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레이저 초음파의 횡파를 이용한 평판의 이면결함 측정에 관한 연구
이승훈(S. H. Lee),강영준(Y. J. Kang),이동환(D. H. Lee),백성훈(S. H. Baik),박승규(S. K. Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.9
Recently, an industrial interest for laser ultrasonic inspection system is increasing. A laser ultrasonic inspection system is non-contact inspection device which generates and measures ultrasounds by using laser beams. A laser ultrasonic inspection system provides a wide-band spectrum because the ultrasonic signal generated by a pulse laser beam and provides a high measurement resolution because the ultrasound is measured from a small focused spot of a detecting laser beam. In this paper, we have studied on the inspection technique of an opposite-side defect in a plate by using a laser-based shear wave. In this study, we could experimentally confirm that an opposite-side defect could be detected by observing the receiving of the laser-based shear wave.