Wavelet analysis for damage identification in composite structures

被引：5

作者：

Grabowska, Joanna ^{[2
]}

Palacz, Magdalena ^{[1
,3
]}

Krawczuk, Marek ^{[2
]}

Ostachowicz, Wieslaw ^{[3
,4
]}

Trendafilova, Irina ^{[5
]}

Manoach, Emil ^{[6
]}

Cartmell, Matthew ^{[7
]}

机构：

[1] 14 Fiszera Str, PL-80952 Gdansk, Poland

[2] Gdansk Univ Technol, PL-80952 Gdansk, Poland

[3] Polish Acad Sci, PL-80952 Gdansk, Poland

[4] Gdynia Maritime Univ, Gdynia, Poland

[5] Univ Strathclyde, Glasgow G1 1XQ, Lanark, Scotland

[6] Bulgarian Acad Sci, Sofia, Bulgaria

[7] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

来源：

DAMAGE ASSESSMENT OF STRUCTURES VII | 2007年 / 347卷

关键词：

damage detection; wavelet analysis; wave propagation;

D O I：

10.4028/www.scientific.net/KEM.347.253

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The main aspect of the paper is to give an answer to the question of what specific kind of defect has actually occurred in a structure and how to distinguish between different kinds of discontinuities. For this purpose composite rods and beams with fatigue cracks, step changes in cross-sectional area and small changes in material properties have been investigated. The objective of the work has been to propose a signal processing methodology based on wavelet transformation for identification of specific discontinuity. The identification of a fatigue crack from other discontinuities has been demonstrated. It has been also found that the proposed methodology might be useful for precise indication of the size of the identified fatigue damage.

引用

页码：253 / +

页数：2

共 14 条

[1]

Doyle J.F., 1997, WAVE PROPAGATION STR

[2]

FRIBOURGBLANC E, 2002, P 1 EUR WORKSH SHM, P321

[3] Identification of discontinuities in composite rods and beams based on lamb wave propagation [J].