Volume 28 Issue 6
Jun.  2013
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WANG Yan-rong, LI Hong-xin, YUAN Shan-hu, WEI Da-sheng, SHI Liang. Method for notched fatigue life prediction with stress gradient[J]. Journal of Aerospace Power, 2013, 28(6): 1208-1214.
Citation: WANG Yan-rong, LI Hong-xin, YUAN Shan-hu, WEI Da-sheng, SHI Liang. Method for notched fatigue life prediction with stress gradient[J]. Journal of Aerospace Power, 2013, 28(6): 1208-1214.

Method for notched fatigue life prediction with stress gradient

  • Received Date: 2012-06-11
  • Publish Date: 2013-06-28
  • A method for fatigue life prediction of notched specimen or real component when taking the effects of mean stress,stress gradient and dimensional size into consideration was developed based on the distribution of dimensionless stress at notch root of the specimen.The factors for stress gradient and dimensional size were calculated and the fatigue life was predicted for two types of notches machined with TC4 alloy.The results show that mean stress at notch root and the factors for stress gradient and dimensional size could reflect the effects of notch on the fatigue life.Predictions based on the developed approach give estimates falling within 2-fold scatter.

     

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  • [1]
    Topper T H,Wetzel R M,Morrow J.Neuber's rule applied to fatigue of notched specimens[J].Journal of Materials,1969,4(1):200-209.
    [2]
    Dowling N E,Brose W R,Wilson W K.Notched member fatigue life prediction by the local strain approach[J].Advances in Engineering Fatigue under Complex Loading SAE,1977,6(1):55-84.
    [3]
    Qylafku G,Azari Z,Gjonaj M,et al.On the fatigue failure and life prediction for notched specimens[J].Materials Science,1998,34(5):604-618.
    [4]
    Luca S.The theory of critical distances:a review of its applications in fatigue[J].Engineering Fracture Mechanics,2008,75(7):1706-1724.
    [5]
    Luca S,David T.An elasto-plastic reformulation of the theory of critical distances to estimate lifetime of notched components failing in the low/medium-cycle fatigue regime[J].Journal of Engineering Materials and Technology,2010,132(1):1-8.
    [6]
    Basquin O H.The exponential law of endurance tests[J].American Society for Testing and Materials Proceedings,1910,10(6):625-630.
    [7]
    Manson S S.Behavior of materials under conditions of thermal stress.:Heat Transfer Symposium,University of Michigan Engineering Research Institute,1953.
    [8]
    Coffin L F,Jr.A study of the effect of cyclic thermal stresses on a ductile metal[J].Transactions of ASME,1954,76:931-950.
    [9]
    Morrow J D.Cyclic plastic strain energy and fatigue of metals.Philadelphia,PA:In Internal Friction,Damping,and Cyclic Plasticity,ASTM,STP 378,American Society for Testing and Materials,1965:45-86.
    [10]
    Morrow J D.Fatigue design handbook section 3.2[J].SAE Advances in Engineering,Society for Automotive Engineers,1968,4(1):21-29.
    [11]
    Smith K N,Watson P,Topper T H.A stress-strain function for the fatigue of metals[J].Journal of Materials,1970,5(4):767-778.
    [12]
    Walker K.The effect of stress ratio during crack propagation and fatigue for 2024-T3 and 7075-T6 aluminum[J].American Society for Testing and Materials,1970,462(1):1-14.
    [13]
    袁善虎,魏大盛,王延荣.FGH97缺口试样基于粘塑性本构的弹塑性响应分析[J].航空动力学报,2012,27(10):2348-2355. YUAN Shanhu,WEI Dasheng,WANG Yanrong.Analysis of elastoplastic in FGH97 notched specimens based on viscoplastic constitutive model[J].Journal of Aerospace Power,2012,27(10):2348-2355.(in Chinese)
    [14]
    Dowling N E.Mean stress effects in stress-life and strain-life fatigue[R].Society of Automotive Engineers,Inc.,Technical Paper F2004/51,2004.
    [15]
    Filippini M.Stress gradient calculations at notches[J].International Journal of Fatigue,2000,22(5):397-409.
    [16]
    Adib-Ramezani H,Jeong J.Advanced volumetric method for fatigue life prediction using stress gradient effects at notch roots[J].Computational Materials Science,2007,39(3):649-663.
    [17]
    YAO Weixing,XIA Kaiquan,GU Yi.On the fatigue notch factor, Kf[J].International Journal of Fatigue,1995,17(4):245-251.
    [18]
    Stamoulis K,Giannakopoulos A E.Size effects on strength,toughness and fatigue crack growth of gradient elastic solids[J].International Journal of Solids and Structures,2008,45(18/19):4921-4935.
    [19]
    中国航空材料手册编辑委员会.中国航空材料手册[M].北京:中国标准出版社,1988.
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