Development of Fretting Fatigue Parameter

Lee, Hyuk-Jae

doi:2011.14.1.92

J. KIMS Technol > Volume 14(1); 2011 > Article

Journal of the Korea Institute of Military Science and Technology 2011;14(1):92-99.
DOI: https://doi.org/10.9766/KIMST.2011.14.1.092

Development of Fretting Fatigue Parameter

Hyuk-Jae Lee

Materials Research Center for Energy and Green Technology, Andong National University

접촉피로 파라미터의 개발

이혁재

안동대학교 청정에너지소재기술연구센터

Abstract

In this study, new multi-axial, critical plane based, fretting fatigue crack initiation parameter is developed by the addition of a new term into the Modified Shear Stress Range(MSSR) parameter. The newly developed parameter (MSSR') is then used to evaluate fretting fatigue life of titanium alloy, Ti-6A1-4V with various contact conditions. Finite element analysis is also used in order to obtain stress distribution on the contact surface during fretting fatigue test, which is then used for the calculation of fretting fatigue parameter. The MSSR' parameter shows better performance in predicting fretting fatigue lives from the conventional fatigue data, and less scattering within fretting fatigue data with different contact geometries.

Key Words: Fretting Fatigue, Multi-axial Parameter, Critical Plane, Titanium Alloy, Finite Element Analysis