期刊
JAPANESE JOURNAL OF APPLIED PHYSICS
卷 59, 期 -, 页码 -出版社
IOP Publishing Ltd
DOI: 10.35848/1347-4065/ab79ea
关键词
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资金
- JSPS KAKENHI [19K21910]
- Grants-in-Aid for Scientific Research [19K21910] Funding Source: KAKEN
We investigated the imaging capability of fixed-voltage fundamental wave amplitude difference (fixed-voltage FAD), which is one of the nonlinear ultrasonic phased array imaging techniques, for three-dimensional crack open/closed distribution. We fabricated two fatigue crack specimens with different thicknesses, which were selected to create different open/closed distributions in them. As a result of applying fixed-voltage FAD with mechanical scans to the thick and thin specimens, the difference in the crack open/closed distribution was successfully visualized. The results are in good agreement with fracture mechanics. Thus, it was demonstrated that fixed-voltage FAD is useful not only for nondestructive testing for aging infrastructures but also for the progress in fracture mechanics. (C) 2020 The Japan Society of Applied Physics
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