Accession Number : AD0734658

Title :   Viscoelastic Wave Propagation in Unidirectional Composites.

Descriptive Note : Technical rept. Jul 70-Jul 71,

Corporate Author : WHITTAKER CORP SAN DIEGO CALIF RESEARCH AND DEVELOPMENT DIV

Personal Author(s) : Haener,Juan

Report Date : 31 JUL 1971

Pagination or Media Count : 49

Abstract : The wave propagation in a unidirectional fibrous composite with viscoelasticcomponents has been studied. A METHOD HAS BEEN DEVELOPED BY WHICH THEATTENUATION DUE TO ANY VISCOELASTIC LAW CAN BE DETERMINED. The procedure isbased on axial power flow and radial energy loss, in terms of previouslydetermined displacement fields and viscoelastic material constants. A specialexample using a Voigt solid has been analyzed and the equation for theviscoelastic constant established. (Author-PL)

Descriptors :   (*COMPOSITE MATERIALS, MECHANICAL WAVES), REINFORCING MATERIALS, FIBERS, VISCOELASTICITY, STRESSES, PROPAGATION, DISPERSION RELATIONS, ATTENUATION

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE