This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Tagliavia, G. Articles by Gupta, N. Search for Related Content Social Bookmarking                         What's this?

Vinyl Ester—Glass Hollow Particle Composites: Dynamic Mechanical Properties at High Inclusion Volume Fraction

Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York, University Six MetroTech Center, Brooklyn, NY 11201, USA

M. Porfiri

Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York, University Six MetroTech Center, Brooklyn, NY 11201, USA, mporfiri{at}poly.edu

N. Gupta

Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York, University Six MetroTech Center, Brooklyn, NY 11201, USA

This study entails the analysis of dynamic mechanical properties of hollow particle filled composites, called syntactic foams. A theoretical model is developed to predict the dynamic mechanical behavior of composite materials containing particle volume fraction up to the packing limit. The modeling approach is based on a differential scheme that extrapolates the properties of infinitely dilute dispersions of hollow particles (microballoons) to high inclusion volume fraction. The model is capable of predicting storage modulus and loss tangent in a wide frequency band of mechanical vibrations. Theoretical predictions are validated with experimental results on 16 compositions of vinyl ester—glass microballoon syntactic foams. Vibration methods are used to assess the dependence of dynamic mechanical properties of syntactic foams on microballoon wall thickness and volume fraction. Theoretical predictions are in close agreement with experimental findings over a wide range of vibration frequencies. Results show that loss tangent generally decreases as the inclusion volume fraction increases and is almost unaffected by microballoon wall thickness and that storage modulus increases with increasing microballoon wall thickness. Therefore, the loss tangent and the storage modulus can be tailored by means of microballoon volume fraction and wall thickness.

Key Words: hollow particles • syntactic foams • vibration • damping • differential scheme.

Journal of Composite Materials, Vol. 43, No. 5, 561-582 (2009)
DOI: 10.1177/0021998308097683


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?