文献类型：期刊文献

中文题名：Influence of Change in Inner Layer Thickness of Composite Circular Tube on Second-Harmonic Generation by Primary Circumferential Ultrasonic Guided Wave Propagation

英文题名：Influence of Change in Inner Layer Thickness of Composite Circular Tube on Second-Harmonic Generation by Primary Circumferential Ultrasonic Guided Wave Propagation

作者：Li, Ming-Liang[1];Deng, Ming-Xi[1];Gao, Guang-Jian[1];Chen, Han[1];Xiang, Yan-Xun[2]

机构：[1]Logist Engn Univ, Dept Phys, Chongqing 401331, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：34

期号：6

中文期刊名：Chinese Physics Letters

外文期刊名：CHINESE PHYSICS LETTERS

收录：CSTPCD;;EI(收录号：20220711654952);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000403271700016)】；CSCD:【CSCD2017_2018】；

基金：Supported by the National Natural Science Foundation of China under Grant Nos 11474361, 11474093 and 11274388.

语种：英文

外文关键词：Guided electromagnetic wave propagation - Nonlinear optics - Efficiency - Ultrasonic waves

摘要：The influence of change in inner layer thickness of a composite circular tube is investigated on second-harmonic generation （SHG） by primary circumferential ultrasonic guided wave （CUGW） propagation. Within a second- order perturbation approximation, the nonlinear effect of primary CUOW propagation is treated as a second-order perturbation to its linear response. It is found that change in inner layer thickness of the composite circular tube will influence the efficiency of SHG by primary CUGW propagation in several aspects. In particular, with change in inner layer thickness, the phase velocity matching condition that is originally satisfied for the primary and double-frequency CUGW mode pair selected may no longer be satisfied. This will remarkably influence the efficiency of SHG by primary CUGW propagation. Theoretical analyses and numerical results show that the effect of SHG by primary CUGW propagation is very sensitive to change in inner layer thickness, and it can be used to accurately monitor a minor change in inner layer thickness of the composite circular tube.
The influence of change in inner layer thickness of a composite circular tube is investigated on second-harmonic generation (SHG) by primary circumferential ultrasonic guided wave (CUGW) propagation. Within a second-order perturbation approximation, the nonlinear effect of primary CUGW propagation is treated as a second-order perturbation to its linear response. It is found that change in inner layer thickness of the composite circular tube will influence the efficiency of SHG by primary CUGW propagation in several aspects. In particular, with change in inner layer thickness, the phase velocity matching condition that is originally satisfied for the primary and double-frequency CUGW mode pair selected may no longer be satisfied. This will remarkably influence the efficiency of SHG by primary CUGW propagation. Theoretical analyses and numerical results show that the effect of SHG by primary CUGW propagation is very sensitive to change in inner layer thickness, and it can be used to accurately monitor a minor change in inner layer thickness of the composite circular tube.