27 April 2000 Effect of particulate tougheners on the damping of composite laminates
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Rubber is commonly added to composites to increase the toughness. This research investigates adding toughening particles to graphite/epoxy composites for the purpose of increasing the vibrational damping. Adding toughening particles to the interlaminar regions of graphite/epoxy is shown to significantly increase the loss factor, although the increase is much less than can be achieved by embedding a viscoelastic damping layer. The bending stiffness and shear modulus, however, are much higher for the samples with embedded particles than samples with a viscoelastic layer. The addition of damping particles could therefore be used for stiffness-critical parts.
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Janet M. Biggerstaff, Janet M. Biggerstaff, John B. Kosmatka, John B. Kosmatka, } "Effect of particulate tougheners on the damping of composite laminates", Proc. SPIE 3989, Smart Structures and Materials 2000: Damping and Isolation, (27 April 2000); doi: 10.1117/12.384595; https://doi.org/10.1117/12.384595

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