Reflection of Lamb waves obliquely incident on the free edge of a plate

被引：57

作者：

Santhanam, Sridhar ^{[1
]}

Demirli, Ramazan ^{[2
]}

机构：

[1] Villanova Univ, Dept Mech Engn, Villanova, PA 19085 USA

[2] Villanova Univ, Ctr Adv Commun, Villanova, PA 19085 USA

来源：

ULTRASONICS | 2013年 / 53卷 / 01期

基金：

美国国家科学基金会;

关键词：

Lamb-waves; Oblique; Incidence; Free-edge; Reflection; COMPOSITE STRUCTURES; MODE CONVERSION; GUIDED-WAVES; SCATTERING;

D O I：

10.1016/j.ultras.2012.06.011

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The reflection of obliquely incident symmetric and anti-symmetric Lamb wave modes at the edge of a plate is studied. Both in-plane and Shear-Horizontal (SH) reflected wave modes are spawned by an obliquely incident in-plane Lamb wave mode. Energy reflection coefficients are calculated for the reflected wave modes as a function of frequency and angle of incidence. This is done by using the method of orthogonal mode decomposition and by enforcing traction free conditions at the plate edge using the method of collocation. A PZT sensor network, affixed to an Aluminum plate, is used to experimentally verify the predictions of the analysis. Experimental results provide support for the analytically determined results. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：271 / 282

页数：12

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