Journal of Industrial Technology (산업기술연구)
- Volume 24 Issue B
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- Pages.163-170
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- 2004
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
Numerical Experiments for Detecting Voids and Defects Inside Concrete
수치모형실험을 통한 콘크리트 구조물의 결함탐지에 관한 연구
- Published : 2004.08.31
Abstract
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.