Investigation for small shear-mode fatigue cracks in bearing steels

S. Okazaki, A. Kusaba, H. Matsunaga, M. Endo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Since flaking and spalling caused by rolling contact fatigue associate with a small crack,a special testing method and machine are required to study the small fatigue crack behavior undershear mode loading. It was found by authors that the behaviors of small shear-mode fatigue cracksfrom the inclusions and from the artificial defects could be successfully observed by applying thefully-reversed torsion coupled with static axial compressive stress. However, the servo-hydraulicfatigue testing machine is quite expensive for purchase and maintenance, and large installationspace is necessary for the hydraulic and cooling systems. Moreover, the presence of axialcompression significantly lowers the frequency of torsional loading, which consequently results inlow testing speed. In this study, a cost-effective, space-saving and high-speed fatigue testingmethod was newly proposed, and the shear-mode fatigue crack growth tests were carried out byusing the developed machine. Based on the obtained experimental data, the potential of the newtesting machine is discussed.

Original languageEnglish
Title of host publicationAdvanced Materials Science and Technology
Pages236-239
Number of pages4
DOIs
Publication statusPublished - Apr 10 2013
Externally publishedYes
Event8th International Forum on Advanced Materials Science and Technology, IFAMST 2012 - Fukuoka City, Japan
Duration: Aug 1 2012Aug 4 2012

Publication series

NameMaterials Science Forum
Volume750
ISSN (Print)0255-5476

Other

Other8th International Forum on Advanced Materials Science and Technology, IFAMST 2012
CountryJapan
CityFukuoka City
Period8/1/128/4/12

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Okazaki, S., Kusaba, A., Matsunaga, H., & Endo, M. (2013). Investigation for small shear-mode fatigue cracks in bearing steels. In Advanced Materials Science and Technology (pp. 236-239). (Materials Science Forum; Vol. 750). https://doi.org/10.4028/www.scientific.net/MSF.750.236