежит: INFINEON TECHNOLOGIES AG

A system and method for the acoustic detection of cracks in a semiconductor substrate is disclosed. In one example, the system includes a force generating unit configured to apply a force onto the semiconductor substrate, a detector unit comprising a resonating indenter and an acoustic emission sensor coupled to the resonating indenter, and an evaluation unit configured to evaluate acoustic signals detected by the detector unit and configured to determine whether a crack has occurred based on the detected signals. The resonating indenter is configured to contact the semiconductor substrate at a lateral distance from the force generating unit, and wherein the force generating unit and the resonating indenter are configured to contact the semiconductor substrate on the same side. 1. A system for the acoustic detection of cracks in a semiconductor substrate , the system comprising:a force generating unit configured to press down onto a semiconductor substrate and thereby apply a force onto the semiconductor substrate;a detector unit comprising a resonating indenter and an acoustic emission sensor coupled to the resonating indenter; andan evaluation unit configured to evaluate acoustic signals detected by the detector unit and configured to determine, whether a crack has occurred based on the detected signals,wherein the resonating indenter is configured to contact the semiconductor substrate at a lateral distance from the force generating unit, andwherein the force generating unit and the resonating indenter are configured to contact the semiconductor substrate on the same side.2. The system of claim 1 , wherein the force generating unit comprises a probe card of a testing equipment for electrical testing claim 1 , or a bondhead of a wire bonding equipment claim 1 , or a saw of a dicing equipment.3. The system of claim 1 , further comprising:one or more additional detector units, wherein the resonating indenters of the detector units are configured to contact the ...

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Номер записи: 94

05-02-2015 дата публикации

Integration of Digital Image Correlation with Acoustic Emission

Номер: US20150035950A1

Автор: Bartoli Ivan, Kontsos Antonios, Vanniamparambil Prashanth Abraham

Принадлежит: DREXEL UNIVERSITY

An inventive approach is disclosed to integrate Digital Image Correlation (DIC) with the Acoustic Emission method that may be used for structural health monitoring and assessment of critical structural components in civil, mechanical, and aerospace industries. The inventive approach relies on passively recording acoustic emission across the specimen being tested and activating the DIC cameras automatically to measure deformation on the specimen's surface. The resulting acousto-optic system can be used to determine damage initiation, progressive damage development, identify critical regions and make lifetime predictions of the tested specimen. 1. A nondestructive method of determining the structural integrity of a specimen as a load is applied to the specimen , the method comprising the steps of:attaching at least one acoustic sensor to the specimen;applying a contrasting pattern on the surface of the specimen;calibrating a pair of stereoscopic cameras at the contrasting pattern;passively recording acoustic stress waves propagating in the specimen in an Acoustic Emission (AE) system electronically coupled to the at least one acoustic sensor;triggering operation of the cameras by the AE system;measuring deformation in the specimen based on load-induced movement of the contrasting pattern in a Digital Image Correlation (DIC) system, the DIC system being electronically coupled to the cameras; andcorrelating acoustic stress waves and strain data to determine the structural health of the specimen.2. The method according to claim 1 , further comprising claim 1 , after calibrating the cameras at the contrasting pattern claim 1 , applying a load to the specimen.3. The method according to claim 2 , wherein the load applying step comprises attaching the specimen to a load applying test stand.4. The method according to claim 3 , wherein the at least one acoustic sensor and the cameras are electrically connected to the test stand.5. The method according to claim 4 , wherein a ...

