文献类型：期刊文献

中文题名：Time-Domain Second-Harmonic Generation of Primary Lamb-Wave Propagation in an Elastic Plate

英文题名：Time-Domain Second-Harmonic Generation of Primary Lamb-Wave Propagation in an Elastic Plate

作者：Deng Ming-Xi[1];Xiang Yan-Xun[2];Liu Liang-Bing[1]

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

年份：2011

卷号：28

期号：7

中文期刊名：Chinese Physics Letters

外文期刊名：CHINESE PHYSICS LETTERS

收录：CSTPCD;;EI(收录号：20220711666139);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000293141800052)】；CSCD:【CSCD2011_2012】；

基金：Supported by the National Natural Science Foundation of China under Grant Nos 10974256 and 11004056.

语种：英文

中文关键词：matching;harmonic;Elastic;

外文关键词：Harmonic analysis - Light velocity - Nonlinear optics - Surface waves - Ultrasonic waves - Wave propagation

摘要：We present an experimental observation of the generation of the time-domain second harmonic by propagation of the primary Lamb-wave tone-burst.For a case where the phase velocity matching between the primary and the double frequency Lamb waves is satisfied but the group velocity matching between them is not,our observation clearly shows that the duration of the time-domain second-harmonic tone-burst,as well as its integrated amplitude,increases with the increasing propagation distance.This experimental result is consistent with the theoretical prediction and demonstrates that group velocity matching is not absolutely necessary for the generation of the cumulative time-domain second harmonic by primary Lamb-wave propagation.
We present an experimental observation of the generation of the time-domain second harmonic by propagation of the primary Lamb-wave tone-burst. For a case where the phase velocity matching between the primary and the double frequency Lamb waves is satisfied but the group velocity matching between them is not, our observation clearly shows that the duration of the time-domain second-harmonic tone-burst, as well as its integrated amplitude, increases with the increasing propagation distance. This experimental result is consistent with the theoretical prediction and demonstrates that group velocity matching is not absolutely necessary for the generation of the cumulative time-domain second harmonic by primary Lamb-wave propagation.