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

被引：24

作者：

Matsuda, Youichi

Nakano, Hidetoshi

Nagai, Satoshi

Hiratsuka, Hajime

机构：

[1] Natl Metrol Inst Japan, Tsukuba, Ibaraki 3058563, Japan

[2] Kubota Corp, Chuo Ku, Tokyo 1038310, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 17期

关键词：

D O I：

10.1063/1.2364579

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 mu s 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. (c) 2006 American Institute of Physics.

引用

页数：3

共 11 条

[1] DETECTION OF ULTRASONIC MOTION OF A SCATTERING SURFACE BY 2-WAVE MIXING IN A PHOTOREFRACTIVE GAAS CRYSTAL [J].