Li ZHENG, Chuang LIU, Jiaojiao REN, Dandan ZHANG, Lijuan LI, Jisheng XU. Debonding Defect Identification Method for Multi-layer Bonded Structures Based on LDA-CPSO-SVM Optimization[J]. Acta Photonica Sinica, 2021, 50(12): 1212004
- Acta Photonica Sinica
- Vol. 50, Issue 12, 1212004 (2021)
Fig. 1. Design drawings of multilayer bonded structure samplesⅠand Ⅱ
Fig. 2. Experimental terahertz time domain spectral system
Fig. 3. Terahertz time domain waveform of different regions of multilayer adhesive structure
Fig. 4. Subject operating curves of different sample types
Fig. 5. Classification rate fitness curve of adhesive layer I data
Fig. 6. Classification rate fitness curve of adhesive layer data
Fig. 7. Terahertz single feature image of multi-bonded structural adhesive layer
Fig. 8. Imaging image of multi-bonded structural adhesive layer based on LDA-CPSO-SVM algorithm
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Table 1. Classification rate of different kernel function types
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