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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 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 3. Отображено 3.
11-07-2023 дата публикации

Real-time prediction method for internal gap state of laser metal additive deposition

Номер: CN116408462A
Автор: YIN MING, PENG KE, ZHUO SHIMING, XIE LUOFENG, ZHANG YUHANG, LI WEI, XIANG JIN, DING XINYU
Принадлежит:

The invention belongs to the technical field of laser metal additive manufacturing, and particularly discloses a laser metal additive deposition internal gap state real-time prediction method, which comprises the following steps of: 1, acquiring multiple groups of single-channel multi-layer molten pool optical images under different process parameters, processing the optical images into optical image samples, and dividing the optical image samples into a training set and a test set; 2, establishing a deep learning porosity prediction model; 3, inputting the training set into a deep learning porosity prediction model for training; 4, inputting the test set into the trained deep learning porosity prediction model for verification to obtain a final deep learning porosity prediction model; and 5, inputting the real-time data into the final deep learning porosity prediction model to carry out real-time prediction on the internal pore state. According to the method, the optical molten pool image ...

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Номер записи: 1
11-04-2023 дата публикации

Prediction method for residual stress of laser cladding deposited part

Номер: CN115952723A
Автор: YIN MING, LI WEI, XIANG JIN, ZHUO SHIMING, ZHANG YUHANG, PENG KE, DING XINYU
Принадлежит:

The invention belongs to the technical field of laser cladding, and particularly discloses a method for predicting residual stress of a laser cladding deposited part, which comprises the following steps of: 1, establishing a temperature field model, and inputting predicted material attributes and setting temperature boundary conditions in the temperature field model; 2, simulating a laser cladding deposition process by adopting a life-death unit technology, calculating a temperature field, and introducing the change of solid-liquid phase change latent heat in the calculation of the temperature field; 3, converting the temperature field model into a stress field model, and substituting the calculation result of the temperature field into the stress field model for phase calculation; and 4, calculating to obtain the mixed phase average linear expansion coefficient and the mixed phase average yield strength which influence the residual stress according to a phase calculation result, so as ...

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Номер записи: 2
23-06-2023 дата публикации

Laser additive manufacturing zone control method based on model-free adaptive iterative learning

Номер: CN116275124A
Автор: YIN MING, ZHANG YUHANG, LI WEI, XIANG JIN, ZHUO SHIMING, PENG KE, DING XINYU
Принадлежит:

The invention belongs to the technical field of metal material additive manufacturing, and discloses a laser additive manufacturing partition control method based on model-free adaptive iterative learning, which comprises the following steps: layering a target to be printed along the height direction, and then dividing each layer into N sections of non-overlapping areas according to the scanning direction; and finally, process parameters of each area are controlled based on a model-free adaptive iterative learning control algorithm so as to realize layered and partitioned control of laser additive manufacturing. According to the method, each target layer to be printed is divided into a plurality of non-overlapped areas in the scanning direction, the process parameters of each area are adaptively controlled according to the historical information obtained from the previous layer in the process, and the potential instability of the deposition and scanning directions in the laser additive ...

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Номер записи: 3