An Investigation of the Fretting Fatigue Strength of BS L65 Aluminum Alloy Under Sinusoidal and Narrow Band Random Cyclic Stressing,
Abstract
Investigation of the fretting fatigue strength of L.65 Aluminum Alloy and S.98 Steel Pads showed that considered on an RMS stress basis, the Random amplitude loading fretting fatigue strength was almost identical with the Sinusoidal constant amplitude fretting fatigue strength. The Sinusoidal fretting fatigue strength was found to be comparable with previous findings. The plain unfretted Random fatigue strength was found to be approximately 65% of the unfretted constant amplitude loading. It would seem that for the conditions investigated, at the same RMS Constant Amplitude and Random stress levels, the crack initiation and rates of crack propagation are different although the nominal lives to failure are similar. The narrow band Random loading spectra was recorded, analysed, and the data used with Miners Cumlative Damage Rule and Sinusoidal fatigue data to predict the unfretted and Fretting Random fatigue lives.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1973
- Accession Number
- AD0769883
Entities
People
- A. J. Billingham
- R. J. Ryman