Prediction of tooth root failure under static loading condition for EN353 steel spur gear

Abstract

Gears are commonly used as mechanical components in power transmissions system. The spur gears are usually subjected to fluctuating loads during power transmitting applications. Gear failures have been identified due to these loads, e.g. Fatigue, impact, wear or plastic deformation. To reduce the failures so much of importance is given to choose suitable material and heat treatment process for reliable design of spur gear. The hardness of the EN353 steel can be improved by austempering heat treatment process. In this paper, the spur gear was investigated for EN353 steel properties with carburizing and austempering heat treatment. Also a gear test rig was designed to analyze the spur gear tooth root for different bending load condition until the tooth root failure in universal testing machine.