Vibration and Acoustics Emissions Analysis of Helicopter Gearbox, A Comparative Study

Faris Elasha, D. Mba

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


This paper investigates the application of signal separation techniques in detection of bearing faults within the epicyclic module of a large helicopter (CS-29) main gearbox using vibration and Acoustic Emissions (AE). It compares their effectiveness for various operating conditions. Three signal processing techniques including an adaptive filter, spectral kurtosis and envelope analysis, were investigated. In addition, this research discusses the feasibility of using AE in helicopter gearbox monitoring.
Original languageEnglish
Title of host publicationCurrent Trends in Reliability, Availability, Maintainability and Safety
EditorsUday Kumar, Alireza Ahmadi, Ajit Kumar Verma, Prabhakar Varde
Number of pages15
ISBN (Electronic)978-3-319-23596-7
ISBN (Print)978-3-319-23597-4
Publication statusPublished - 15 Dec 2015

Bibliographical note

There is no full text available due to publisher policy.


  • Vibration
  • Acoustics emission
  • Helicopter gearbox


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