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김충환(Chung Hwan Kim),이상수(Sang Su Lee),천병희(Byoung Hee Cheon),권민범(Min Bum Kwon) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
This paper presented the possibility of predicting the fractured state based on the fracture noise characteristics of polyurethane foam used as insulation for LNG fuel tanks. Fracture noise was measured through a microphone during the mechanical test process, and the mechanical test performed three-point and four-point bending and single-edge notch bending under various load point conditions. This study obtained the feasibility of condition monitoring using fracture noise based on the measured fracture noise data.