SEDL / STP / STP1367-EB / STP14730S

Effects of Contact Load and Contact Curvature Radius of Cylinder Pad on Fretting Fatigue in High Strength Steel

Lee, SK
Professor, Dong-A University, Saha-gu, Pusan

Nakazawa, K
Senior Researcher, Research Team Leader, and Senior Researcher, National Research Institute for Metals, Tsukuba,

Sumita, M
Senior Researcher, Research Team Leader, and Senior Researcher, National Research Institute for Metals, Tsukuba,

Maruyama, N
Senior Researcher, Research Team Leader, and Senior Researcher, National Research Institute for Metals, Tsukuba,

Pages: 14    Published: Jan 2000

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Abstract

Fretting fatigue of high strength steel was studied at various contact loads using bridge-type fretting cylindrical pads with various contact curvature radii. The fretting fatigue life showed a minimum at a certain contact load irrespective of the pad radius even though the frictional force increased monotonously with contact load. At a high contact load, the fretting fatigue life remained almost unchanged with a change in pad radius. At a low contact load, however, the fretting fatigue life increased with an increase in pad radius even though the frictional force was independent of the radius.