Interaction of laser generated ultrasonic waves with wedge-shaped samples

被引：14

作者：

Edwards, R. S. ^{[1
]}

Dutton, B. ^{[1
]}

Clough, A. R. ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 18期

基金：

欧洲研究理事会;

关键词：

SURFACE-BREAKING CRACKS; RAYLEIGH-WAVES; SCATTERING; ANGLE;

D O I：

10.1063/1.4711021

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Wedge-shaped samples can be used as a model of acoustic interactions with samples ranging from ocean wedges, to angled defects such as rolling contact fatigue, to thickness measurements of samples with non-parallel faces. We present work on laser generated ultrasonic waves on metal samples; one can measure the dominant Rayleigh-wave mode, but longitudinal and shear waves are also generated. We present calculations, models, and measurements giving the dependence of the arrival times and amplitudes of these modes on the wedge apex angle and the separation of generation and detection points, and hence give a measure of the wedge characteristics. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711021]

引用

页数：4

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