Implementation of Shaft-Mounted Accelerometer in the Local Fault Diagnosis of Geared Systems

Mohsen Azimi, Eniko T. Enikov, Wyatt Pena

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The goal of this chapter is to implement a wireless shaft-mounted accelerometer to provide a robust signal processing tool able to detect, localize, and assess mechanical irregularities in rotary machineries. For the purpose of experimental studies, a gear testing apparatus is designed and built to acquire vibration signal via both a traditional bearing-mounted accelerometer and the shaft-mounted accelerometer. First, a comparative analysis is outlined to compare the capability of the shaft-mounted and bearing-mounted accelerometers to the feature extraction of the damage. Then the quality of the vibration signal measured by the shaft-mounted accelerometer in different location and directions of the shaft is studied. Afterward, the sensitivity of the shaft-mounted accelerometer to the severity and location of the damage is evaluated by considering different size of one broken tooth and choosing different locations for the fault with respect to the transducer. Finally, the shaft-mounted accelerometer is used to obtain the same experimental results, while the speed is changing, which suggests the proposed approach is also effective towards condition monitoring of the gears under fluctuating load-speed condition.

Original languageEnglish (US)
Title of host publicationSensors and Instrumentation and Aircraft/Aerospace Testing Techniques, Volume 8 - Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023
EditorsChad Walber, Matthew Stefanski, Stephen Seidlitz
Number of pages24
ISBN (Print)9783031349379
StatePublished - 2024
Event41st IMAC, A Conference and Exposition on Structural Dynamics, 2023 - Austin, United States
Duration: Feb 13 2023Feb 16 2023

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


Conference41st IMAC, A Conference and Exposition on Structural Dynamics, 2023
Country/TerritoryUnited States


  • Angle domain averaging
  • Equal angle resampling
  • Local fault
  • Shaft-mounted accelerometer
  • Variable operational condition

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering


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