Experimental and Analytical Load-Life Relation for AISI 9310 Steel Spur Gears

[+] Author and Article Information
D. P. Townsend, J. J. Coy, E. V. Zaretsky

NASA, Lewis Research Center, Cleveland, Ohio

J. Mech. Des 100(1), 54-60 (Jan 01, 1978) (7 pages) doi:10.1115/1.3453893 History: Received June 22, 1977; Online October 21, 2010


Life tests were conducted at three different loads with three groups of 8.9 cm (3.5 in.) pitch diameter spur gears made of vacuum arc remelted (VAR) AISI 9310 steel. Life was found to vary inversely with load to the 4.3 and 5.1 power at the L10 and L50 life levels, respectively. The Weibull slope varied linearly with maximum Hertz contact stress, having an average value of 2.5. The test data when compared to AGMA standards showed a steeper slope for the load-life diagram.

Copyright © 1978 by ASME
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