TY - JOUR
T1 - Imaging of three-dimensional crack open/closed distribution by nonlinear ultrasonic phased array based on fundamental wave amplitude difference
AU - Ohara, Yoshikazu
AU - Nakajima, Hiromichi
AU - Haupert, Sylvain
AU - Tsuji, Toshihiro
AU - Mihara, Tsuyoshi
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI (19K21910). The authors thank AOS for the support of the phased array controller.
Publisher Copyright:
© 2020 The Japan Society of Applied Physics.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - 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.
AB - 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.
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U2 - 10.35848/1347-4065/ab79ea
DO - 10.35848/1347-4065/ab79ea
M3 - Article
AN - SCOPUS:85084192315
SN - 0021-4922
VL - 59
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
M1 - SKKB01
ER -