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수치모형실험을 통한 콘크리트 구조물의 결함탐지에 관한 연구
김용인(Kim Yong In),변중무(Byun Joong Moo),손권익(Sohn Kwon lk),서백수(Suh Baek Soo) 강원대학교 산업기술연구소 2004 産業技術硏究 Vol.24 No.1
In this study, First, the results of travel-time inversion (first arrival inversion using the travel-time of the first arrival) were compared with those of full-wave inversion for numerical data. Numerical experiments to find key parameters other than initial velocity model showed that the frequency of source has a great effect on the result of full-wave inversion. Finally, this research presented the corrected full-wave inversion applying the correction term to the final result of full-wave inversion. The corrected full-wave inversion depicted cavities inside concretes even when the inversion started with 20% error in an initial velocity model for cavities. However, full-wave inversion did not reveal cavities.