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Detection of Shaft Misalignment Using Piezoelectric Strain Sensors

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Abstract

This paper presents preliminary results of a new technique for diagnosing shaft misalignment in rotating machinery. The method is based on the measurement of dynamic strains in the bearing house of the rotating equipment using piezoelectric strain sensors (PSS). The high sensitivity to strain of the PSS allows detection of small dynamic strains in the bearing house of rotating machinery which are closely related to misalignment severity. Tests performed in a machine fault simulator showed that the proposed method has advantages over the conventional diagnosis of misalignment using vibration analysis, particularly at low rotational speed, in which little vibration is produced in terms of acceleration. The method is also useful for distinguishing misalignment from unbalance.

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Authors and Affiliations

  1. Department of Mechanical Engineering, PGMEC (Mechanical Engineering Post Graduate Program), Fluminense Federal University - UFF, 24210-000, Niterói, RJ, Brazil

    A.L. Gama

  2. Brazilian Navy, Ship Design Center - CPN, Propulsion Systems, Arsenal de Marinha do Rio de Janeiro – AMRJ, Ilha das Cobras, Ed. 16, Rio de Janeiro, 20091-907, Brazil

    W.B. de Lima

  3. Exploration & Prodution Department, Centro, PETROBRAS, 20031-170, Rio de Janeiro, RJ, Brazil

    J.P.S. de Veneza

Authors
  1. A.L. Gama
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  2. W.B. de Lima
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  3. J.P.S. de Veneza
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Correspondence to A.L. Gama.

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Gama, A., de Lima, W. & de Veneza, J. Detection of Shaft Misalignment Using Piezoelectric Strain Sensors. Exp Tech 41, 87–93 (2017). https://doi.org/10.1007/s40799-016-0158-x

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  • DOI: https://doi.org/10.1007/s40799-016-0158-x

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