Electromechanical Modelling and Multi Faults Diagnosis of Straight Bevel Gear Pair with Experimental Validation

The paper presents the electromechanical modelling of straight bevel gear pair with multiple fault conditions such as healthy tooth, chipped tooth, and missing tooth. The time-varying mesh stiffness (TVMS) of straight bevel gear pair is developed analytically using Tredgold approximation. The developed model is simulated by incorporating TVMS value at different fault conditions one by one to study the system’s dynamic characteristics.

In this study, the severity of multiple faults are effectively shown by vibration responses in time and frequency domain. The simulated results are compared and verified with experimental results under multiple fault conditions.

The comparative results show that the developed model successfully give similar trend like experiment. The paper may provide some important understanding about the dynamic behaviour characteristics of straight bevel gear system under different fault conditions.