PMID: 12765380May 27, 2003Paper

Guided waves propagating in sandwich structures made of anisotropic, viscoelastic, composite materials

The Journal of the Acoustical Society of America
Michel Castaings, Bernard Hosten

Abstract

The propagation of Lamb-like waves in sandwich plates made of anisotropic and viscoelastic material layers is studied. A semi-analytical model is described and used for predicting the dispersion curves (phase velocity, energy velocity, and complex wave-number) and the through-thickness distribution fields (displacement, stress, and energy flow). Guided modes propagating along a test-sandwich plate are shown to be quite different than classical Lamb modes, because this structure does not have the mirror symmetry, contrary to most of composite material plates. Moreover, the viscoelastic material properties imply complex roots of the dispersion equation to be found that lead to connections between some of the dispersion curves, meaning that some of the modes get coupled together. Gradual variation from zero to nominal values of the imaginary parts of the viscoelastic moduli shows that the mode coupling depends on the level of material viscoelasticity, except for one particular case where this phenomenon exists whether the medium is viscoelastic or not. The model is used to quantify the sensitivity of both the dispersion curves and the through-thickness mode shapes to the level of material viscoelasticity, and to physically explain...Continue Reading

References

Jan 1, 1992·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·D N Alleyne, P Cawley

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Citations

Jan 2, 2003·The Journal of the Acoustical Society of America·Michel CastaingsBernard Hosten
May 3, 2007·The Journal of the Acoustical Society of America·Wei Luo, Joseph L Rose
Aug 27, 2005·The Journal of the Acoustical Society of America·F Simonetti, M J S Lowe
Sep 1, 2011·The Journal of the Acoustical Society of America·Dmitry ZakharovDilbag Singh
Oct 9, 2009·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Naïma Alaoui IsmailiJean-Louis Izbicki
Mar 3, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Gennady Shkerdin, Christ Glorieux
Mar 23, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Jian MaFrancesco Simonetti
Jul 3, 2016·The Journal of the Acoustical Society of America·Bibi I S MuratPaul Fromme
Jul 16, 2005·The Journal of the Acoustical Society of America·Shi ChenZhaohong Wang

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