한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제7권1호
  • /
  • Pages.124-132
  • /
  • 1993
  • /
  • 1225-0767(pISSN)
  • /
  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

2024-T3 A1 합금의 이방성이 피로균열진전속도와 정류거동에 미치는 영향

Effect of Anisotropy on Fatigue Crack Propagation Rate and Arrest Behavior with 2024-T3 Alumunum Alloy

  • 오세욱 (동아대학교, 공과대학기계공학과) ;
  • 김태형 (동아대학교, 공과대학기계공학과) ;
  • 오정종 (동아대학교, 공과대학기계공학과)
  • 발행 : 1993.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In order to examine the effect of anisotropy and stress ratio on fatigue crack propagation rate and opening-closing behavior and also arrest behavior by single tension peak overload, the fatigue tests of constant amplitude atress and single tension peak overload adding to cycle of constant amplitude were carried out in stress ratio of -0.4, -0.2, and 0.4 with materials of T-L and L-T directions in 2024-T3 aluminum alloy plate. Crack opening-closing begavior were measured by the compliance method using COD gage and strain gage. In case of the crack opening-closing behavior was measured by strain gage, the effect of stress ratio is unchangeable. But in the case of COD gage, that is remarkably decreased. Fictitious effective stress intensity factor(U sub(f)) and effective stress intensity factor ratio(U) in L-T direction was higher than those in T-L direction and also threshold arrest overload ratio incrased as stress ratio decreased and that of T-L direction was higher than that in L-T direction.

키워드

참고문헌

  1. Fatigue Crack Growth Under Spectrum Loads, ASTM STP 595 Mechanisms of Overload Retardation During Fatigue Crack Propagation Bernard,P.J.;Lindiey,T.C.;Richards,C.E.
  2. Eng. Fract. Mech. v.30 no.3 Effect of Single Overload in FCP Oktem Vardar
  3. Eng. Fract. Mech. v.23 The Effect of Single Overloads upon Fatigue Cracks in 5083-H321 Aluminium Thomas,W.M.
  4. Jour. Test and Evaluation v.3 no.1 Effect of Specimen Thickness on Delay in Fatigue Crack Growth Shih,T.T.;Wei,R.P.
  5. ASTM STP 529 Fatigue Crack Growth with Negative Stress Ratio Following Single Overloads in 2024-T3 and 7075-T6 Aluminum Alloys Stephens,R.I.;Chen,D.K.;Hom,B.W.
  6. Eng. Fract. Mech. v.30 no.5 The Effect of Overload Cycles on Fatigue Crack Propagation in Two Structural Steels Drew,M.W.;Thompson,K.R.L.
  7. Proceedings of the International Congress on Experimental Mechanics Correlation between Strain Hardening Exponents and Fatigue Crack Propagation Kim,S.C.;Kang,D.M.
  8. Eng. Fract. Mech. v.18 no.3 Micromechanism of Fatigue Crack Growth Retardation Following Overloads Suresh,S.
  9. ASTM STP 486, Damage Tolerance in Aircraft Structures The Singificance of Fatigue Crack Closure Elber,W.
  10. Transactions of ASME, Journal of Basic Engineering v.94 Spectrum Loading and Crack Growth Wheel,O.E.
  11. AFFDL-TR-71-1, Airforce Flight Dynamics Laboratory, Wright-Patterson AFB A Crack Growth Retardation Model Using Effective Stress Concept Willenborg,J.;Engle,R.M.;Wood,H.A.
  12. ASTM E647-91 Standard Text Method for Measurement of Fatigue Crack Growth Rate
  13. 韓國海洋工學會誌 v.6 no.1 7075-T3Al 合金의 波勞龜裂 波勞速度와 停留擧動에 미치는 應力比의 影響 吳世旭;姜相薰;許正元;金泰亨
  14. 대한기계학회논문집 v.2 no.1 Notch 재 피로와 Kikukawa-Compliance법 송지호;박영조
  15. Eng. Fract. Mech. v.14 Some Formulas for the Crack Opening Stress Level Schijve,J.
  16. ASTM STP 599 Effect of R-Factor and Crack Closure on Fatigue Crack Growth for Aluminum and Titanium Alloys Katcher,M.
  17. Eng. Fract. Mech. v.22 no.6 Influence of R on Effective Stress Range Ration and Crack Growth Garg,S.B.L.;Srivastava,Y.P.
  18. 대한기계학회논문집 v.4 no.2 2017-T3 알미늄 합금의 피로균열진전과 균열닫힘현상 송지호;김일현;신용승
  19. 大韓機械學會論文集 v.14 no.5 單一過大重荷에 의한 波勞龜裂進展의 遲滯遲延現象에 관한 硏究 吳世旭;姜相薰
  20. ASTM STP 590 Effect of Stress Ration and Arrest Behavior due to Single Peak Overloads Prost,E.P.;Hillberry,B.M.