Laser-Generated Nonlinear Rayleigh and Lamb Waves, with Applications in Nondestructive Testing

9413304哈密尔顿这项研究将从理论和实验上研究激光产生的瑞利波和兰姆波的非线性效应。建立了各向同性弹性固体中非线性瑞利波传播的综合理论模型。一般的理论方法将扩展到包括平板中的兰姆波。这项研究的一个主要焦点是识别和描述可用于无损检测的效应，例如，确定描述各向同性固体中的非线性效应的三阶弹性常数。在这项工作的同时，莫斯科普通物理研究所将使用激光产生的非线性瑞利波和兰姆波进行实验。***

9413304 Hamilton This research will investigate theoretically and experimentally nonlinear effects in laser generated Rayleigh and Lamb waves. A comprehensive theoretical model for nonlinear Rayleigh wave propagation in an isotropic elastic solid will be developed. The general theoretical approach will be extended to include Lamb waves in plates. A main focus of the study is identification and description of effects that can be exploited in nondestructive testing, for example, determination of the third-order elastic constants that describe nonlinear effects in isotropic solids. In parallel with this work, experiments will be carried out using laser-generated nonlinear Rayleigh and Lamb waves at the General Physics Institute of Moscow. ***