Original Paper
김 동규
[*] Dong-Gyu Kim
[*], 공 유식
[**] Yu-Sik Kong
[**], 이 진경
[***][†] Jin-Kyung Lee
[***][†]
Keywords: 마찰용접, 배관재, 인장강도, 음향방출, AE 파라미터, 누적계수.
Keywords: Friction Welding, Piping Material, Tensile Strength, Acoustic Emission, AE Parameter, Accumulative count.
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