Experimental surface contact fatigue failure analysis of a hypoid pinion used in differential system of a truck

ASİ O.

International Journal of Heavy Vehicle Systems, vol.18, no.1, pp.104-114, 2011 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 1
  • Publication Date: 2011
  • Doi Number: 10.1504/ijhvs.2011.037962
  • Journal Name: International Journal of Heavy Vehicle Systems
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.104-114
  • Keywords: Destructive pitting, Hypoid pinion, Overloading, Severe spalling
  • Uşak University Affiliated: Yes

Abstract

This paper presents a failure analysis of a hypoid pinion used in differential system of a truck. The hypoid pinion had been in service about two years when several teeth failed. An evaluation of the failed hypoid pinion was undertaken to assess its integrity. This included a visual examination, photo documentation, chemical analysis, micro-hardness measurement and metallographic examination. The failure zones were examined with the help of a Scanning Electron Microscope (SEM) equipped with EDX facility. Results indicate that the teeth of the hypoid pinion failed by destructive pitting and severe spalling because of overloading. Copyright © 2011 Inderscience Enterprises Ltd.