Acta Mechanica Solida Sinica

, Volume 22, Issue 4, pp 360–368 | Cite as

Crack Identification in Stepped Cantilever Beam Combining Wavelet Analysis with Transform Matrix

Article

Abstract

This paper illustrates the crack identification method combining wavelet analysis with transform matrix. Firstly, the fundamental vibration mode was applied to wavelet analysis. The crack location was found by the peaks of the wavelet coefficients. Secondly, based on the identified crack locations, a simple transform matrix method requiring only the first two tested natural frequencies was used to further identify the crack depth. The present method can be used for crack identification in a complex structure. Numerical results of crack identification of a stepped cantilever beam show that the suggested method is feasible.

Key words

crack cantilever beam wavelet transform matrix 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2009

Authors and Affiliations

  1. 1.College of Science & EngineeringJinan UniversityGuangzhouChina
  2. 2.Institute of Applied MechanicsTaiyuan University of TechnologyTaiyuanChina
  3. 3.The Key Laboratory of Disaster Forecast and Control in EngineeringMinistry of Education of China, Jinan UniversityGuangzhouChina

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