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기성훈 ( Kee Seong-hoon ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
The depth of a surface-breaking crack in a concrete slab is characterized by using airborne surface wave transmission measurements. Two air-coupled sensors are used to measure surface waves across surface-breaking cracks with varying depths from 0 mm to 100 mm in a concrete slab (1500 X 1500 X 180 mm3). Resulting transmission coefficient and crack depth relation from a series of experimental studies shows a good agreement with theoretical results previously obtained by the author.
자동화된 충격반향법 장비를 이용한 콘크리트 교량 상판 박리 평가
기성훈 ( Kee Seong-hoon ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
Robotics-Assisted Bridge Inpection Tool (RABITTM) combines a capability of conventional non-destructive evaluation techniques for condition assessment of concrete bridge decks, including electrical resistivity (ER), ground-penetrating radar (GPR), impact-echo (IE), ultrasonic surface waves (USW), and a high resolution digital camera. In this study, the RABIT<sup>TM</sup> platform was used to evaluate delaminaitons in a concrete bridge deck fabricated in the laboratory.