The Dynamic Response of Graphitic Materials

Abstract

Graphitic materials are receiving consideration for nose tip and heat shield application on advanced reentry vehicles because of their low ablation rate and high strength at elevated temperatures. In selecting materials for design application where impulsive loading is encountered, the dynamic response characteristics of the candidate materials must be known. The present investigation studies the response characteristics of pyrolytic and monolithic graphite: material failure modes, dynamic strength, and relative performance are included. The materials under investigation are monolithic graphites (ATJ, POCO (AXF), and Graphitite G) and pyrolytic graphites (conventional PG, boron-doped PG, and Hafnium-doped PG). Samples are subjected to strain rates of 200 to 2000 in/in/sec and peak stress wave amplitudes between 2000 and 30,000 psi. The results of this investigation have found immediate application in the evaluation of these materials in studies concerned with the simulation of certain weapon effects.

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Document Details

Document Type
Technical Report
Publication Date
Mar 25, 1969
Accession Number
AD0850572

Entities

People

  • August E. Schmidt Jr.

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Dynamic Response
  • Failure Mode And Effect Analysis
  • Government (Foreign)
  • Graphitic Materials
  • Materials
  • Materials Science
  • Mechanical Properties
  • Modulus Of Elasticity
  • Physical Properties
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Strength
  • Wave Propagation
  • Waves

Readers

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