Vibration resonance tests offer an efficient NDE method to identify and characterize shallow
(near-surface) delamination defects that afflict RC structures. However, efficient implementation of effective modal analysis methods for this purpose is hindered by practical testing limitations. This paper studies vibration resonance data from square, rectangular, and circular near-surface delamination defects in concrete using air-coupled impact resonance test.

• 오태근(인천대학교 안전공학과 조교수, 구조기술사) | Oh, Tae Keun Corresponding Author