SHORT-TIME CREEP BEHAVIOR OF CARBON, GRAPHITE, AND SILICA PHENOLIC COMPOSITES AT ELEVATED TEMPERATURES

Abstract

Short-time tensile creep behavior of carbon, graphite, and silica phenolics at elevated temperatures was determined for durations up to 40 sec. A plasma arc was used as a heat source, with test temperatures ranging from 1095 to 2760 C. The results show appreciable amounts of creep strain, especially for the higher temperature and stress levels. The magnitude of these strains suggests that a complete structural analysis should take account of creep and creep rupture. The activation energies of creep for carbon, graphite, and silica phenolics are experimentally identical. Observation of identical creep activation energies for composites based on these widely different fibers is contrary to intuitive expectations, since the fiber is usually thought to be dominant in mechanical behavior. (Author, modified-PL)

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 1970
Accession Number
AD0702436

Entities

People

  • Alfred Ching
  • James D. Buch

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Composite Materials
  • Creep
  • Creep Tests
  • Energy
  • Graphitic Materials
  • Heat Of Activation
  • Materials
  • Materials Science
  • Rocket Engines
  • Rockets
  • Tensile Strength
  • Tensile Stress

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials
  • Theoretical Analysis.