Author(s)

C. R. Cvetnic, A. Vawani-Farahani & C. Ravindran

Abstract

Fracture surface study of spur gears subjected to service loading history C. R. Cvetnic, A. Varvani-Farahani & C. Ravindran Dept. Mechanical, Aerospace, and Industrial Engineering, Ryerson University, Toronto, Ontario, Canada Abstract This paper studies the fracture surface of spur gears subjected to fatigue loading. The effect of overloads, metallurgical impurities, post-manufactured surface irregularities, and surface treatments were analyzed using the scanning electron microscope (SEM). The SEM images were compared to aspects of theoretical models in an attempt to outline key factors in designing robust gearing systems with appreciable fatigue life. 1 Introduction Found in almost any consumer product, from automobiles and aircraft to VCR's and electric toothbrushes, gears are a fundamental component to the operation of any mechanical device. The strength and life of gears, in many cases, has a significant influence on our lives. In the case of an aircraft, the fracture of a gear tooth or e

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