and lack of integrated analysis from waveform features and image features in using the time-of-flight
diffraction(TOFD)data for weld defect recognition
a deep learning fusion model(DLFM)and a weld defect recognition method are proposed. Based on the analyses of TOFD detection principle and weld defect detection data characteristics
a defect feature representation method considering waveform data and image data is set up
and the defect standard data set is established. Combining waveform sequence data analysis module based on time convolution network(TCN)
image data analysis module based on convolutional neural network(CNN)and feature adaptive fusion classification module
the DLFM with pattern classification is constructed. A case study of TOFD weld defect recognition is conducted to illustrate the work. The results show that the proposed DLFM has higher defect recognition rate than the method based on CNN
TCN or CNN-TCN. The proposed method improves the traditional deep learning models
and can be applied to the other pattern recognition fields with stronger universality.
关键词
Keywords
references
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