Transformation of body force generated by non-contact sources of ultrasound in an isotropic solid of complex shape into equivalent surface stresses
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- 作者：Bastien Clausse bastien.clausse@cea.fr" class="auth_mail" title="E-mail the corresponding author ; Alain Lhé ; mery ; alain.lhemery@cea.fr" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ultrasonic NDE ; Non-contact sources ; Elastic wave radiation ; Equivalent surface stress ; Differential and tensorial analyses
- 刊名：Wave Motion
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：60
- 期：Complete
- 页码：135-148
- 全文大小：872 K
文摘
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We develop a method to simulate dynamic body forces as equivalent surface stresses.
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Body forces are assumed to be confined at depths smaller than elastic wavelengths.
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The method handles arbitrary shaped surface through surface differential operators.
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Explicit formula of equivalent stress includes first and second order force moments.
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Formulas provide inputs to wave radiation models for non-contact ultrasonic sources.