Composites have become preferred material for weight reduction in automobile. Hybrid composite materials are used in many engineering applications for their versatile properties like lightweight, s...

Hybrid composites for automotive applications - A review

During the diesel engine combustion process, soot particles are produced and are either exhausted into the atmosphere or absorbed by the engine's lubricant. Soot-contaminated lubricant has ...

/pdf/the-effects-of-soot-contaminated-engine-oil-on-wear-and-3gew263tmm.pdf

The effects of soot-contaminated engine oil on wear and friction: A review:

Surface textures have been of great interest in the tribology community with nearly 1500 papers published on this topic in the past two decades. With pursuit of low emissions and environmental sustainability, the application of surface texturing to mechanical systems to lower friction and control wear is attracting increasing attention. There is no doubt that certain textured surface can have a beneficial effect on tribological performance but it is widely agreed that the optimization of textures should be carried out based on specific applications requirements. The purpose of this review article is to summarize the current state of the art in surface texturing applied to mechanical applications (cutting tools, piston-ring & cylinder liners, sealing and journal bearings) from the following aspects: application requirements, numerical/ experimental testing and validations, and tribological performance of textured surfaces (wear and friction), as well as limitations in texture designs according to certain applications. Patterns/grooves in micron-scale are the most typical shapes been studied, and benefits of partial texturing are applicable for most of these mechanical applications. Friction reduction of up to 34.5% in cutting tools, 82% in piston-ring & cylinder-liner, 65% in seals and 18% in journal bearings have been observed by experimental tests. Based on primary evidence from the literature, the last section provides general suggestions on current gaps in understanding and modelling and suggests future research directions.

https://iopscience.iop.org/article/10.1088/2051-672X/abb6d0/pdf

Tribological performance of surface texturing in mechanical applications—a review

The design of complex mechanical components is a time-consuming process which involves many design variables with multiple interacted objectives and constraints. Traditionally, the design process of mechanical components is performed manually depending on the intuition and experience of the designer. In recent decades, automatic methods have been proposed to effectively search diverse and large parameter spaces. There is a growing interest in design optimization of mechanical systems using metaheuristic algorithms to improve the product lifecycle and performance and minimize the cost. Nowadays, there is a growing interest in design optimization of mechanical systems using metaheuristic algorithms to improve the product lifecycle and performance and minimize the cost. This review article demonstrates the applications of different metaheuristic algorithms in enhancing the design process of different mechanical systems. First, the basic concepts of common used metaheuristic algorithms are introduced. Then the applications of theses algorithms in optimization of different mechanical systems are discussed.

Advanced Metaheuristic Techniques for Mechanical Design Problems: Review

Influence of dimple shape on tribofilm formation and tribological properties of textured surfaces under full and starved lubrication

Multi-objective optimization of the two-stage helical gearbox with tribological constraints

This study investigates the feasibility of micro-groove cross hatched textures on Ti6Al4V articulating with Ultra High Molecular Weight Polyethylene (UHMWPE) for a Metal-on-Polymer (MoP) hi...

Feasibility study of micro-groove cross hatched surface texturing on Ti6Al4V for improved biotribological performance in metal-on-polymer hip implant

Macro geometry multi-objective optimization of planetary gearbox considering scuffing constraint

Comprehensive analysis of effects of dynamic load frequency and hydrogenation to instigate White Etching Areas (WEAs) formation under severe sliding condition of bearing steel

P. Ramkumar

Papers

Multi-objective optimization of the two-stage helical gearbox with tribological constraints

Feasibility study of micro-groove cross hatched surface texturing on Ti6Al4V for improved biotribological performance in metal-on-polymer hip implant

Macro geometry multi-objective optimization of planetary gearbox considering scuffing constraint

Comprehensive analysis of effects of dynamic load frequency and hydrogenation to instigate White Etching Areas (WEAs) formation under severe sliding condition of bearing steel

Replication of white etching area evolution using novel modified dynamic load pin-on-disc tribometer on bearing steel