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Further Understanding of Rolling Contact Fatigue in Rolling Bearings

对滚动轴承滚动接触疲劳的进一步认识

基本信息

批准号：
1984117
负责人：
金额：
--
依托单位：
University of Southampton
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1984117
关键词：
Further Understanding Rolling Contact Fatigue

项目摘要

Rolling element bearings have been widely used in automotive, industrial, marine, and aerospace applications. Modern rolling bearings have extremely long lives and typically fail through rolling contact fatigue (RCF) mechanisms due to material failure caused by the application of repeated cyclic stresses to a small volume of material.Rolling contact fatigue can manifest by the formation of microstructural damage such as dark etching regions (DERs) and white etching bands (WEBs) under medium to high contact pressures and high rolling cycles. Many studies have been conducted to investigate the features in DERs and WEBs as well as their formation mechanisms over the past few decades. However it is still unclear how the operating conditions and material properties are related to the rate of failure due to DER and WEB as well as causes of the specific angles seen in WEBs. This project aims to further understand rolling contact fatigue especially the formation mechanisms and drivers of DER and WEBs by forensic analysis of material degradation processes under RCF conditions.The successful candidate will work closely with the Tribology Centre (nCATS) and the engineering materials group within the University as well as the Schaeffler Group in Germany.Applicants with strong mechanical engineering (tribology, materials, lubrication, etc.) background are welcome to apply for the studentship or get in touch to find more details about this research project.

滚动轴承广泛应用于汽车、工业、船舶和航空航天领域。现代滚动轴承具有极长的使用寿命，并且通常通过滚动接触疲劳（RCF）机制失效，这是由于对少量材料施加重复循环应力而导致的材料失效。滚动接触疲劳可以通过在中等至高接触压力和高滚动循环下形成微结构损伤（例如，暗蚀刻区域（DER）和白色蚀刻带（WEB））来表现。在过去的几十年里，人们对DERs和WEBs的特征及其形成机制进行了大量的研究。然而，目前还不清楚操作条件和材料特性如何与DER和WEB以及WEBs中所见特定角度的原因引起的故障率相关。该项目旨在通过对RCF条件下材料降解过程的法医分析，进一步了解滚动接触疲劳，特别是DER和WEBs的形成机制和驱动因素。成功的候选人将与摩擦学中心（nCATS）和大学内的工程材料小组以及德国的舍弗勒集团密切合作。（摩擦学、材料、润滑等）欢迎有背景的人士申请助学金或联系我们以了解有关该研究项目的更多详细信息。