‘Good vibrations’, the science and application of intrinsically damped composite materials

The work presented in this paper shows how the viscoelastic properties of an epoxy resin system can be modified to produce an intrinsically damped composite (IDC) material. Through the addition of chain extension modifiers, peak loss factors of up to 0.4 have been achieved compared to 0.005 for trad...

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Bibliographic Details
Published in:Composite structures 1997-05, Vol.38 (1), p.581-587
Main Authors: Grant, I.D., Lowe, A.T., Thomas, S.
Format: Article
Language:English
Subjects:
Acoustics
Applied sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mechanical properties
Physical properties
Physics
Polymer industry, paints, wood
Properties and testing
Solid mechanics
Structural acoustics and vibration
Structural and continuum mechanics
Technology of polymers
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary:The work presented in this paper shows how the viscoelastic properties of an epoxy resin system can be modified to produce an intrinsically damped composite (IDC) material. Through the addition of chain extension modifiers, peak loss factors of up to 0.4 have been achieved compared to 0.005 for traditional glass reinforced epoxy (GRE) materials. Both dynamic mechanical analysis (DMA) and vibroacoustic measurement techniques were used to determine the loss factors of the IDC materials. The DMA technique was less sensitive to changes in damping due to different fibre orientations. In conclusion, potential areas of application for these novel composite materials are described.
ISSN:0263-8223
1879-1085
DOI:10.1016/S0263-8223(97)00096-2