Prediction of Fretting Fatigue Life
Fundamentals, Experimental techniques, Prediction models
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Fretting fatigue occurs at the interface between two contacting bodies that are pressed against each other in the presence of cyclic loads that gives rise to a small relative displacement. This research describes the fretting fatigue phenomena in a comparative way for three different materials (Al7175, Ck45 and Ti6Al4V). It consists in both experimental and analytical work. In order to develop a method that could be useful to estimate the fretting fatigue life, two strain based fatigue models have been chosen (Smith-Watson-Topper and Morrow models). These models were chosen because they are th...
Fretting fatigue occurs at the interface between two contacting bodies that are pressed against each other in the presence of cyclic loads that gives rise to a small relative displacement. This research describes the fretting fatigue phenomena in a comparative way for three different materials (Al7175, Ck45 and Ti6Al4V). It consists in both experimental and analytical work. In order to develop a method that could be useful to estimate the fretting fatigue life, two strain based fatigue models have been chosen (Smith-Watson-Topper and Morrow models). These models were chosen because they are the models that include more intrinsic material properties being then more appropriate to understand either the influence of the material properties as well as to establish a comparison among different materials. It is expected that this work is of interest, as the knowledge of fretting fatigue is therefore essential for any engineer or technologist concerned with design/maintenance of the mechanical equipments, which almost always contains a large number of small amplitude sliding contacts.
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