Journal
TRIBOLOGY INTERNATIONAL
Volume 108, Issue -, Pages 2-6Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.07.028
Keywords
Fretting fatigue; Multiaxial fatigue, fatigue life estimation; Theory of critical distances
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Funding
- CNPq [310845/2013-0, 309748/2013-5]
- FINATEC
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This work presents a methodology for fretting fatigue life estimation based on the evaluation of a multiaxial fatigue parameter at a critical distance below the contact surface. The fatigue parameter is defined using the Modified Wailer Curve Method together with a measure of shear stress amplitude based on the Maximum Rectangular Hull concept. To apply the approach in the medium-cycle fatigue regime, the critical distance is assumed to depend on the fatigue life. Available fretting fatigue experiments conducted on a cylinder-on-flat contact configuration made of Al-4%Cu alloy were used to evaluate the methodology. Most of the fatigue life estimates were within factor-of-two boundaries.
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