Accession Number : ADA305424

Title :   Strain Rate Effects on Mechanical Properties of Fiber Composites. Part 3.

Descriptive Note : Contractor rept.,

Corporate Author : ILLINOIS INST OF TECH CHICAGO

Personal Author(s) : Daniel, I. M. ; Liber, T.

PDF Url : ADA305424

Report Date : JUN 1976

Pagination or Media Count : 49

Abstract : An experimental investigation was conducted to determine the strain rate effects in fiber composites. Unidirectional composite specimens of boron/epoxy, graphite/ epoxy, S-glass/epoxy and Kevlar/epoxy were tested at strain rates of up to 27 epsilon/sec to determine longitudinal, transverse and intralaminar (in-plane) shear properties. Ir the longitudinal direction the Kevlar/epoxy shows a definite increase in both modulus and strength with strain rate. In the transverse direction, a general trend toward higher strength with strain rate is noticed. The intralaminar shear moduli and strengths of boron/epoxy and graphite/epoxy show a definite rise with strain rate. (MM)

Descriptors :   *FIBER REINFORCED COMPOSITES, *POLYAMIDE PLASTICS, *STRAIN RATE, *GRAPHITE EPOXY COMPOSITES, SHEAR PROPERTIES, LOAD DISTRIBUTION, GLASS, EPOXY COMPOUNDS, BORON.

Subject Categories : Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE