Experimental surface contact fatigue failure analysis of a hypoid pinion used in differential system of a truck
by Osman Asi
International Journal of Heavy Vehicle Systems (IJHVS), Vol. 18, No. 1, 2011

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.

Online publication date: Thu, 29-Jan-2015

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