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Title: Fractal mechanism for characterizing singularity of mode shape for damage detection

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2]
  1. Department of Engineering Mechanics, Hohai University, Nanjing 210098 (China)
  2. Institute of Fluid-Flow Machinery, Polish Academy of Sciences, ul. Fiszera 14, 80-952 Gdansk (Poland)
  3. (Poland)
  4. Department of Engineering Mechanics, Shandong Agricultural University, Taian 271000 (China)
Publication Date:
OSTI Identifier:
22253951
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 22; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRACKS; DAMAGE; FRACTALS; LASERS; SHAPE; SINGULARITY; WAVE FORMS