Abstract
This report describes fatigue-induced seeded cracks in spur gears and compares them to cracks created using a more traditional seeding method, viz. notching. Finite element analysis (FEA) compares the effective compliance of a cracked tooth to the effective compliance of a notched tooth where the crack and the notch are of the same depth. In this analysis, cracks are propagated to the desired depth using FRANC2D and effective compliances are computed in ANSYS. A compliance-based feature for detecting cracks on the fatigue tester is described. The initiated cracks are examined using both non-destructive and destructive methods. The destructive examination reveals variability in the shape of crack surfaces.
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Nenadic, N.G., Wodenscheck, J.A., Thurston, M.G., Lewicki, D.G. (2011). Seeding Cracks Using a Fatigue Tester for Accelerated Gear Tooth Breaking. In: Proulx, T. (eds) Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9428-8_29
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DOI: https://doi.org/10.1007/978-1-4419-9428-8_29
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