Imaging of three-dimensional crack open/closed distribution by nonlinear ultrasonic phased array based on fundamental wave amplitude difference

Yoshikazu Ohara, Hiromichi Nakajima, Sylvain Haupert, Toshihiro Tsuji, Tsuyoshi Mihara

研究成果: Article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号SKKB01
ジャーナルJapanese journal of applied physics
59
DOI
出版ステータスPublished - 2020 7 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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