๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Low-temperature viscoelastic behavior of unidirectional carbon composites

โœ Scribed by Z. Zhang; G. Hartwig

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
135 KB
Volume
38
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

Even at cryogenic temperatures fiber composites with a polymeric matrix exhibit a viscoelastic behavior. Depending on the fiber arrangement and the mode of loading, there are fiber and matrix dominated properties. For dynamic (or cyclic) loading of fiber composites, the time dependence of moduli and damping behavior are controlled by the matrix. The linear viscoelastic parameters-storage modulus and loss factorhave been measured on unidirectional carbon fiber reinforced polyetheretherketone (PEEK) between 4.2 K and 300 K at frequencies ranging from 10 Hz to 120 Hz. The properties were investigated as well in bending (tension) and shear (torsion) by a free vibrating cantilever beam and a torsion pendulum, respectively. The experimental results in 0ยฐand 90ยฐfiber directions can be used as orthotropic properties for calculation of composites with other fiber arrangement.

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