Investigation of particle-influenced high load contacts

摩擦和磨损是大多数技术系统设计中的关键因素。特别是在干接触的情况下，可以观察到磨损颗粒在接触表面上的形成、运输和积聚之间的非常密切的相互作用沿着相关的摩擦系数。例如，在热的影响下由压缩磨损材料形成特征结构是决定摩擦学特性的过程。导致所观察到的行为的相应的动力学性质还没有从根本上得到理解。系统的调查，采取全面的观点，这些粒子动力学，包括其属性的依赖关系，并将其链接到全球测量变量的摩擦接触尚未进行，是拟议的研究项目的主题。该项目的目的是更深入地了解摩擦边界层中的这些动态效应，并将这些动态与观察到的摩擦力相关联。特别强调的是放在调查的影响，颗粒的性质（e。G.尺寸和弹性）、几种颗粒类型的混合比、使用的表面和负载的大小。为此目的，对申请人研究所的多个摩擦计进行了研究。各种测量安排跨越广泛的参数值被用来观察粒子运动的影响，并调查这些参数对真实的摩擦学实验的影响。通过组合测量方法，可以将各个测试的一般结果联合收割机结合起来，从而获得对耐磨摩擦接触过程动态的新见解。

Friction and wear are crucial factors in the design of most technical systems. Particularly in the case of dry contacts, a very close interaction between the formation, transport, and accumulation of wear particles on the contact surfaces along with the associated friction coefficients can be observed. For example, the formation of characteristic structures from compressed wear material under the influence of heat is a process that determines tribological properties. The corresponding dynamic properties that bring about the observed behavior are not yet fundamentally understood. Systematic investigations that take a comprehensive view of these particle dynamics, including dependencies on their properties, and link them to global measurement variables of the friction contact have not yet been carried out, and are the subject of the proposed research project. The aim of the project is to gain a deeper understanding of these dynamic effects in the friction boundary layer, and to correlate these dynamics with the observed friction forces. Particular emphasis is placed on investigations into the influence of particle properties (e. g. size and elasticity), the mixing ratio of several particle types, the surfaces used, and the magnitude of loading. For this purpose, studies are carried out on multiple tribometers of the applicant’s Institute. Various measurement arrangements spanning a wide range of parameter values are used to observe the influence of defined parameters on particle motion, and to investigate the influence of these parameters on real tribological experiments. By combining the measuring methods, it is possible to combine the generic findings of the respective tests and thus gain new insights into the process dynamics of wear-resistant friction contacts.