모바일 펄스-에코 초음파 전파 영상화 장치를 사용한 T-50 고등훈련기 수평 안정판 현장 비파괴 평가

Abstract

Defects and damages, such as disbond and delamination, mainly occur in composite structures, which are increasingly used in aircraft structures, and their detection is difficult. A mobile pulse-echo ultrasonic propatation imager (PE UPI) is a laser ultrasonic nondestructive inspection tool used as an in-situ nondestructive evaluation tool. The potential of mobile PE UPIs has been confirmed through a certification test of non-destructive standard specimens and F-16 Lockheed Martin standard specimens from the Korea Air Force. In this study, a mobile PE UPI was applied to the horizontal stabilizer of a T-50 advanced trainer as an in-situ non-destructive evaluation tool, and the field applicability of mobile PE UPI was proved by comparing inspection results with the conventional A-scan ultrasonic testing technique.