Study at non-destructive testing technology based on vibration characteristics of the steel rod with crack

被引：0
作者：
Sun, Hongchun [1 ]
Wang, Lina [1 ]
Liu, Yize [2 ]
机构：
[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang, Liaoning, Peoples R China
[2] Nucl Power Inst China, Chengdu, Sichuan, Peoples R China
来源：
PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INFORMATION ENGINEERING FOR MECHANICS AND MATERIALS | 2016年 / 97卷
基金：
中国国家自然科学基金;
关键词：
non-destructive testing; vibration characteristics; steel rod; crack; wavelet modulus maxima;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Non-destructive testing technology of a steel bar with crack are analyzed and discussed based on vibration characteristics method. The natural frequencies, mode shapes and modal curvature modal for crack of steel bar were analyzed using the method of finite element analysis. Thus it is concluded that the modal curvature mode can be better characterization of damage properties. In order to determine crack depth, the mathematical expressions between damage factor and crack depth are constructed through wavelet analysis of curvature mode. The results for the selection of dynamic damage identification index and non-destructive testing of member bar structures for engineering structure have engineering application value.
引用
收藏
页码：65 / 69
页数：5
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