Surface Fatigue Lives of Case-Carburized Gears With an Improved Surface Finish-Reference-Cited by-同舟云学术

Surface Fatigue Lives of Case-Carburized Gears With an Improved Surface Finish

Published:2001-01-18 Issue:4 Volume:123 Page:709-716
ISSN:0742-4787
Container-title:Journal of Tribology
language:en
Short-container-title:

Author:

Krantz T. L.¹,Alanou M. P.²,Evans H. P.²,Snidle R. W.²

Affiliation:

1. U.S. Army Research Laboratory, Glenn Research Center, Cleveland, OH 44135

2. Cardiff University, P.O. Box 685, Cardiff, CF24 3TA, Wales, United Kingdom

Abstract

Previous research provides qualitative evidence that an improved surface finish can increase the surface fatigue lives of gears. To quantify the influence of surface roughness on life, a set of AISI 9310 steel gears was provided with a near-mirror finish by superfinishing. The effects of the superfinishing on the quality of the gear tooth surfaces were determined using data from metrology, profilometry, and interferometric microscope inspections. The superfinishing reduced the roughness average by about a factor of 5. The superfinished gears were subjected to surface fatigue testing at 1.71 GPa (248-ksi) Hertz contact stress, and the data were compared with the NASA Glenn gear fatigue data base. The lives of gears with superfinished teeth were about four times greater compared with the lives of gears with ground teeth but with otherwise similar quality.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/tribology/article-pdf/123/4/709/5646450/709_1.pdf

Reference25 articles.

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