Effects of Prior Aging at 191 C on Creep Response of IM7/BMI 5250-4

Abstract

The creep behavior of IM7/BMI 5250-4 with fiber orientations of [+ or - 45] and [0/90] that were aged in air at 191 C for up to 1000 hours was evaluated. The total weight loss during the aging process was also evaluated. Weight loss due to aging was 0.64% for the [0/90] fiber orientation and 0.72% for the [+ or - 45] fiber orientation. Tensile tests to failure were conducted to establish tensile properties. The [0/90] specimens have a much higher stiffness and Ultimate Tensile Strength (UTS) values than the [+ or - 45] specimens. The tensile tests of the aged specimens revealed that the Ultimate Tensile Strength of the composite decreased and the modulus increased with increasing prior aging time. Creep tests were conducted at 191 C. The creep tests were of 100 hour duration and were followed by unloading to zero stress and 60 hours of recovery at zero stress.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2007
Accession Number
ADA470172

Entities

People

  • Robert A. Salvia

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Carbon Fiber Reinforced Polymer
  • Composite Materials
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Plastics
  • Resins
  • Stress Strain Relations
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy
  • Reinforced Composite Materials