Crack identification in double-cracked plates using wavelet analysis

被引：12

作者：

Nikravesh, Seyed Majid Yadavar ^{[1
]}

Nezamivand Chegini, Saeed ^{[1
]}

机构：

[1] Power & Water Univ Technol, Dept Mech Engn, Tehran, Iran

来源：

MECCANICA | 2013年 / 48卷 / 09期

关键词：

Crack detection; Discrete wavelet transform; Double-cracked; All-over part-through crack; Mode shape; DAMAGE DETECTION; VIBRATION ANALYSIS; RECTANGULAR-PLATES; BEAMS; TRANSFORM; LOCATION;

D O I：

10.1007/s11012-013-9726-7

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, vibration first mode of a plate with two all-over part-through cracks are analyzed by using discrete wavelets transform of Spline, Haar, Harmonic and Duabechies. It is observed that crack locations are detectable in values of wavelet coefficients as sudden changes. The sensitivity of the wavelet transform method with respect to the variation in type and scale of wavelet, and the variation in distance between two cracks and relative depth of cracks is also investigated. Finally, a function is proposed for determining crack characteristics by using maximum variations trend of the Spline and Harmonic wavelet coefficients with change in relative depth of cracks.

引用

页码：2075 / 2098

页数：24

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