Identification of multiple cracks in a beam using natural frequencies

被引：93
|
作者：
Lee, Jinhee [1 ]
机构：
[1] Hongik Univ, Dept Mechanoinformat, Chochiwon 339701, Choongnam, South Korea
来源：
JOURNAL OF SOUND AND VIBRATION | 2009年 / 320卷 / 03期
关键词：
VIBRATION; LOCATION;
D O I：
10.1016/j.jsv.2008.10.033
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A simple method to identify multiple cracks in a beam is presented. The cracks are modeled as rotational springs and the forward problem is solved using the finite element method. The inverse problem is solved iteratively for the locations and sizes of the cracks using the Newton-Raphson method. Numerical examples are provided for the identification of triple cracks in a cantilever beam as well as double cracks. The detected crack locations and sizes are in excellent agreement with the actual ones. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：482 / 490
页数：9
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