Multiaxial fatigue life prediction for titanium alloy TC4 under proportional and nonproportional loading

Abstract Both proportional and nonproportional tension–torsion fatigue tests were conducted on titanium alloy TC4 tubular specimens. Six multiaxial fatigue parameters are reviewed and evaluated with life data obtained in the tests. It is found that the effective strain, the maximum shear strain and the Smith–Watson–Topper (SWT) criteria tend to give non-conservative results under nonproportional loading. The shear strain-based critical plane approaches, especially Wu–Hu–Song (WHS) approach show better life prediction abilities. The prediction results based on WHS parameter are all within a factor of two scatter band of the test results.

[1]  K. S. Kim,et al.  fatigue analysis under variable amplitude loading using an energy parameter , 2003 .

[2]  Darrell F. Socie,et al.  Multiaxial Fatigue Damage Models , 1987 .

[3]  Ali Fatemi,et al.  Multiaxial fatigue of titanium including step loading and load path alteration and sequence effects , 2010 .

[4]  N. Dowling,et al.  Mechanical Behavior of Materials , 2012 .

[5]  M. W. Brown,et al.  Low-Cycle Fatigue Under Out-of-Phase Loading Conditions , 1977 .

[6]  K J Pascoe,et al.  Low cycle fatigue of steels under biaxial straining , 1967 .

[7]  K. J. Miller,et al.  A Theory for Fatigue Failure under Multiaxial Stress-Strain Conditions , 1973 .

[8]  Tatsuo Inoue,et al.  Low Cycle Fatigue under Multiaxial Stresses : In the Case of Combined Cyclic Tension-Compression and Cyclic Torsion at Room Temperature , 1969 .

[9]  A. Fatemi,et al.  A CRITICAL PLANE APPROACH TO MULTIAXIAL FATIGUE DAMAGE INCLUDING OUT‐OF‐PHASE LOADING , 1988 .

[10]  K. J. Miller,et al.  HIGH TEMPERATURE LOW CYCLE BIAXIAL FATIGUE OF TWO STEELS , 1979 .

[11]  Z. Wu.  Multi-axial Fatigue Life Prediction Model Based on Maximum Shear Strain Amplitude and Modified SWT Parameter , 2013 .

[12]  Yanyao Jiang,et al.  Multiaxial fatigue of extruded AZ31B magnesium alloy , 2012 .

[13]  Y. Garud.  A New Approach to the Evaluation of Fatigue Under Multiaxial Loadings , 1981 .

[14]  A. Ince,et al.  Fatigue characterization and modeling of 30CrNiMo8HH under multiaxial loading , 2011 .

[15]  Xu Chen,et al.  Evaluation of multiaxial fatigue criteria under irregular loading , 2002 .