In this article a new fretting fatigue life prediction model is presented. The can be classified as variable crack initiation length: the and propagation phases are calculated function of length, among all feasible lengths orientations, that producing minimum considered. proposal direction automatically determined parameters in both phases: propagation. applied to wide experimental campaign tes...

The medical device industry is still seeking answers to the mechanically-assisted corrosion (MAC) problem, which becomes increasingly important due to modularity in design. MAC manifests in various forms, some of which are fretting corrosion, crevice corrosion and stress corrosion. Several studies have been conducted to understand the causes and the factors that affect fretting corrosion. Some ...

The response to cycling contact fatigue load of a WC-6%Co carbide coated with Ti(C,N)/α-Al2O3 CVD multilayer was investigated in dry and wet conditions. Imprints conditions were characterized by small thin cracks forming circumference at the maximum radii imprint. damaged coating totally present final imprint test. Wet indentations showcase an area where α-Al2O3 layer has been removed throughou...

The tension–tension fatigue behavior was investigated for a hybrid composite rod comprised of a unidirectional carbon fiber core and a glass fiber shell. Fatigue tests were performed at three R-ratios and four maximum applied stress levels (MAS) while recording the secant modulus at each cycle, and acoustic emission (AE) sensors were employed to monitor the activation of fatigue mechanisms. Fat...

Biocompatible β-type Ti-45Nb alloy with a low elastic modulus is promising in alleviating the stress shielding effect of Ti-based hard-tissue replacement implants. In this work, ultra-fine-grained (UFG) microstructures different grain sizes were prepared by multi-axial compression (MAC) processing alloys, and mechanical properties fretting wear alloys investigated. The results show that yield s...