Journal ArticleDOI
A New Machine for Studying the Effects of Sliding and Traction on the Fatigue Life of Point Contacts, with Initial Test Results
TLDR
A new ball fatigue tester, the Twin-Head Five-Ball Machine, developed in order to study the effect of traction and sliding on fatigue life, is described in detail.Abstract:
A new ball fatigue tester, the Twin-Head Five-Ball Machine, developed in order to study the effect of traction and sliding on fatigue life, is described in detail. The novel features offered by the apparatus are presented and their implications discused. Three groups of balls were tested with a synthetic diester oil, at a constant maximum Hertz stress of 6GN m−2 (875,000 psi) in pure rolling and at two levels of sliding and traction. Results show a significant decrease in life for a small level of sliding or traction. Life appears to be better correlated to traction coefficient than to sliding. Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Montreal, Canada, October 8–10, 1974read more
Citations
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Journal ArticleDOI
The Effect of Base Oil Viscosity on Simulated Valve Train Wear
TL;DR: In this paper, the effect of viscosity on wear under conditions associated with boundary lubrication was investigated in a laboratory test designed to simulate the camshaft-lifter contact in an automobile or light truck engine.
Journal ArticleDOI
Rolling contact fatigue of case-hardened chromium steel
TL;DR: In this article, the rolling contact fatigue of case-hardened steel surfaces in lubricated heavily loaded contact was studied, and three different casehardening treatments were tested with a ratio of slide to roll of −5%.
Life analysis of multiroller planetary traction drive
TL;DR: In this paper, a contact fatigue life analysis was performed for a constant ratio, Nasvytis Multi-roller Traction Drive, based on the Lundberg-Palmgren method for rolling element bearing life prediction.
Journal ArticleDOI
Discussion: “Constrained Fatigue Life Optimization of a Nasvytis Multiroller Traction Drive” (Coy, J. J., Rohn, D. A., and Loewenthal, S. H., 1981, ASME J. Mech. Des., 103, pp. 423–428)
TL;DR: In this paper, a multi-roller traction drive was reported with a [B/d6, C/d 6] = [0.322, 0.194] drive life.
of Multiroller Planetary Traction Drive
TL;DR: In this article, a contact fatigue life analysis was performed for a constant speed ratio, Multi-roller Planetary Traction Drive, based on the Lundberg-Palmgren theory for rolling-element bearing life.
References
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Journal ArticleDOI
The Statistical Treatment of Fatigue Experiments
TL;DR: The Statistical Treatment of Fatigue Experiments as mentioned in this paper was the first statistical treatment of fatigue experiments in the field of computer vision, and was published in 1965, Vol. 7, No. 3, pp. 455-455.
Journal ArticleDOI
Stresses Due to Tangential and Normal Loads on an Elastic Solid With Application to Some Contact Stress Problems
J. O. Smith,Chang Keng Liu +1 more
Journal ArticleDOI
Fourth Paper: Shear Behaviour of Elastohydrodynamic Oil Films at High Rolling Contact Pressures
Karlee Johnson,R. Cameron +1 more
TL;DR: In this article, the authors measured the apparent viscosity of E.H.L. oil films at very low sliding speeds, under isothermal conditions, and found that the variation with temperature at high pressure was exponential with an index similar to that at low pressure.