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A NOVEL PARAMETER FOR EVALUATING THE FATIGUE CRACK GROWTH RATE IN CARBON STEELS 被引量：5

A NOVEL PARAMETER FOR EVALUATING THE FATIGUE CRACK GROWTH RATE IN CARBON STEELS
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摘要 A novel parameter is suggested for evaluating the fatigue crack growth rate in carbon steels. Fatigue crack propagation tests of an annealed 0.42% carbon steel were carried out under different conditions to investigate the relationship between this dominating parameter and the crack opening displacement (COD). A new equation of fatigue crack growth rate is formulated in terms of the suggested parameter. The physical meanings of the material parameters in this equation are explored experimentally. Considering the relation of crack growth and deformation properties, a simple and applicable method is proposed to evaluate the fatigue crack growth rate. It is also observed that the material parameters in the fatigue crack growth rate equation of carbon steels are related linearly to the material strength. The results are in a good agreement with experimental results. A novel parameter is suggested for evaluating the fatigue crack growth rate in carbon steels. Fatigue crack propagation tests of an annealed 0.42% carbon steel were carried out under different conditions to investigate the relationship between this dominating parameter and the crack opening displacement (COD). A new equation of fatigue crack growth rate is formulated in terms of the suggested parameter. The physical meanings of the material parameters in this equation are explored experimentally. Considering the relation of crack growth and deformation properties, a simple and applicable method is proposed to evaluate the fatigue crack growth rate. It is also observed that the material parameters in the fatigue crack growth rate equation of carbon steels are related linearly to the material strength. The results are in a good agreement with experimental results.
作者 X.S. Wang1), S.Q. Zhn1), N. Kawagoishi2) and H. Nisitani3) 1) Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China 2) Faculty of Engineering, Kagoshima University, Kagoshima, 890-0065, Japan
出处 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2001年第4期271-279,共9页 金属学报（英文版）
基金 the financial support of the Tsinghua University Foundation (Grant No. Jc~2OOOO57), and the Visiting Sch
关键词 Crack propagation EVALUATION Fatigue testing Parameter estimation Crack propagation Evaluation Fatigue testing Parameter estimation
分类号 TG142.31 [金属学及工艺—金属材料]
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参考文献30

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同被引文献29

  • 1张继明,张建锋,杨振国,李守新,惠卫军,翁宇庆.高强钢中最大夹杂物的尺寸估计与疲劳强度预测[J].金属学报,2004,40(8):846-850. 被引量：37
  • 2赵永翔,何朝明,杨冰,黄郁仲,高庆,邬平波.PROBABILISTIC MODELS FOR LONG FATIGUE CRACK GROWTH RATES OF LZ50 AXLE STEEL[J].应用数学和力学,2005,26(8):997-1002. 被引量：5
  • 3陈国华,周昌玉,黄文龙.疲劳裂纹随机扩展规律分析方法[J].南京化工大学学报,1996,18(3):63-66. 被引量：4
  • 4Wang G S. Intrinsic statistical characteristics of fatigue crack growth rate[J]. Eng. Fract. Mech, 1995, 51(5):787-803.
  • 5Wang K S, Chang S T, Shen Y C. Dynamic reliability models for fatigue crack growth problem[J]. Eng. Fract.Mech, 1996, 54(4): 543-556.
  • 6Rocha M M, Schueller G I. A probabilistic criterion for evaluating the goodness of fatigue crack growth models[J]. Eng. Fract. Mech, 1996, 53(5): 707-731.
  • 7Liu W K, Belytschko T, Liu Y J. Three reliability methods for fatigue crack growth[J]. Eng. Fract. Mech,1996, 53(5): 733-752.
  • 8Shi P, Mahadeva S. Damage tolerance approach for probabilistic pitting corrosion fatigue life prediction[J].Eng. Fract. Mech, 2001, 68: 1493-1507.
  • 9Shen W, Soboyejo A B O, Soboyejo W O. Probabilistic modeling of fatigue crack growth in Ti-6Al-4V[J]. Int. J.Fatigue, 2001, 23: 917-925.
  • 10Soboyejo W O, Shen W, Lou J, Mercer C, Sinha V,Soboyejo A B O. A probabilistic framework for the modeling of fatigue in a lamellar XD^TM gamma titanium alloy[J]. Int. J. Fatigue, 2002, 24: 69-81.

引证文献5

二级引证文献79

Acta Metallurgica Sinica(English Letters)
2001年 第4期

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