Acta Mechanica Solida Sinica

, Volume 21, Issue 4, pp 375–382 | Cite as

Investigation of Fracture Design for Medium Carbon Steel under Extra-Low Cyclic Fatigue in Axial Loading

  • Youtang Li
  • Shuai Tan
  • Hongyan Duan


The extra-low cyclic fracture problem of medium carbon steel under axial fatigue loading was investigated. Several problems, such as the relations of the cycle times to the depth and tip radius of the notch, loading frequency, loading range and the parameters of fracture design for medium carbon steel on condition of extra-low axial fatigue loading were discussed based on the experiments. Experimental results indicated that the tension-pressure fatigue loading mode was suitable for extra-low cyclic fatigue fracture design of medium carbon steel and it resulted in low energy consumption, fracture surface with high quality, low cycle times, and high efficiency. The appropriate parameters were as follows: loading frequency 3–5 Hz, notch tip radius r = (0.2–0.3) mm, opening angle α = 60°, and notch depth t = (0.14–0.17) D.

Key Words

extra-low cyclic fatigue fracture design medium carbon steel crack technique 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Tavernelli, J.F. and Coffin, L.F., Experimental support for generalized equation predicting low cycle fatigue. Journal of Basic Engineering, Transactions of the ASME, 1962, 84: 533–537.CrossRefGoogle Scholar
  2. [2]
    Paris, P.C., A critical analysis of crack propagation laws. Journal of Basic Engineering, 1963, 85: 528–534.CrossRefGoogle Scholar
  3. [3]
    Neuber, H., Theory of concentration for shear strained prismatical bodies with arbitrary nonlinear stress-strain law. Journal of Applied Mechanics, 1961, 28: 544–550.MathSciNetCrossRefGoogle Scholar
  4. [4]
    Dowling, N.E., Fatigue at notches and the local strain fracture mechanics approaches. ASTM STP, 1979, 677: 247–273.Google Scholar
  5. [5]
    Bentachfine, S., Notch effect in low cycle fatigue. International Journal of Fatigue, 1999, 21: 421–430.CrossRefGoogle Scholar
  6. [6]
    Ye, D.Y., A new approach to the prediction of fatigue notch reduction factor Kf. International Journal of Fatigue, 1996, 18: 105–109.CrossRefGoogle Scholar
  7. [7]
    Noda, N.A., Stress concentration formula useful for all notch shape in a round bar. International Journal of Fatigue, 2005, 18: 1–13.Google Scholar
  8. [8]
    Filippini, M., Stress gradient calculations at notches. International Journal of Fatigue, 2000, 22: 397–409.CrossRefGoogle Scholar
  9. [9]
    Wang, X.S. and Fan, J.H., SEM online investigation of fatigue crack initiation and propagation in cast magnesium alloy. Journal of Materials Science, 2004, 39(7): 2617–2620.CrossRefGoogle Scholar
  10. [10]
    Wang, X.S., Feng, X.Q. and Guo, X.W., Failure behavior of anodized coating-magnesium alloy substrate structures. Key Engineering Materials, 2004, 261–263: 363–368.CrossRefGoogle Scholar
  11. [11]
    Li, Y.T., Rui, Z.Y. and Yan, C.F., The applied research of fracture for low carbon steel in extra-low cycle rotating bending fatigue. Key Engineering Materials, 2004, 271–272: 211–216.CrossRefGoogle Scholar
  12. [12]
    Li, Y.T., The application of fracture for medium carbon steel in extra-low cycle inverse rotating bending fatigue loading. Key Engineering Materials, 2004, 261–263: 1147–1152.CrossRefGoogle Scholar
  13. [13]
    Li, Y.T., The application of fracture for medium carbon steel in extra-low cycle rotating bending fatigue loading. Key Engineering Materials, 2004, 261–263: 1153–1158.CrossRefGoogle Scholar

Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2008

Authors and Affiliations

  • Youtang Li
    • 1
    • 2
  • Shuai Tan
    • 2
  • Hongyan Duan
    • 2
  1. 1.Key Laboratory of Digital Manufacturing Technology and ApplicationMinistry of Education, Lanzhou University of TechnologyLanzhouChina
  2. 2.College of Mechano-Electronic EngineeringLanzhou University of TechnologyLanzhouChina

Personalised recommendations