Author
P. Ramkumar
Other affiliations: University of Southampton, Indian Institutes of Technology
Bio: P. Ramkumar is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Surface roughness & Tribometer. The author has an hindex of 7, co-authored 21 publications receiving 100 citations. Previous affiliations of P. Ramkumar include University of Southampton & Indian Institutes of Technology.
Topics: Surface roughness, Tribometer, Tribology, Materials science, Lubrication
Papers
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TL;DR: It is shown that there is a high probability of wear failure for solutions obtained from single objective minimization without tribological constraints and the total power loss of the gearbox is reduced by half when using the multi-objective approach.
31 citations
TL;DR: In this article, 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...
Abstract: 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...
16 citations
TL;DR: In this article, a multi-objective optimization of planetary gearbox using a discrete version of Non-Dominated Sorting Genetic Algorithm (NSGA-II) is presented.
15 citations
TL;DR: In this article, the effect of loading frequency and hydrogenation to instigate the white etching areas (WEAs) formation under severe sliding condition of bearing steel was investigated. And quantitative insights on the catalysing behaviour of individual and concurrent actions of drivers were elucidated.
14 citations
TL;DR: In this article, a novel modified dynamic load Pin-on-disc tribometer design along with the real time hydrogenating lubrication methodology is experimented to replicate white etching area (WEA) formation on bearing steel in laboratory level testing.
13 citations
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TL;DR: In this paper, hybrid composite materials are used in many engineering applications for their versatile properties like lightweight, lightweight, and sustainable properties like low power consumption and high efficiency. But, the composite materials have become preferred material for weight reduction in automobile.
Abstract: 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...
109 citations
15 Oct 2008
TL;DR: In this paper, a diesel engine combustion process, soot particles are produced and are either exhausted into the atmosphere or absorbed by the engine's lubricant during the diesel engine's combustion process.
Abstract: 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 ...
100 citations
16 Sep 2020
TL;DR: The purpose of this review article is to summarize the current state of the art in surface texturing applied to mechanical applications 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.
Abstract: 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.
83 citations
TL;DR: This review article demonstrates the applications of different metaheuristic algorithms in enhancing the design process of different mechanical systems.
Abstract: 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.
54 citations
TL;DR: In this article, the influence of tribofilm formation on the tribological behavior of textured surfaces with oval shapes was measured using a pin-on-plate tribometer.
53 citations