# 알루미늄 합금의 균열진전거동에 관한 연구

• 이종형 (금오공과대학교 기계공학부) ;
• 이현환 (김천농공고등학교 자동차과) ;
• 안세원 (금오공과대학교 생산기계 대학원) ;
• 박신규 (대구기능대학)
• Accepted : 2004.05.20
• Published : 2004.05.31

#### Abstract

According to the development of the aircraft industry, the fatigue strength of Aluminum Alloy becomes a great important material, but it seems that we don't understand an effect on the crack growth behaviour very well. This thesis is not only studied about the five kinds of 2017-T3, 2023-T3, 5083-0, 7075-T6, 7N01-T6 among the Aluminum Alloy which are the main materials of the aircraft, but also small or large relations against the fatigue strength of them. The consequence of the research was being progressed the accordance with the order. That is, The order is 2024-T3> 2017-T3> 7N01-T6> 7075-T6> 5083-0. These inclusion came out the acceleration phenomena in the crack growth behaviour among the high ${\Delta}K$ section Nevertheless I figured out their effects were being ignored at the 2b step.

#### Acknowledgement

Supported by : 금오공과대학교