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Crack Detection and Dynamic Analysis of a Cracked Rotor with Soft Bearings Using Different Methods of Solution Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Differentiating Tooth Root Cracks and Spalls in Planet Gears from Changes in the Transmission Error

Authors : Dikang Peng, Wade A. Smith, Robert B. Randall

Published in: Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM

Publisher: Springer International Publishing

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Abstract

This paper presents the results of transmission error (TE) analysis of spur planetary gearboxes using finite element methods. Two subsystem models were established to study changes in the transmission error caused by planet gear tooth root cracks and spalls. The simulation results reveal that a tooth crack gives changes twice in a planet revolution (crack opening and closing against the sun and ring gears, respectively) while a tooth spall only gives a change once per planet revolution (since the spalled flank only contacts either the sun or the ring). Moreover, the effect of a tooth crack has a duration independent of the size of the crack, and varies with the load. The results of this paper could be used directly as a potential approach to diagnose the type of planet gear fault if the TE can be measured directly, or used in simulations of dynamic responses to develop signal processing methods to extract the information from vibration responses.

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previous chapter Vibration Based Condition Monitoring of Planetary Gearboxes Operating Under Speed Varying Operating Conditions Based on Cyclo-non-stationary Analysis
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Metadata
Title
Differentiating Tooth Root Cracks and Spalls in Planet Gears from Changes in the Transmission Error
Authors
Dikang Peng
Wade A. Smith
Robert B. Randall
Copyright Year
2019
Book
Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM

Print ISBN: 978-3-319-99267-9

Electronic ISBN: 978-3-319-99268-6

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-99268-6_20

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