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Browse Journals & Magazines > Applied Physics Letters ...> Volume:89 Issue:17 Help

Surface breaking crack evaluation with photorefractive quantum wells and laser-generated Rayleigh waves

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4 Author(s)
Matsuda, Youichi ; National Metrology Institute of Japan (NMIJ), AIST, Central 3, Tsukuba, 305-8563, Japan ; Nakano, Hidetoshi ; Nagai, Satoshi ; Hiratsuka, Hajime

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2364579 

An adaptive laser ultrasound system using optical two-wave mixing technique with photorefractive quantum wells is developed for crack characterization in noisy environments. AlGaAs/GaAs photorefractive multiple quantum wells featuring a quick response time of 9.1 μs cancel disturbances below 100 kHz. A laser-generated Rayleigh wave in a thermoelastic regime is used for crack characterization. The positions and depths of artificial cracks, 3 and 5 mm in depth and 0.2 mm in width, were evaluated. The crack orientations were also determined using a shear wave that was generated through mode conversion of a Rayleigh wave at the crack tip.

Published in:
Applied Physics Letters  (Volume:89 ,  Issue: 17 )

Date of Publication: Oct 2006

Page(s):
171902 - 171902-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2364579
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Oct 2006

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