Low Cycle and Static Bending Strength of Carburized and High Hardness Through Hardened Gear Teeth


Presents a summary of the testing methods employed and the results generated for unidirectional and reverse bending tests of very coarse and medium pitch gear teeth. Actual measured stresses were compared with FEM theoretical stresses and AGMA stress numbers. The purpose of this testing was to evaluate which type of hardening method would yield a gear tooth that could carry the highest load without catastrophic breakage failure in a single, or very low cyclic load application. This testing simulated the output pinion and a planet gear for a jack-up gear drive used on oil drilling platforms. Three separate tests were conducted over a period of time.
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