博客來Fretting fatigue is the surface damage that occurs at the interface between two components that are under going a small amplitude oscillatory movements. Itresults in a reduction of the material life comparing to the plain fatigue. Most of the previous works were accomplished under a constant applied contact load anda little effort has been done under a variable contact load, while none of these studies have taken the phase difference between the axial and the contact load. Theprimary goal of this study is to investigate the effect of phase difference between axial and contact loads on fretting fatigue behavior of Ti-6Al-4V alloy and todetermine the behavior of this material under combination of fretting fatigue and plain fatigue. The frequency of both axial and contact loads was the same .i.e.10 Hz. During the variable contact load condition; only the axial stress range and the phase angle were varying.
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