SYMPOSIA PAPER Published: 01 January 1992
STP25824S

Effect of Contact Pressure on Fretting Fatigue of High Strength Steel and Titanium Alloy

Source

The effect of contact pressure on fretting fatigue behavior has been studied using a high strength steel and a Ti-6Al-4V alloy. In steel, at higher stress amplitude, the fretting fatigue life decreased monotonously with increasing contact pressure. At lower stress amplitude, it exhibited a minimum at a low contact pressure and a maximum at an intermediate contact pressure, then decreased again and became constant at high contact pressures. The fretting fatigue strength at 107 cycles was high at an intermediate contact pressure. In titanium alloy, the fretting fatigue life showed a similar contact pressure dependence. The frictional force increased monotonously with increasing contact pressure. The initiation site of the main crack depended on the contact pressure and had a close relation to the width of stick region at the fretted area. The contact pressure dependence was discussed in terms of stress concentration at the fretted area.

Author Information

Nakazawa, K
National Research Institute for Metals, Tsukuba, Japan
Sumita, M
National Research Institute for Metals, Tsukuba, Japan
Maruyama, N
National Research Institute for Metals, Tsukuba, Japan
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Details
Developed by Committee: E08
Pages: 115–125
DOI: 10.1520/STP25824S
ISBN-EB: 978-0-8031-5214-4
ISBN-13: 978-0-8031-1448-7