Evaluation of gear pitting severity by using various condition monitoring indicators

Camelia Rodica Sfetcu; Zoltan Korka; Alin Virgil Bloju; Dalina Elena Traistaru; Corneliu Hrimiuc

doi:10.14232/analecta.2022.1.34-41

Authors

Camelia Rodica Sfetcu Babeș-Bolyai University
Zoltan Korka Babeș-Bolyai University https://orcid.org/0000-0002-3322-5076
Alin Virgil Bloju Babeș-Bolyai University https://orcid.org/0000-0001-6322-8713
Dalina Elena Traistaru Babeș-Bolyai University
Corneliu Hrimiuc Babeș-Bolyai University

DOI:

https://doi.org/10.14232/analecta.2022.1.34-41

Abstract

Fault detection techniques based on vibration measurement are implemented to identify in an early stage failures appearing in gear transmissions. Condition monitoring indicators (CMI), like: Root Mean Square (RMS), Crest Factor, Kurtosis, FMO, FM4, Energy ratio, Energy operator, NA4 or NB4, are used to estimate the level of gear faults such as pitting, cracks, spalling, scuffing or scoring. However, in is multitude of indicators, the question that arises is: which CMI is the most sensitive in estimating the severity of defects? Thus, this paper presents an extensive comparison between the before mentioned indicators computed from vibration signals collected on four pinions with different pitting grades, created by artificial means. The pinions where incorporated in a single helical gearbox and the tests were performed on an open-energy test rig at three different input speeds. This comparative study assesses the receptivity of different condition monitoring indicators towards gear pitting failure.

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