736 - The principles of coin-tap method of non-destructive testing
Kim S.
Abstract
The physical basis of the coin-tap method of non-destructive inspection has been investigated. It has been shown that the characteristics of radiated sound from a structure during a tap are changed by the presence of defect beneath the surface of the structure. For structurally radiated noise, the sound field is directly coupled to the structural motion. Therefore, Impact response analysis should be computed. In this study, the adiated sound induced by impact is obtained by solving the Rayleigh integral equation. And the 2-D equivalent delamination model is used to analyze the impact response and acoustic analysis. Predicted impact responses using 2-D equivalent delamination model are compared with the numerical ones from the 3-D non-linear finite element model.
Citation
Kim S.: The principles of coin-tap method of non-destructive testing, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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