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Номер записи: 95

31-01-2019 дата публикации

TOOTHING ARRANGEMENT AND METHOD FOR DETERMINING CHARACTERISTICS OF A TOOTHING ARRANGEMENT

Номер: US20190033168A1

Автор: BRUECKNER Christoph, DILLER Wolfgang, STICH Sebastian

Принадлежит: BESTSENS AG

The invention relates to a toothing arrangement, having at least one first element () which has a toothing (), and having at least one second element () which interacts with the first element (). According to the invention, at least one receiver () is provided which is arranged on the first or on the second element () and which serves for receiving acoustic waves (SAW) which are incited in the first and/or second element (), wherein information regarding characteristics of the toothing arrangement () can be determined through evaluation of a signal which is generated by the receiver () upon receipt of the acoustic waves (SAW). 211. The gearing arrangement as claimed in claim 1 , characterized in that the first element () is a gear wheel.311. The gearing arrangement as claimed in or claim 1 , characterized in that the first element () is a ring gear claim 1 , in particular a planetary transmission claim 1 , a bevel gear claim 1 , a crown gear claim 1 , a hybrid gear or an elliptical gear.412121. The gearing arrangement as claimed in one of the preceding claims claim 1 , characterized in that the second element () likewise has a gearing ().512. The gearing arrangement as claimed in claim 4 , characterized in that the second element () is a gear rack.611121112. The gearing arrangement as claimed in or claim 4 , characterized in that tooth flanks of the gearings of the first and the second element ( claim 4 , ) extend in a curve or at an angle to a movement direction of the first or the second element ( claim 4 , ).71112. The gearing arrangement as claimed in one of to claim 4 , characterized in that the gearings of the first and the second element ( claim 4 , ) form a cycloidal gearing or involute gearing.821112. The gearing arrangement as claimed in one of the preceding claims claim 4 , characterized by at least one transmitter () for exciting acoustic waves (SAW) in the first and/or second element ( claim 4 , ).921112. The gearing arrangement as claimed in claim 8 , ...

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Номер записи: 96

31-01-2019 дата публикации

TAMPER-SENSITIVE RESONATOR AND SENSOR FOR DETECTING COMPARTMENT OPENINGS

Номер: US20190033262A1

Автор: Clingman Dan J., Tanielian Minas H.

Принадлежит:

According to various embodiments, a system for, and method of, detecting the opening of a lid of a compartment constructed of a rigid material. The system includes a resonator disposed on a wall of the compartment, where the resonator has a resonant frequency of mechanical vibration. The system also includes a member disposed on the lid of the compartment and positioned to perturb the resonator upon opening the lid, such that opening the lid causes the resonator to mechanically vibrate at the resonant frequency. The system also includes an electronic sensor disposed on the compartment to detect vibrations at the resonant frequency. The system also includes an interface communicatively coupled to the electronic sensor and configured to provide a signal indicating lid opening data representing at least one opening of the lid. 1. A system for detecting opening of a lid of a compartment constructed of a rigid material , the system comprising:a resonator disposed on a wall of the compartment, wherein the resonator has a resonant frequency of mechanical vibration;a member disposed on the lid of the compartment and positioned to perturb the resonator upon opening the lid, whereby opening the lid causes the resonator to mechanically vibrate at the resonant frequency;an electronic sensor disposed on the compartment to detect vibrations at the resonant frequency; andan interface communicatively coupled to the electronic sensor and configured to provide a signal indicating lid opening data representing at least one opening of the lid.2. The system of claim 1 , wherein the compartment is an aircraft compartment.3. The system of claim 1 , wherein the resonator is positioned on an inside wall of the compartment.4. The system of claim 1 , wherein the sensor is positioned outside of the compartment.5. The system of claim 1 , wherein the interface comprises a radio frequency transmitter configured to send a radio frequency signal indicating an opening of the lid.6. The system of ...

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Номер записи: 97

31-01-2019 дата публикации

IDENTIFYING STRUCTURAL DEFECT GEOMETRIC FEATURES FROM ACOUSTIC EMISSION WAVEFORMS

Номер: US20190033263A1

Автор: Bao Jingjing, Bhuiyan Md Yeasin, Giurgiutiu Victor, Poddar Banibrata

Принадлежит: UNIVERSITY OF SOUTH CAROLINA

The current disclosure determines if structural faults exist and extracts geometric features of the structural faults from acoustic emission waveforms, such as crack length and orientation, and can evaluate the structural faults online, during normal operation conditions. 1. A method for identifying features of a fatigue crack , comprising:analyzing emission waves from a fatigue crack;applying external excitation to the fatigue crack;capturing at least one echo emanating from the fatigue crack caused by the external excitation;generating at least one secondary emission wave that emanates from the fatigue crack; andanalyzing amplitude and frequency of the at least one secondary emission wave.2. The method of claim 1 , further comprising identifying at least one geometric feature of the fatigue crack from analysis of the at least one secondary emission wave.32. The method of claim 1 , further comprising identifying fatigue crack length and crack tip locations as part of the at least one geometric feature.42. The method of claim 1 , wherein frequency dependent patterns in polar plots identify the at least one geometric feature of the fatigue crack.5. The method of claim 1 , further comprising establishing a library of signal signatures paired with fatigue crack geometries.6. The method of claim 5 , wherein modeling and scanning laser vibrometry are used in association with time signal analysis are used to establish the library of signal signatures.7. Creating a library of acoustic emission waveforms linked to crack geometric features comprising:generating structural vibrations in a test material;generating excitation signals and applying same to the test material;collecting first acoustic emission signals generated by the test material;measuring surface vibration and displacement in the test material;obtaining a frequency response of the test material to the excitation signals;extracting surface relative displacement to determine multiple candidate frequencies for ...

