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정적 광탄성 실험 Hybrid 법에 의한 에너지 해방률에 관한 연구
신동철(Dong-Chul Shin),황재석(Jai-Sug Hawong),남성수(Sung-Su Nam) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.8
In this research, dynamic energy release rate of a propagating interfacial crack in the bimaterial is developed. If the interfacial crack propagating velocity(c) is equal to zero(=0), the definition for the dynamic energy release rate of a propagating interfacial crack in the bimaterial reduce to one's of static energy release rate of interfacial crack in the bimaterial. Using above conception for static energy release rate and static photoelastic experiment hybrid method, we have studied the variations of static energy release rate according to the geometric conditons of interfacial crack in the bimaterial.
정적 광탄성 실험 하이브리드 법에 의한 등방성체의 균열전파 기준에 관한 연구
신동철(Dong-Chul Shin),황재석(Jai-Sug Hawong),남정환(Jeong-Hwan Nam),남성수(Sung-Su Nam),이동훈(Dong-Hoon Lee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.8
The specimen materials used in this research are isotropic material. The static photoelastic experiment was applied to them. And then the specimens used in photoelastic experiment were fractured under static load. The static photoelastic hybrid method was introduced and its validity had been assured. The static photoelastic hybrid method was applied to the Minimum Strain Energy Density Criterion, the Maximum Tangential Stress Criterion and Mode Mixity. Crack propagation criterion by the static photoelastic hybrid method was introduced and it was applied to the above various failure theories. Comparing the experimental initial angle of crack propagation with the theoretical initial angle of crack propagation from the various failure criterions. And then the optimal crack propagation criterion was suggested.
정적 광탄성 실험 하이브리드 법에 의한 두 상이한 등방성 이종재료의 계면균열전파 기준에 관한 연구
최콘스탄틴(Konstantin Tche),황재석(Jai-Sug Hawong),신동철(Dong-Chul Shin),남성수(Sung-Su Nam),남정환(Jeong-Hwan Nam) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
The specimen materials used in this research is bimaterial. The static photoelastic experiment was applied<br/> to them. And then the specimens used in photoelastic experiment were fractured under static load. The static<br/> photoelastic hybrid method was introduced and it’s validity had been assured. The static photoelastic hybrid<br/> method was applied to the Minimum Strain Energy Density Criterion, the Maximum Tangential Stress<br/> Criterion and Mode Mixity. Crack propagation criterion by the static photoelastic hybrid method was<br/> introduced and it was applied to the above various failure theories. Comparing the experimental initial angle<br/> of crack propagation with the theoretical initial angle of crack propagation from the various failure criterions.<br/> And then the optimal crack propagation criterion was suggested and it’s validity was assured.