Abstract Thanks to their outstanding mechanical properties, Bulk Metallic Glasses (BMGs) are new alternatives traditional crystalline metals for and micromechanical applications including power transmission. However, the tribological properties of BMGs still poorly understood, mostly because amorphous nature induces counter intuitive responses friction wear. In present study, four different (Cu...

Laser shock peening (LSP) is a transient process with laser pulse duration time on the order of 10 ns, real time in situ measurement of laser/material interaction is very challenging. LSP is usually performed in a massively parallel mode to induce uniform compressive residual stress across the entire surface of the workpiece. The purpose of this paper is to investigate the effects of parallel m...

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While sulfir in diesel fuels helps reduce friction and prevents wear and galling in fuel pump and injector systems, it also creates environmental pollution in the form of hazardous particulate and S02 emissions. The environmental concern is the driving force behind industry’s efforts to come up with new alternative approaches to this problem. One such approach is to replace sulfur in diesel fue...

There exists some inconsistence regarding the true residual stress profiles by hard turning and grinding AISI 52100 steel (62 HRc). This study aims to clarify the pressing issues for five surface types: hard turned fresh, hard turned with a white layer, ground fresh, ground with a white layer, and as-heat-treated. The key findings are: (i) hard turned fresh surfaces produce surface compressive ...

The life cycle of any drive train is given by the reliability its individual components, e.g., bearings, gears, and their connections. Lubrication as a part prevents wear caused uncontrolled mixed friction. However, lubricants may interfere in load capacity steel due to chemical physical processes. White etching crack (WEC) failures are one most prominent failure mechanisms supposed be related ...

Quantitative understanding of cutting forces under hard turning conditions is important for thermal modeling, tool life estimation, chatter prediction, and tool condition monitoring purposes. Although significant research has been documented on the modeling of forces in the turning operation in general, turning of hardened materials involves several distinctive process conditions, including neg...