Environmental Effects on the Mechanical Properties of Glass Fiber/Epoxy Resin Composites, Effect of Static Immersion in Water on the Tensile Strength of Crossply Laminates,

Abstract

The use of glass fiber-reinforced resin composites in primary structures for Army applications has been on the increase in recent years. They are being, or will be, employed in load-bearing areas in several rotor blade systems - the CH-47 modification, the Advanced Attack Helicopter, the Blackhawk, and the AH-1Q Cobra Improved Main Rotor Blade - as well as being used in critical areas in the VIPER system. Despite this projected usage, the questions on the stability of the material properties upon exposure to outdoor environments remain largely unanswered. The outdoor weathering conditions are extremely complex and include such factors as temperature, electromagnetic radiation (for example, sunlight), and moisture. These are considered to be the major elements responsible for the degradation of materials in the atmosphere.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1978
Accession Number
ADA056460

Entities

People

  • Byung Lip Lee
  • Robert E. Sacher
  • Robert W. Lewis

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption
  • Body Weight
  • Composite Materials
  • Glass Fibers
  • Laminates
  • Materials
  • Materials Processing
  • Mechanical Working
  • Modulus Of Elasticity
  • Residual Stress
  • Resins
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Strength
  • Transition Temperature
  • Yield Strength

Readers

  • Aerospace Engineering
  • Materials Science and Engineering.
  • Reinforced Composite Materials