Qiongying Kong, Bo Ye, Weiquan Deng, Chen Chen, Danhong Wang. Probability-Based Diagnostic Imaging Method of Fatigue Damage for Carbon Fiber Reinforced Plastic Based on ToF Damage Factor[J]. Laser & Optoelectronics Progress, 2021, 58(16): 1610002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 16, 1610002 (2021)
Fig. 1. Schematic diagram of the relative distance
Fig. 2. Flow chart of the probability-based diagnostic imaging method
Fig. 3. Schematic diagram and physical diagram of the specimen. (a) Schematic diagram;(b) physical diagram
Fig. 4. Time domain and frequency domain diagrams of the excitation signal. (a) Time domain diagram; b) frequency domain diagram
Fig. 5. Diagram of the damage scattered signal
Fig. 6. Hilbert transform modulus graph of the damage scattered signal
Fig. 7. Parameters of different damage factors. (a) Cross correlation damage factor; (b) energy damage factor; (c) ToF damage factor
Fig. 8. Probability-based diagnostic imaging results under different cycles. (a) Cross correlation damage factor; (b) energy damage factor; (c) ToF damage factor
Fig. 9. X-ray images of CFRP fatigue damage at different fatigue cycles. (a) L=10000; (b) L=70000; (c) L=90000
Fig. 10. Probability-based diagnostic imaging results under different cycles (threshold is 0.75). (a) Cross correlation damage factor; (b) energy damage factor; (c) ToF damage factor
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Table 1. Position coordinates of different PZT
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Table 2. Probability-based diagnostic imaging results of different damage factors
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