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Finite Element Analysis of Harmonics Generation by Cracks  

Yang, Seung-Yong (한국기술교육대학교 기계정보공학부)
Kim, Noh-Yu (한국기술교육대학교 메카트로닉스공학부)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.22, no.6, 2009 , pp. 573-577 More about this Journal
Abstract
When ultrasound propagates to a crack, transmitted and reflected waves are generated. These waves have useful information for the detection of the crack lying in a structure. In this paper, using finite element analysis, displacements round a inclined crack were obtained for 4 different inclination angles. Fourier transformation is applied to the results to research the frequency characteristics depending on the various locations around the crack. 2-dimensional plane stress model is considered, and finite element software ABAQUS/Explicit is used.
Keywords
closed crack; finite element analysis; ultrasound; harmonics;
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