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Advances in Acoustics and Vibration pp 215–221Cite as

A Comparative Assessment of In-Operation Modal Analysis and Frequency Domain Decomposition Algorithm Using Simulated Data

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Part of the book series: Applied Condition Monitoring ((ACM,volume 5))

Abstract

Recently a new In-Operation modal identification algorithm has been proposed by one of the authors (INOPMA). The algorithm is based on considering the correlation sequence of the outputs of the structure as an impulse response but with a certain phase shift. A numerical modal appropriation is then performed and it is shown that a mode is isolated at a certain characteristic frequency. The estimation of the modal parameters is then done in a standard way. We investigate in this paper the performance of INOPMA under realistic excitation and we compare it to the Frequency Domain Decomposition algorithm (FDD). The example is a 3DOF system under El-Centro seismic excitation. It is shown that both methods perform equally well.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, ISSAT-University of Sousse, Sousse, Tunisia

    Maher Abdelghani

  2. Department of Civil Engineering, Ferdowsi University, Mashhad, Iran

    Morteza Ghalishooyan & Ahmad Shooshtari

Authors
  1. Maher Abdelghani
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  2. Morteza Ghalishooyan
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  3. Ahmad Shooshtari
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Corresponding author

Correspondence to Maher Abdelghani .

Editor information

Editors and Affiliations

  1. National School of Engineers of Sfax , Sfax, Tunisia

    Tahar Fakhfakh

  2. BP 1173, Natl School of Engineers of Sfax BP 1173, Sfax, Tunisia

    Fakher Chaari

  3. BP 1173, National School of Engineers of Sfax BP 1173, Sfax, Tunisia

    Lasaad Walha

  4. Route MenzelChaker Km 0,5, Preparatory Engineering Inst of Sfax Route MenzelChaker Km 0,5, Sfax, Tunisia

    Moez Abdennadher

  5. BP 1173, Natl Sch of Engineers of Sfax BP 1173, Sfax, Tunisia

    Mohamed Slim Abbes

  6. National Sch Engineers of Sfax , Sfax, Tunisia

    Mohamed Haddar

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Abdelghani, M., Ghalishooyan, M., Shooshtari, A. (2017). A Comparative Assessment of In-Operation Modal Analysis and Frequency Domain Decomposition Algorithm Using Simulated Data. In: Fakhfakh, T., Chaari, F., Walha, L., Abdennadher, M., Abbes, M., Haddar, M. (eds) Advances in Acoustics and Vibration. Applied Condition Monitoring, vol 5. Springer, Cham. https://doi.org/10.1007/978-3-319-41459-1_21

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  • DOI: https://doi.org/10.1007/978-3-319-41459-1_21

  • Published:

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-41458-4

  • Online ISBN: 978-3-319-41459-1

  • eBook Packages: EngineeringEngineering (R0)

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