Diagnostic Feature Comparisons for Experimental and Theoretical Gearbox Failures
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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As part of a combined experimental-theoretical analysis investigation effort related to equipment diagnostic and prognostic feature development an experimental gearbox testbed was previously developed and transitional failure data was obtained for several runs. A finite element model representing the rotating components on the testbed was developed to perform simulations for both healthy and selected gearbox fault conditions. The fault simulations are focused on gear tooth fracture since this was witnessed to be the primary gearbox failure mode during the test runs. Comparisons between the response of several common diagnostic features using both the gearbox testbed experimental data and the simulated data are provided. The knowledge obtained from evaluations of the simulated data sets and the feature comparison studies can be used to develop features with improved physical understanding of underlying mechanisms and optimize preprocessing methods for the existing diagnostic indicators. The results of the comparisons are presented and recommendations for future enhancements to the model are provided.
- Machinery and Tools