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심준기,김기현,Sim, Jun-Gi,Kim, Ki-Hyun 한국복합신소재구조학회 2015 복합신소재구조학회논문집 Vol.6 No.3
The purpose of this paper is to find an limitation to detect the defect of damaged asphalt pavement structures for infrared thermography. We use heat source of a natural light to detect the defect efficiently. The heat source was applied to the asphalt specimens. Four asphalt specimens were used: one was the asphalt containing depth of 1cm internal timber, two was the asphalt containing depth of 2cm internal void, Three was the asphalt containing depth of 3cm internal timber and four was not the asphalt containing internal timber. It was found that the depth of 3cm internal timber could be detected by this method. In addition, we used the image processing to make the damage zone displayed clear in the image obtained from the thermographic operation.
콘크리트 내부 공극 및 FRP시트 보강 콘크리트 비부착 결함 검출 최적 열화상 기법 연구
심준기 ( Sim Jun-gi ),지광습 ( Zi Goangseup ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
In this paper, optimal conditions for the use of infrared technique to detect voids in concretes and delamination between FRP sheet and concrete were studied experimentally. As a result, we found that far-infrared heating is more sensitive than the natural light and halogen lamp. Used natural light as heating source, voids in concrete well detected when the time was 10 A.M. to 2 P.M. and 5 P.M to 6 P.M.. The temperature profile got reversed depend on the time.
심준기 ( Jun Gi Sim ),김기현 ( Ki Hyun Kim ) 한국복합신소재구조학회 2015 복합신소재학회논문집 Vol.6 No.3
The purpose of this paper is to find an limitation to detect the defect of damaged asphalt pavement structures for infrared thermography. We use heat source of a natural light to detect the defect efficiently. The heat source was applied to the asphalt specimens. Four asphalt specimens were used: one was the asphalt containing depth of 1cm internal timber, two was the asphalt containing depth of 2cm internal timber, Three was the asphalt containing depth of 3cm internal timber and four was not the asphalt containing internal timber. It was found that the depth of 3cm internal timber could be detected by this method. In addition, we used the image processing to make the damage zone displayed clear in the image obtained from the thermographic operation.