SYMPOSIA PAPER Published: 01 January 1992
STP25828S

Fretting Fatigue in the Power Generation Industry: Experiments, Analysis, and Integrity Assessment

Source

Experimental procedures for carrying out fretting fatigue tests using either the proving ring method or a specifically developed servo-hydraulic biaxial rig are described. S-N curves are generated with and without fretting in order to establish the important variables that can affect fretting fatigue and to rank material fretting combinations that should be avoided. The S-N tests and associated metallography indicate that small cracks, typically 0.25–0.5 mm deep, initiate rapidly at only a small fraction of fatigue life. Fracture mechanics and near-threshold fatigue concepts can be used to predict the conditions for continued growth or arrest of the small fretting defects.

Author Information

Lindley, TC
National Power Technology and Environmental Centre, Leatherhead, Surrey, United Kingdom
Nix, KJ
National Power Technology and Environmental Centre, Leatherhead, Surrey, United Kingdom
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Details
Developed by Committee: E08
Pages: 153–169
DOI: 10.1520/STP25828S
ISBN-EB: 978-0-8031-5214-4
ISBN-13: 978-0-8031-1448-7