Evaluation of simulated transfer functions of concrete plate derived by impact-echo method

被引:15
作者
Cheng, Chia-Chi [1 ]
Lin, Yiching
Hsiao, Chia-Men
Chang, Hsiang-Chieh
机构
[1] Chaoyang Univ Technol, Dept Construct Engn, Wufeng 41349, Taichung County, Taiwan
[2] Natl Chung Hsing Univ, Dept Civil Engn, Taichung 40227, Taiwan
[3] Natl Taichung Inst Technol, Dept Internal Design, Taichung 40446, Taiwan
关键词
impact-echo; concrete; nondestructive tests; stress waves;
D O I
10.1016/j.ndteint.2006.10.001
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, the simulated transfer function of a concrete plate was obtained solely from displacement waveform in an impact-echo test. In the simulated transfer function, the amplitude corresponding to the modal vibration at thickness direction, called the thickness-amplitude, can be consistent during various tests on the same location. An empirical formula was obtained by numerical simulation to predict the thickness-amplitude for given thickness, impact-receiver distance, and P-wave speed. The formula was confirmed experimentally using plates made from various mixed materials with various thicknesses. The differences between the experimental and predicted thickness-amplitude are mostly within 10%. The formula has the potential for quantitative evaluation of the bond between concrete and the substrate layer. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:239 / 249
页数:11
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