Accumulated SIBIE를 사용한 콘크리트 구조물의 결함탐사

• 영문명: Detecting defects in concrete structures using accumulated SIBIE
• 발행기관: 한국방재학회
• 저자명: 이상훈(Lee Sang hun) 엔도 타까오(Endo Takao) 이시다 히로키(Ishida Hiroki)
• 간행물 정보: 『3. 한국방재학회 학술대회논문집』2015년, 246~246쪽, 전체 1쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 2015.02.25

영문 초록

Images created by stack imaging spectral amplitudes based on the impact-echo (SIBIE) method are largely one-dimensional because a single frequency domain spectrum for waves reflected below a single point of impact is used to create them. 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 positioned at prescribed intervals along the structural element. A modified SIBIE method was applied to the collected data for 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. And the method appears to improve upon existing methods to detect voids or other defects in concrete.

키워드

concrete detection of defects visualization SIBIE impact response analysis