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A New Approach of Imaging Defects in Concrete Structures

콘크리트 구조물의 결함탐사에 대한 새로운 가시화 수법

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/301724
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한국방재학회 (Korean Society Of Hazard Mitigation)
초록

Image created by stack imaging spectral amplitudes based on the impact-echo (SIBIE) method is largely one-dimensional because a single frequency domain spectrum for wave reflected below a single point of impact is used to create the image. The method has limitations for representing defects in a cross section of a concrete structural element using two-dimensional coordinates. This study focused on defect detection and visualization in a concrete structural element using multiple impacts and accumulated SIBIE. An impactor was used to induce energy at multiple points at positioned at prescribed intervals along the structural element. A modified SIBIE method was applied to the collected data of each point and the modified SIBIE images were accumulated to generate one image (an accumulated SIBIE image). As a result, the defect positions could be represented in the cross section of the structural element using a two-dimensional coordinate system.

저자
  • Lee, Sanghun(Member, Tohoku Gakuin University, Dept. of Civil and Environ. Eng., Associate Professor) | 이상훈
  • Endo, Takao(Tohoku Gakuin University, Dept. of Civil and Environ. Eng., Professor) | 엔도타카오
  • Kagaya, Makoto(Akita University, Dept. of Civil Eng., Professor) | 카가야마코토
  • Sugawara, Takashi(Hachinohe National College of Technology, Professor) | 스가와라타케시