Experimental characterization of damping properties of coated fiber polymer composites
- Wayne State Univ., Detroit, MI (United States)
The dynamic properties of composite materials represented by the damping loss factor and storage modulus are influenced to a large extent by the fiber/matrix interface. Since shear deformation is essential for viscoelastic damping in polymers and large shear strains are generated near the fiber/matrix interface in composites, the use of special viscoelastic polymer fiber coatings is an effective way to improve damping in composites. The purpose of this article is to briefly describe the manufacturing process, specimen preparation, and experimental techniques used in the characterization of the damping loss factor and storage modulus of unidirectional coated fiber polymer composites. A flexural vibration test was used to characterize the longitudinal and transverse damping loss factor and storage modulus of beam specimens of unidirectional coated fiber polymer composites. An extensional vibration test was used to characterize the damping loss factor and storage modulus of the fibers and the polymer coating. Such data is necessary as input in the flexural vibration beam test and the micromechanical analytical models. The damping loss factor and storage modulus were investigated for composites having epoxy as matrix material and glass optical fibers or PVC coated copper wires as reinforcement.
- OSTI ID:
- 577581
- Report Number(s):
- CONF-970431--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Optimization of internal damping in fiber reinforced composite materials
Optimal pultrusion process conditions for improving the dynamic properties of graphite-epoxy composite beams