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- W4387578596 abstract "Hydrogen attack is the major failure cause of hydrogen equipment breakdown maintenance. Especially, common problems like cracks frequently occur but are challenging to find while operating, presenting an issue for safety and production. In the process of hydrogen damage evolution, a method for defect state recognition is proposed in this paper. Acoustic emission (AE) technology is used for inspecting the entire hydrogen charging process. The characteristic parameters including the counts and duration of the AE signals are first preprocessed, and the current damage states such as the dislocation propagation, and the occurrence of cracks are identified. Then, a deep learning convolutional neural network is used to create a hydrogen defect recognition (HDR) model with the input of a short-time Fourier transform for the feature vector extraction of various damage status AE signals. Finally, the hydrogen defect recognition experiment revealed that HDR is better in classification accuracy at 98.37% due to dislocation propagation and cracks identification. The study can provide an online damage recognition approach for damage state early warning and evaluation to guarantee hydrogen equipment safety operation." @default.
- W4387578596 created "2023-10-13" @default.
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- W4387578596 date "2023-10-01" @default.
- W4387578596 modified "2023-10-14" @default.
- W4387578596 title "Hydrogen defect acoustic emission recognition by deep learning neural network" @default.
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- W4387578596 doi "https://doi.org/10.1016/j.ijhydene.2023.09.176" @default.
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