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Vibration Analysis of Perforated Plates Using Time-Average Digital Speckle Pattern Interferometry

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An Erratum to this article was published on 09 February 2010

Abstract

Digital Speckle Interferometry is a non invasive full-field coherent optical technique used in mechanical vibration measurement. In this research, it is used for tuning resonant frequencies of vibrating plates in order to investigate the dynamical behavior of perforated plates. The plate was excited to resonant vibration by a sinusoidal acoustic source. Fringe pattern produced during the time-average recording of the vibrating plate, for several resonant frequencies were registered. Results of plates fixed at one edge having internal holes and attached masses are presented. Experimental natural frequencies and modal shapes are compared to those obtained by an analytical approximate solution based on the Rayleigh–Ritz method with the use of orthogonal polynomials as coordinate function. A high degree of correlation between computational analysis and experimental results was observed, proving the potentiality of the optical technique as experimental validation of the numerical simulations.

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Acknowledgements

This work was supported by ANPCyT Contrato de Préstamo BID 1728/OC-AR and Consejo de Investigación Project Nº 1571 of the Universidad Nacional de Salta.

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Authors and Affiliations

  1. Facultad de Ciencias Exactas - Grupo de Óptica Láser, CIUNSa - Universidad Nacional de Salta, Av. Bolivia 5150, 4400, Salta, Argentina

    G. G. Romero & E. E. Alanís

  2. Facultad de Ciencias Naturales - Grupo de Óptica Láser, CIUNSa - Universidad Nacional de Salta, Av. Bolivia 5150, 4400, Salta, Argentina

    C. C. Martínez

  3. Facultad de Ingeniería, Universidad Nacional de Salta, Av. Bolivia 5150, 4400, Salta, Argentina

    L. G. Nallim, M. W. Toledo & L. Álvarez

Authors
  1. G. G. Romero
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  2. E. E. Alanís
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  3. C. C. Martínez
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  4. L. G. Nallim
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  5. M. W. Toledo
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  6. L. Álvarez
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Corresponding author

Correspondence to G. G. Romero.

Additional information

An erratum to this article can be found at http://dx.doi.org/10.1007/s11340-010-9331-9

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Romero, G.G., Alanís, E.E., Martínez, C.C. et al. Vibration Analysis of Perforated Plates Using Time-Average Digital Speckle Pattern Interferometry. Exp Mech 50, 1013–1021 (2010). https://doi.org/10.1007/s11340-009-9296-8

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