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Title |
Investigation of the Stress-Wave Propagation In Improve the Reliability of the Impact-Echo Method
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Keywords |
충격반향기법; 유한요소해석; 동강성행렬법; 파동전파해석; impact-echo test; finite element analysis; dynamic stiffness matrix method; wave propagation |
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Abstract |
The impact-echo test, which is to evaluate the integrity of concrete and masonry structures nondestructively, is an excellent method in the practical application. However, there are cases that the Impact-Echo testing nay result in the low reliability. In this study, the reliability of the Impact-Echo testing was investigated through the numerical simulation of the Impact-Echo testing. The finite element analysis and the analysis based on the dynamic stiffness matrix method was incorporated for the numerical simulation, in which the cases of a sandwiched shear stiffness, an incr＋easing or decreasing stiffness, and a homogeneous stiffness. Based on the results of the analysis were considered, this study proposed the approaches to Improve the reliability of the Impact-Echo testing.
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