Fretting Corrosion and Fatigue Strength: Brief Results of Preliminary Experiments
- 1 June 1941
- journal article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers
- Vol. 146 (1), 32-38
- https://doi.org/10.1243/pime_proc_1941_146_012_02
Abstract
Fretting corrosion, the conditions under which it occurs, and the possibility of its effect on fatigue strength, are discussed. Fretting corrosion always appears in regions of unknown stress concentration, so that an accurate estimate of the weakening effect due to it cannot be made from combined fretting and fatigue tests. It is suggested that fatigue tests of previously fretted test pieces, analogous to determinations of the percentage loss of fatigue strength by prior stressless chemical corrosion, would be useful. Apparatus for making such tests is described, and preliminary results for a medium-carbon steel and for a nickel-chromium-molybdenum alloy stéel are given. The losses of fatigue strength after fairly severe fretting were 13 per cent and 18 per cent respectively. Although these are not necessarily maximum values, reductions of this order are regarded as justifying further investigation, and the suitability of the apparatus and methods used is considered.Keywords
This publication has 4 references indexed in Scilit:
- An Investigation of the Fretting Corrosion of Closely Fitting SurfacesProceedings of the Institution of Mechanical Engineers, 1939
- Influence of chemically and mechanically formed notches on fatigue of metalsJournal of Research of the National Bureau of Standards, 1934
- Stress-Concentration Phenomena in Fatigue of MetalsJournal of Applied Mechanics, 1933
- Model Testing as Applied to Strength of MaterialsJournal of Applied Mechanics, 1933