A STUDY OF SHORT CRACK GROWTH IN TORSIONAL LOW CYCLE FATIGUE FOR A MEDIUM CARBON STEEL

1986 ◽  
Vol 9 (1) ◽  
pp. 15-33 ◽  
Author(s):  
E. Perez Carbonell ◽  
M. W. Brown
Keyword(s):  
Carbon Steel ◽  
Crack Growth ◽  
Low Cycle Fatigue ◽  
Medium Carbon Steel ◽  
Short Crack ◽  
Cycle Fatigue ◽  
Medium Carbon

Probabilistic Model of the Multiaxial Low-Cycle Fatigue Life Prediction

2012 ◽  
Vol 479-481 ◽  
pp. 2135-2140
Author(s):  
Lei Wang ◽  
Tian Zhong Sui ◽  
Hang Zhao ◽  
En Guo Men
Keyword(s):  
Fatigue Life ◽  
Carbon Steel ◽  
Probabilistic Model ◽  
Life Prediction ◽  
Low Cycle Fatigue ◽  
Medium Carbon Steel ◽  
Multiaxial Fatigue ◽  
Fatigue Life Prediction ◽  
Cycle Fatigue ◽  
Medium Carbon

First, several widely used models of the multiaxial low-cycle fatigue life prediction based on the critical plane approach were presented in this paper, and the predicted results of these models for a medium carbon steel under the condition of multiaxial low-cycle fatigue loading were compared. Second, the stochastic expressions and probability density function curves of the fatigue performance parameters were obtained by probabilistic analysis of the medium carbon steel fatigue data. Finally, the probabilistic model of the multiaxial fatigue life prediction was simulated by Monte Carlo Method, which should provide a basis for the reliability analysis of engineering components subjected to the multiaxial complex loads.

Damage Analysis of Medium Carbon Steel in Low Cycle Fatigue

2007 ◽  
Vol 353-358 ◽  
pp. 1141-1144
Author(s):  
Zhi Yuan Rui ◽  
Chun Peng Lu ◽  
Emin Li ◽  
Wu Yin Jin
Keyword(s):  
Experimental Data ◽  
Carbon Steel ◽  
Damage Evolution ◽  
Damage Mechanics ◽  
Low Cycle Fatigue ◽  
Medium Carbon Steel ◽  
Damage Analysis ◽  
Cycle Fatigue ◽  
Medium Carbon ◽  
Life Estimation

By the test of rotational bending for bar of 45 steel with V notch in low cycle fatigue, the bar’s fatigue life is studied under strain-controlled condition. The characteristics of several kinds of specimens' crack propagations are analyzed. The accumulative effect of crack propagation is discussed to find the appropriate load for quick fracture. Based on the theory of continuum medium damage mechanics, the damage evolution model in low cycle fatigue is obtained. The predicted curves and strain-life curves agree with experimental data for medium carbon steel well in this work. These results are very important for the life estimation of medium carbon steel.

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