Generation of Acoustic Emission from the running-in and subsequent micropitting of a mixed-elastohydrodynamic contact
Generation of Acoustic Emission from the running-in and subsequent micropitting of a mixed-elastohydrodynamic contact
复制标题
DOI：
10.1016/j.triboint.2017.11.011
复制
发表时间：
2018-03
影响因子：
6.2
通讯作者：
Simon Hutt;A. Clarke;H. P. Evans
中科院分区：
文献类型：
--
作者：
Simon Hutt;A. Clarke;H. P. Evans
本文介绍了使用声发射研究磨合和随后的微观点蚀的硬化钢表面在混合润滑条件下的一对。这些表面在重载齿轮的典型滚动/滑动条件下一起加载。采用重定位轮廓术测量了快速磨合过程中微坑的发展情况。声发射（AE）被认为是高度敏感的表面形貌在磨合过程中的初始变化，并随后的变化所造成的微坑的形成。然而，AE似乎是敏感的变化，而不是在粗糙的相互作用的基本机制的塑性变形，裂纹扩展和断裂。它的结论是，AE可以提供相当大的洞察条件混合弹性流体动力学接触。
This paper presents the use of Acoustic Emission to study the running-in and subsequent micropitting of a pair of hardened steel surfaces under mixed lubrication conditions. These surfaces were loaded together under rolling/sliding conditions typical of heavily loaded gearing. Relocation profilometry was used to measure the rapid running-in process and the development of micropits. Acoustic emission (AE) was found to be highly sensitive to both the initial changes in surface topography during the running-in process, and to subsequent changes caused by micropit formation. However, AE appears to be sensitive to changes in asperity interaction rather than the underlying mechanisms of plastic deformation, crack growth and fracture. It is concluded that AE can provide considerable insight into conditions in mixed-elastohydrodynamic contacts.