Interaction of shear horizontal bend (SHB) guided mode with defects

被引：25
|
作者：
Manogharan, Prabhakaran [1 ,2 ]
Yu, Xudong [3 ]
Fan, Zheng [3 ]
Rajagopal, Prabhu [1 ,2 ]
机构：
[1] Indian Inst Technol, Ctr Nondestruct Evaluat, Madras 600036, Tamil Nadu, India
[2] Indian Inst Technol, Dept Mech Engn, Madras 600036, Tamil Nadu, India
[3] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
来源：
NDT & E INTERNATIONAL | 2015年 / 75卷
关键词：
Feature-guided modes; Bend-guided SH waves; Wave scattering; THROUGH-THICKNESS CRACK; LAMB WAVE SCATTERING; ELASTIC-WAVES; ULTRASONIC-WAVES; TRAPPED MODES; THIN PLATES; PROPAGATION; DIFFRACTION; INCIDENT;
D O I：
10.1016/j.ndteint.2015.06.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The authors have recently reported on the attractive properties of shear-horizontal type feature guided (SHB) waves for the inspection of 900 plate bends. Further to this, here the interaction of the SHB mode with transverse and longitudinal defects in the bend region is studied using 3D finite element simulations validated by experiments. Trends are discussed in light of the underlying wave mechanics principles. The results show that the SHB mode yields improved through-thickness defect resolution capabilities as compared to regular plate guided SH waves in view of mode confinement and higher frequencies used. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：39 / 47
页数：9
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