Detection of Coupling Misalignment by Extended Orbits

  • Michael MonteEmail author
  • Florian Verbelen
  • Bram Vervisch
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


In this paper a ‘SpectraQuest’ demonstrator is used to introduce misalignment into a rotating machinery set-up. Depending on the coupling used in the set-up, angular and/or parallel misalignment can be brought in the rotating system. Traditionally, the data captured by accelerometers is transferred into the frequency domain in order to interpret the vibrations measured by the accelerometers. The frequency domain has proven its usefulness but even the time domain can come in handy to draw the right conclusions regarding to misalignment in a rotating set-up. Orbit plots display the integrated data captured by accelerometers, in order to display the movement of the rotating shaft. The influence of the misalignment and imbalance on these orbits will be discussed.


Machinery fault Misalignment Imbalance Full spectrum Orbit 


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Copyright information

© The Society for Experimental Mechanics, Inc. 2015

Authors and Affiliations

  • Michael Monte
    • 1
    Email author
  • Florian Verbelen
    • 1
  • Bram Vervisch
    • 1
    • 2
  1. 1.Department of Industrial Systems and Product DesignUniversity of GhentKortrijkBelgium
  2. 2.Department of Electrical Engineering, Systems and AutomationUniversity of GhentZwijnaardeBelgium

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