서지주요정보
Al-2024-T4의 프레팅 피로 균열 거동에 관한 실험적 연구 = An experimental study on the fretting fatigue crack behaviour of Al-2024-T4
서명 / 저자 Al-2024-T4의 프레팅 피로 균열 거동에 관한 실험적 연구 = An experimental study on the fretting fatigue crack behaviour of Al-2024-T4 / 이봉훈.
저자명 이봉훈 ; Lee, Bong-Hoon
발행사항 [대전 : 한국과학기술원, 1996].
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소장정보

등록번호

8006106

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 96055

SMS전송

도서상태

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반납예정일

초록정보

An experimental technique of fretting fatigue test was developed and fretting fatigue tests of Al-2024-T4 were conducted under several conditions. In the normal stress and frictional stress calibrations hole and cross type specimen were used. The calibrations resulted in good linearity and repeatability. In fretting fatigue experiment a plate type specimen to which tow bridge type pads were attached was used, and a C.C.D cmera and a P.C vision board was used to observe the crack behavior. The oblique cracks appeared at the early stage of crack growth and they became mode I cracks as the crack grows over about 1mm. This transition point was found to be longer when surface tractions are higher or bulk stress is lower. Before the crack become the mode I crack 'well point' was detected under every conditions. The crack growth rate was found to be affected by surface tractions, pad contact area and bulk stress. It was also found that partial slip and stick is most detrimental condition for material life. Equivalent stress intensity factor was used to analyse the behavior of fretting fatigue crack and it was found to be valuable, but it needed some modification in the early stage of crack growth.

서지기타정보

서지기타정보
청구기호 {MME 96055
형태사항 v, 74 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Bong-Hoon Lee
지도교수의 한글표기 : 이순복
지도교수의 영문표기 : Soon-Bok Lee
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 22-23
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