
Proceedings Paper
A study of damping characteristics of alumina-filled epoxy nano-compositesFormat | Member Price | Non-Member Price |
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Paper Abstract
Damping behavior of polymeric composites with nano structured phases is significantly different from usual
polymer composites. Viscoelastic homopolymers exhibit high material damping over a relatively narrow range of
temperature and frequencies. In many practical situations a polymeric structure is required to possess better
strength and stiffness properties together with a reasonable damping behavior. Viscoelastic polymers show
higher loss factor beyond the glassy region which comes with a significant drop in the specific modulus.
Addition of nano alumina particles to epoxy leads to improved strength and stiffness properties with an increase
in glass transition temperature while retaining its damping capabilities. Experimental investigations are carried
out on composite beam specimen fabricated with different volume fractions of alumina nano particles in epoxy to
determine loss factor, tan δ. Impact damping method is used for time response analysis. A single point Laser is
used to record the transverse displacement of a point on the composite beam specimen. Experimental results are
compared with theoretical estimation of loss factor using Voigt estimation. The effect of interphase is included in
theoretical estimation of loss factor. Passive vibration suppression may be introduced in the polymeric structures
along with improved structural properties by tailored dynamic characteristics using nano alumina particle filled
epoxy composites.
Paper Details
Date Published: 3 April 2013
PDF: 11 pages
Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86891M (3 April 2013); doi: 10.1117/12.2012150
Published in SPIE Proceedings Vol. 8689:
Behavior and Mechanics of Multifunctional Materials and Composites 2013
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)
PDF: 11 pages
Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86891M (3 April 2013); doi: 10.1117/12.2012150
Show Author Affiliations
Priyanka Katiyar, Harcourt Butler Technological Institute (India)
Anand Kumar, Harcourt Butler Technological Institute (India)
Published in SPIE Proceedings Vol. 8689:
Behavior and Mechanics of Multifunctional Materials and Composites 2013
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)
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