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

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)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1976
Accession Number
ADA305424

Entities

People

  • I. M. Daniel
  • T. Liber

Organizations

  • Illinois Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Air Force
  • Aircrafts
  • Composite Materials
  • Engineering
  • Fibers
  • Jet Propulsion
  • Load Cells
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Navy
  • Shear Properties
  • Strain Gages
  • Stresses

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials