A numerical study of the interaction of laser-generated circumferential wave with defect on hollow cylinder

被引：4
|
作者：
Zhao, Yan [1 ,2 ]
Shen, Zhonghua [1 ]
Lu, Jian [1 ]
Ni, Xiaowu [1 ]
Cui, Yiping [2 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China
[2] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2012年 / 44卷 / 02期
基金：
中国博士后科学基金;
关键词：
Circumferential waves; Defect; Laser ultrasonic; ULTRASONICS; REFLECTION; SURFACE; NOTCHES; PIPES;
D O I：
10.1016/j.optlastec.2011.08.004
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A finite element method is used to investigate the laser-induced circumferential waves on a hollow cylinder with a surface defect. After a control numerical experiment for correctness verification, the method is used to simulate the circumferential waves on hollow cylinder having a defect with different source-defect angles, depths, and widths. The results show that the existence of the defect will generate a bipolar waveform between the S(0) mode and the A(0) mode in the circumferential waves, and its emerging time and amplitude linearly depend on the source-defect angle and the depth of defect, respectively. Moreover, we also find that the width of defect has obvious influence on the circumferential waves. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：407 / 411
页数：5
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