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Using Random Response Input in Ibrahim Time Domain

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Special Topics in Structural Dynamics, Volume 6

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Abstract

In this paper the time domain technique Ibrahim Time Domain (ITD) is used to analyze random time data. ITD is known to be a technique for identification of output only systems. The traditional formulation of ITD is claimed to be limited, when identifying closely spaced modes, because of the technique being Single Input Multiple Output (SIMO). It has earlier been showed that when modifying ITD with Toeplitz matrix averaging. Identification of time data with closely spaced modes is improved. In the traditional formulation of ITD the time data has to be free decays or impulse response functions. In this article it is showed that when using the modified ITD random time data can be analyzed. The application of the technique is displayed by a case study, with simulations and experimental data.

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References

  1. Ibrahim SR, Mikulcik EC (1977) A method for the direct identification of vibration parameters from free response. Shock Vib Bull 47:183–196

    Google Scholar 

  2. Ibrahim SR (1977) Random decrement technique for modal identification of structures. J Spacecraft Rockets 14:696–700

    Article  Google Scholar 

  3. Malekjafarian A, Brincker R, Ashory MR, Khatibi MM (2011) Identification of closely spaced modes using ibrahim time domain method. In: Proceedings of the fourth international operational modal analysis conference. Istanbul

    Google Scholar 

  4. Allemang R. J, Brown DL, (1982) A correlation coefficient for modal vector analysis. In: Proceedings of the first modal analysis conference. Orlando

    Google Scholar 

  5. Brüel & Kjaer (2012) Pulse – operational modal analysis vers. 5.3, SVS software

    Google Scholar 

  6. Brincker R, Zhang L (2009) Frequency domain decomposition revisited. In: Proceedings of the third international operational modal analysis conference. Porto Novo

    Google Scholar 

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Author information

Authors and Affiliations

  1. Department of Engineering, Aarhus University, Dalgas Avenue 2, 8000, Aarhus C, Denmark

    Peter Olsen & Rune Brincker

Authors
  1. Peter Olsen
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  2. Rune Brincker
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Corresponding author

Correspondence to Peter Olsen .

Editor information

Editors and Affiliations

  1. University of Cincinnati, Cincinnati, 45221-0018, Ohio, USA

    Randall Allemang

  2. , The Enterprise Program, Michigan Technological University, Townsend Drive 1400, Houghton, 49931, Mississippi, USA

    James De Clerck

  3. , Dept. of Mechanical Engineering, University of Massachusetts Lowell, Riverside St. 197, Lowell, 01854, Massachusetts, USA

    Christopher Niezrecki

  4. & State University, Department of Mechanical Engineering, Virginia Polytechnic Institute, Randolph Hall 114 T, Blacksburg, 24060, Virginia, USA

    Alfred Wicks

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© 2013 The Society for Experimental Mechanics, Inc.

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Olsen, P., Brincker, R. (2013). Using Random Response Input in Ibrahim Time Domain. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Special Topics in Structural Dynamics, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6546-1_29

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  • DOI: https://doi.org/10.1007/978-1-4614-6546-1_29

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-6545-4

  • Online ISBN: 978-1-4614-6546-1

  • eBook Packages: EngineeringEngineering (R0)

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