... Scuffing is a failure mode of contacting surfaces in relative motion that results in deformed topographies, loss of lubricant film, spallation, and potential seizure of machinery. A recent test campaign utilized a ball-on-disk tribometer to evaluate various types of bearing steels...

... Advancing bearing and gear steels and their surface tribology attributes for the future requires paying attention to an enormous number of conflicting tribology mechanisms that can journey down separate performance-limiting wear, scuffing, and fatigue pathways during operation. While a rigorous...

... for service. TRL testing and analysis provide the methodology to design and apply component contact interfaces with greatly enhanced innovation and reduced risk. tribology testing bearing steel traction coefficient abrasive wear run-in polishing scuffing micropitting elastohydrodynamic...

... for an effective testing and modeling methodology. tribology testing traction modeling wear scuffing contact fatigue simulation testing Chapter 47 | Tribology Testing and Modeling Lavern D. Wedeven1 1631 Introduction Tribology is about materials and mechanisms at the interface of mechanical contacts...

... in “boundary lubrication,” a regime for which there are no methods for predicting, or even estimating product life or frictional performance. The testing of sub-components in bench tests or in accelerated tests produces new uncertainties since the role of the many variables that control wear and scuffing...

... Surface analysis of hydraulic gear pumps used in gas turbine failure power generation reveals service life limitations due to gear wear and scuffing. A flexible tribology testing capability (WAM) provides an ability to simulate lubrication and failure mechanisms. A load capacity test protocol...

... antiwear hydraulic fluid biodegradable hydraulic fluid synthetic fire-resistant hydraulic fluid lacquer formation wear corrosion oil deterioration scuffing Satoshi Ohkawa, t Akiko Konishi,2Hiroshi Hatano,3and Dennis Voss4 Piston Pump Failures In Various Type Hydraulic Fluids Reference: Ohkawa, S...

... Base oil type, viscosity, and additive packages of gear lubricants influence gear failures as wear, scuffing, micropitting and pitting as well as power loss and efficiency. Numerous test methods have been developed to quantify these influences. Different test equipment like a gear test rig...

... The paper describes the design of disk machines which are used to simulate the contact and scuffing conditions in high-speed aerospace gears and rolling contact bearings. In ground gears the surface finish of the teeth is predominantly in the direction perpendicular to that in which rolling...

... with tribologically meaningful parameters. The value of this approach is shown by test protocols developed for the evaluation of aircraft propulsion oils. The test protocol simulates the Ryder Gear Test Method, which is based on a scuffing performance criterion. The inclusion of traction (friction) measurements...

.... The relation between tests, such as the Timken, in which one of the two rubbing surfaces is static, and gear or cam and follower tests in which both specimens move, is explored. A preliminary account is given of a new test procedure evolved as a result of the study. Wear tests EP tests scuffing...