5 edition of Tourret Symposium on Rolling Contact Fatigue - Performance Testing of Lubricants found in the catalog.
Tourret Symposium on Rolling Contact Fatigue - Performance Testing of Lubricants
May 6, 1977
by John Wiley and Sons / Institute of Petroleum
Written in English
|The Physical Object|
|Number of Pages||260|
A coupled multibody elastic–plastic finite element (FE) model was developed to investigate the effects of surface defects, such as dents on rolling contact fatigue (RCF). The coupled Voronoi FE model was used to determine the contact pressure acting over the surface defect, internal stresses, damage, etc. This study performed the finite element analysis of the cycle of stress intensity factors at the surface initiated rolling contact fatigue crack tip under Hertzian contact stress including an accurate model of friction between the faces of the crack and the effect of fluid inside the crack. A two-dimensional model of a rolling contact fatigue crack has been developed with FRANC-2D by:
As i.- a11 rolling contact devices, surface damage occurs other than wear. On rails, cracks form by a mechanism of rolling contact fatigue, initiating at small areas of local deformation ("squats") in the rail surface, sometimes at "corrugations" which fo-. in a periodic wear pattern with a wavelength of mm. Corrugations also cause noisy. The aim of this experimental study was to ascertain the fatigue failure modes of thermal spray coatings in rolling/sliding contact. These failure modes outline the design requirements of thermal spray coatings for high-stress tribological applications including impact and point or line contact loading. Recently, a number of scientific studies have addressed the fatigue performance and Cited by:
Fatigue lives of rolling element bearings exhibit a wide scatter due to the statistical nature of the rolling contact fatigue failure process. Empirical life models that account for this dispersion do not provide insights into the physical mechanisms that lead to this scatter. A study into effects of surface defects on rolling contact fatigue of brass and rail steel has been undertaken on a twin-disc rolling-sliding test machine with both oil and water lubrication.
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Author of Allied Military Locomotives Of The Second World War, Hedjaz Railway, and Tourret Symposium On Rolling Contact Fatigue Performance Testing Of Lubricants/5(3). Get this from a library. Rolling contact fatigue: performance testing of lubricants: papers presented at the international symposium organized by the Institute of Petroleum, OctoberLondon, England.
[R Tourret; E P Wright; Institute of Petroleum (Great Britain);]. Tourret Symposium on Rolling Contact Fatigue - Performance Testing of Lubricants by R.
Tourret 1 edition - first published in Tubular specimen showing normal and intermediate track positions r Effect on Bearing Fatigue". STOKES, R.J., PARRY, J.S.C., and TORRANCE, A.A.: "A New Rolling Contact Fatigue Test Machine" in Symposium on Performance and Testing of Gear Lubricants and Transmission Fluids".
Tourret and Wright Inst, of Petroleum, London 1 9 8 by: 2. Comparison of different ball fatigue test machines and significance of test results to gear lubrication, in rolling contact fatigue performance testing of lubricants.
In: Tourret R, Wright EP. Paper V(ii) Surface effects in rolling contact fatigue: the role of lubricant additives on the incidence of failure D. Scott Failure under lubricated rolling contact is a fatigue phenomenon.
The role of surface deformation under conditions of point contact on the initiation of failure was investigated using an accelerated service simulation test, surface examination and measurement by: 5. Accelerated Rolling Contact Fatigue Test by a CylindertoBall Rig.
Rolling contact fatigue testing of bearing steels: a symposium American Society for Testing and Materials. Committee A-1 on Steel, Stainless Steel, and Related Alloys Snippet view - An accelerated rolling contact fatigue bench test is used to examine failure mode and performance of silicon nitride rolling elements with and without surface ring cracks.
CERBEC grade NBD silicon nitride ceramic balls (1 1/8 in. size) demonstrated integrity and a quadruple rolling contact fatigue life improvement versus state-of-the-art M steel balls in.
In parallel, the rolling contact fatigue (RCF) performance of those machining conditions is studied on a modified four-ball tester.
The results show that the most aggressively machined specimens have the weakest C-sphere strength and the shortest RCF by: Rolling-Sliding Contact Fatigue of Surfaces with Sinusoidal Roughness Article (PDF Available) in International Journal of Fatigue 90 April with Reads How we measure 'reads'. Surface pitting fatigue life tests were con- ducted with five lubricants, using spur gears made from a single lot of consumable-electrode vacuum melted (CVM) AISI steel.
The gears were case carburized and hardened to a Rockwell C and fin- ish ground. The gear pitch diameter was cm ( in.). ROLLING CONTACT FATIGUE TESTING OF BEARING STEELS Test speed: 5 r p m Lubricant: modified Mobil Jet II Operating temperatures: 70°C (°F) and 30°C (86°F) Radial load: N ( lb) Minimum lubricant film jtm ( /*in.) thickness: Maximum hertz contact stress: G P a ( psi) Contact size: X m m (0.
Rolling element bearings have been used in aerospace applications since their inception. As the industry and the requirements of aerospace applications have evolved, bearing technology, primarily of a materials nature, has evolved simultaneously.
This has necessitated the development of various methods for the testing of rolling contact fatigue. Tallian, T., “Prediction of rolling contact fatigue life in contaminated lubricant: Part II–Experimental”, ASME Trans., Journal of Lubrication Technology,pp. – Google Scholar [Tevaarwerk ].
Melander A () Simulation of the behavior of short cracks at inclusions under rolling contact fatigue loading – specially the effect of plasticity.
In: Hoo JJC & Green WB Jr. (eds) Bearing steels: into the 21st century. American Society for Testing & Materials, West. And, while testing standards publications are abundant, such publications don't deal with the principles behind the tests.
This handbook useful as a stand-alone reference or as a companion to the annual ASTM Book of Standards provides an overview of testing methodologies as well as the applications-related properties being tested.5/5(1). During RCF test, the debris generated due to wear will be trapped inside the cup in the case of four ball machine, where it has an adverse effect on the rolling contact lifetime of test specimen.
In order to compare the test results on two machines, identical transmission oil is used as lubricant. Rolling contact fatigue performance testing of lubricants.
In: Papers presented at the international symposium organized by the Insititute of Petroleum. London: Heydon; The effect of the oil anti-wear additive tricresyl phosphate (TCP) on rolling contact fatigue (RCF) life of advanced bearing steels—AISI VIMVAR M50, CSS 42L, Pyrowearand Cronidur 30 was investigated with silicon nitride balls at °C and at a maximum Hertzian stress of by:.
Rolling contact fatigue (RCF) of rail can be a significant problem affecting safety and maintenance. Rail materials have been optimized to reduce it, but not enough is known about how friction management products applied to the rail affect crack growth.
This study presents experimental results carried out to explore the influence of different lubricants and application orders on wear and pre Cited by: 5.Three new steel balls are then fitted, new oil is added, and the test is continued.
The failure of the lower steel ball is normally due to a fatigue spall on the rolling track. By changing the lower steel balls, the rolling contact stress cycles for the upper silicon nitride ball is Cited by: 8.Purchase Life Cycle Tribology, Volume 48 - 1st Edition.
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