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Journal of Composite Materials
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Article

Damping Analysis of Unidirectional Glass Fiber Composites with Interleaved Viscoelastic Layers: Experimental Investigation and Discussion

Jean-Marie Berthelot1 Youssef Sefrani2

1 ISMANS, Institute for Advanced Materials and Mechanics, 44 avenue Bartholdi, 72000 Le Mans, France
2 Faculty of Mechanical Engineering, University of Aleppo, Syria

* To whom correspondence should be addressed.


  Abstract
The article investigates the damping of unidirectional glass fiber composites with a single or two interleaved viscoelastic layers. The experimental damping characteristics are derived from flexural vibrations of cantilever beams as a function of the fiber orientation. The experimental results are analyzed considering the modeling developed in a previous article, Berthelot, J.-M. Damping Analysis of Orthotropic Composites with Interleaved Viscoelastic Layers Modelling, Journal of Composite Materials (in press). The analysis considers the variations of Young's modulus and damping of viscoelastic layers with the frequency. Finally, the article presents the effects of Young's modulus and the damping of a viscoelastic layer interleaved in the middle plane of unidirectional laminate. The results are also reported for the case of external viscoelastic layers.

Key Words: vibration damping, unidirectional laminate, interleaved viscoelastic layers, experimental investigation

First published on January 9, 2006, doi:10.1177/0021998306061303

Journal of Composite Materials 2006;40:1911.

A more recent version of this article appeared on November 1, 2006
 This version was published on June 7, 2006
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M. Assarar, A. El Mahi, and J.-M. Berthelot
Damping Analysis of Sandwich Composite Materials
Journal of Composite Materials, June 1, 2009; 43(13): 1461 - 1485.
[Abstract] [PDF]