Understanding and prevention of false brinelling failure mode in rolling element bearing applications

假铜化是一种表面损伤，最常发生在受到外部产生的振动的非共形、名义上固定的触点中。所有在运行中依赖非保形滚动-滑动接触的机械零件都可能出现假黄化，但在滚动零件轴承中最常见，特别是在存放在运行机器附近的备用设备中，以及在铁路或海上汽车运输中。假褐化是一种特殊类型的更一般的接触损伤机制，通常被称为微动腐蚀。导致微动和假黄化的根本机制被认为是相似的，但滚动轴承中的假黄化具有额外的复杂性，即振荡运动不是纯粹的滑动，还涉及滚动元件在轴承滚道上的滚动。拟议研究的目的首先是为了更好地了解驱动假性斑纹损伤发生和发展的因素，其次是通过改进轴承设计或润滑剂配方来提供潜在的预防措施。

False brinelling is a type of surface damage that most commonly occurs in non-conformal, nominally stationary contacts that are subjected to externally generated vibration. All machine elements that rely on non-conformal, rolling-sliding contacts in their operation can suffer from false brinelling, but it is most commonly observed in rolling element bearings, especially in stand-by equipment stored near running machines and in the transport of automotive vehicles by rail or sea. False brinelling is a specific type of a more general contact damage mechanism of fretting, often referred to as fretting corrosion. The underlying mechanisms causing fretting and false brinelling are thought to be similar, but false brinelling in rolling bearings has an added complication that the oscillatory motion is not pure sliding but also involves rolling of rolling elements on bearing raceways. The aim of the proposed research is firstly, to gain a better understanding of the factors that drive the onset and progression of false-brinelling damage and secondly, to provide potential preventative measures, be it through the improvements in bearing design or lubricant formulation.