Influence of rebars on elastic-wave-based synthetic aperture focusing technique images for detecting voids in concrete structures

Jian Hua Tong, Chin Lung Chiu, Chung Yue Wang, Shu Tao Liao

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

Using elastic-wave-based NDT methods to detect defects in RC structures is difficult because of the interference of rebars. In this study, the interference effect on the quality of SAFT images was quantitatively explored using a series of numerical simulations. Furthermore, two concrete specimens were fabricated for experimental verification. The experimental results exhibited strong agreement with those of quantitative analyses used in numerical simulations. These results indicated that using SAFT images to expose the defects under a layer of rebars is feasible. Moreover, a useful guideline for selecting the impacting source to produce a high-quality SAFT image is proposed.

原文???core.languages.en_GB???
頁(從 - 到)33-42
頁數10
期刊NDT and E International
68
DOIs
出版狀態已出版 - 12月 2014

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