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Номер записи: 98

31-01-2019 дата публикации

SYSTEM AND METHOD FOR DETECTING ABNORMAL OPERATING CONDITION OF GENSET POWER SYSTEM COMPONENT

Номер: US20190033843A1

Автор: Converse Perry D, Dong Zhaoxu, DUST Maurice, Hu Xuefei, Sun Yong, Zhang Yanchai

Принадлежит:

A system for detecting an abnormal operating condition of a component of a genset power system, which includes an engine drivingly coupled to a generator, is provided. The system also includes at least one vibration sensor configured to measure vibrations of the genset power system, and a controller. The controller is programmed to receive vibration sensor data from the vibration sensor, and process the vibration sensor data using a modeling software to generate simulated data. The simulated data is filtered using frequency-based filtering to obtain filtered data, and frequency domain information of the filtered data is compared to threshold data to identify the abnormal operating condition of the component. 1. A system for detecting an abnormal operating condition of a component of a genset power system , including:the genset power system including an engine drivingly coupled to a generator;at least one vibration sensor configured to measure vibrations of the genset power system; and receive vibration sensor data from the vibration sensor;', 'process the vibration sensor data using a modeling software to generate simulated data;', 'filter the simulated data using frequency-based filtering to obtain filtered data; and', 'compare frequency domain information of the filtered data to threshold data to, 'a controller programmed toidentify the abnormal operating condition of the component.2. The system of claim 1 , wherein the controller is further programmed to identify the abnormal operating condition as an abnormal operating condition of a bearing of the genset power system based on the frequency domain information claim 1 , wherein the abnormal operating condition includes wear or failure.3. The system of claim 2 , wherein the at least one vibration sensor includes a first sensor mounted on a front generator bearing bracket of the generator claim 2 , which is identified as a first mounting location sensitive to the abnormal operating condition claim 2 , and a second ...

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Номер записи: 99

30-01-2020 дата публикации

SYSTEMS AND METHODS FOR ACOUSTIC EMISSION MONITORING OF SEMICONDUCTOR DEVICES

Номер: US20200033297A1

Автор: NEGRI Ori, RUDYK Eduard, SHAUL Gal, YOSKOVITZ Saar

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A system for monitoring and identifying states of a semiconductor device, the system including at least one acoustic sensor for sensing acoustic emission emitted by at least one semiconductor device operating at a voltage of less than or equal to 220 V, the at least one acoustic sensor outputting at least one acoustic emission signal and a signal processing unit for receiving the at least one acoustic emission signal from the at least one acoustic sensor and for analyzing the at least one acoustic emission signal, the signal processing unit providing an output based on the analyzing, the output being indicative at least of whether the at least one semiconductor device is in an abnormal operating state with respect to a normal operating state of the semiconductor device. 1. A system for monitoring and identifying states of a semiconductor device , the system comprising:at least one acoustic sensor for sensing acoustic emission emitted by at least one semiconductor device operating at a voltage of less than or equal to 220 V, said at least one acoustic sensor outputting at least one acoustic emission signal; anda signal processing unit for receiving said at least one acoustic emission signal from said at least one acoustic sensor and for analyzing said at least one acoustic emission signal,said signal processing unit providing an output based on said analyzing, said output being indicative at least of whether said at least one semiconductor device is in an abnormal operating state with respect to a normal operating state of said semiconductor device.2. A system according to claim 1 , wherein said normal operating state comprises a healthy state and said abnormal operating state comprises a defective state claim 1 ,3. A system according to claim 1 , wherein said normal operating state comprises a legitimate state and said abnormal operating state comprises an illegitimate state due to malicious interference in at least one of said at least one semiconductor device and ...

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Номер записи: 100