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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
Article
  • 2 Downloads

Abstract

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 

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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

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