A novel technique for visualizing ultrasonic waves in general solid media by pulsed laser scan

Shigeki Yashiro, J. Takatsubo, H. Miyauchi, N. Toyama

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)

Abstract

This study proposes a novel technique to visualize ultrasonic waves propagated in a general solid medium. A specimen was scanned by a pulsed laser for generation of ultrasound, and the propagated waves were received by a fixed transducer. This technique then provided a snapshot of traveling waves based on the reversibility for the wave propagation, which is confirmed in this paper. We experimentally and numerically investigated and visualized the wave propagation in a steel plate with a slit. Furthermore, we demonstrated inspection of an elbow pipe with an artificial defect, as an application of the proposed technique to a structural component. Non-contact laser scanning for ultrasound excitation enabled us to inspect a wide area of an arbitrarily shaped object. The distinguishing advantages of this technique were determined to be well-suited to the quick and easy wide-range inspection of real structures.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalNDT and E International
Volume41
Issue number2
DOIs
Publication statusPublished - Mar 1 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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