Combined fretting, fatigue and wear computations for high performance mechanical transmissions

Abstract

When two components or more than two components are in contact with each other, fretting-fatigue may become a mechanism of failure. Despite of extensive research on the topic, the aspect has remained a challenge. For predicting the occurrence of fretting-fatigue, key factors have to be identified for studying stress and strain. Stress and strain are non-linear mechanical conditions that must be taken into account. Fretting fatigue and wear computations have resulted to bring about better performances and have helped in increasing the life of the components. All the aspects of this process must be carefully understood in order to come up with solid results and proper identification of the lifetime of the component. Fretting fatigue is the process which has been extensively researched and analysed and literature gives the evidence of its vitality in the industrial sector. The process is important to be understood and analysed in the industrial operations and processes as various cohesive metals are used in the operational sectors which maybe victim of fretting fatigue. Fretting fatigue is an important phenomenon of reducing the strength of the machine leading to unexpected errors and failures in the well-structured machine bodies. Tests have been carried out to study the effect on steel, and other metals. Fretting is a process normally considered in the manufacturing and chemical industries where a lot of chemicals are used for producing the final product. As there are many metals involved with huge machineries in use, there is a likely possibility that fretting fatigue may occur as a result of adhesion or cohesion between the two metal surfaces leading to cracks and damages because of which the processes may be halted and leading to huge losses for the industries. For this, it has become vital for the engineers to study close the fretting fatigue process and come up with computational methods for calculating the rate of wearing down in order to ensure that the processes are not halted and the crack initiation and propagation occur at the slowest rate possible. The following paper focuses on combined fretting-fatigue with ear computations for achieving higher level of performance during mechanical transmissions.

Abstractii

Introduction1

Discussion1

What is Fretting-Fatigue?1

Fretting fatigue process4

Corrosion Fatigue5

Pitting Corrosion5

Fretting Corrosion6

Lubricant influencing Fretting process6

The Project7

Aim of the project7

Methodology8

Fretting Fatigue in high cycle regions9

Fretting fatigue analysis in low cycle regions10

Fretting Fatigue Behavior10

Conclusion11

References12

Combined fretting, fatigue and wear computations for high performance mechanical transmissions

Introduction

Several researches have been published in detailed lengths for determination of how fretting, fatigue and wear computations are associated to each other for achieving better outcomes in terms of performance during transmissions mechanically (Hamid & Yahya, 2003). The effect of parameters, cycles, frequency of motion, atmosphere, temperature and other factors have been kept under experiment (Akahori et al., 2004). Results have indicated that fretting and fatigue are influenced by consistent changes in experimental factors. Correlation of the performance of coatings on material under fretting wear and fretting fatigue conditions is rather tenuous, partly because similar contact conditions for fretting fatigue ...