Paper Title:
Time of Flight Diffraction Method Using Laser Ultrasound for Noncontact Flaw Height Measurement
  Abstract

We developed a laser TOFD (Time of flight diffraction) algorithm which utilizes not only longitudinal wave but also shear wave. This algorithm made it possible to obtain accurate flaw depth without knowing the specimen velocity and probe distance previously. We constructed the laser TOFD system and applied it to estimate the slit depth of aluminum alloy plate. Time of flight of lateral wave, flaw tip diffraction waves and mode converted shear wave at flaw tip were used to estimate the slit depth using new algorithm.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
987-992
DOI
10.4028/www.scientific.net/KEM.261-263.987
Citation
T. Mihara, Y. Otsuka, H. Cho, K. Yamanaka, "Time of Flight Diffraction Method Using Laser Ultrasound for Noncontact Flaw Height Measurement", Key Engineering Materials, Vols. 261-263, pp. 987-992, 2004
Online since
April 2004
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Price
$32.00
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