Xing Wang, Lei Gao, Yan Wang, Haitao Wang. Design of a hybid ultrasound and digital holography imaging system for detection of internal micro-defects[J]. Infrared and Laser Engineering, 2020, 49(7): 20190518
- Infrared and Laser Engineering
- Vol. 49, Issue 7, 20190518 (2020)
Fig. 1. Overall design of the system
Fig. 2. Schematic diagram of defect detection
Fig. 3. Design of the digital holography subsystem
Fig. 4. Schematic of the synchronous control system
Fig. 5. Schematic diagram of system timing
Fig. 6. Designed digital holography subsystem
Fig. 7. Test sample
Fig. 8. Synchronous control timing diagram: (a)t 1; (b)t 2
Fig. 9. Ultrasonic wavefields morphology of aluminum sheet without defect: (a)t 1; (b)t 2
Fig. 10. Ultrasonic wavefields surface topography at t 1
Fig. 11. Extraction of one-dimensional data
Fig. 12. Data comparison at time t 1
Fig. 13. Ultrasonic wavefields surface topography at t 1
Fig. 14. Data comparison at time t 2
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Table 1. Maximum amplitude of dynamic ultrasonic wavefields
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