Fractal mechanism for characterizing singularity of mode shape for damage detection

被引：33

作者：

Cao, M. S. ^{[1
]}

Ostachowicz, W. ^{[2
,3
]}

Bai, R. B. ^{[4
]}

Radzienski, M. ^{[2
]}

机构：

[1] Hohai Univ, Dept Engn Mech, Nanjing 210098, Jiangsu, Peoples R China

[2] Polish Acad Sci, Inst Fluid Flow Machinery, PL-80952 Gdansk, Poland

[3] Warsaw Univ Technol, Fac Automot & Construct Machinery, PL-02524 Warsaw, Poland

[4] Shandong Agr Univ, Dept Engn Mech, Tai An 271000, Shandong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 22期

基金：

中国国家自然科学基金;

关键词：

TIME-SERIES; DIMENSION; SURFACE; SIGNALS; CRACKS; BEAMS;

D O I：

10.1063/1.4833837

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Damage is an ordinary physical phenomenon jeopardizing structural safety; damage detection is an ongoing interdisciplinary issue. Waveform fractal theory has provided a promising resource for detecting damage in plates while presenting a concomitant problem: susceptibility to false features of damage. This study proposes a fractal dimension method based on affine transformation to address this problem. Physical experiments using laser measurement demonstrate that this method can substantially eliminate false features of damage and accurately identify complex cracks in plates, providing a fundamental mechanism that brings the merits of waveform fractal theory into full play in structural damage detection applications. (C) 2013 AIP Publishing LLC.

引用

页数：4

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