INVESTIGATION OF NONDESTRUCTIVE METHODS FOR THE EVALUATION OF GRAPHITE MATERIALS

Abstract

A program of investigation was begun in April 1964, to determine nondestructive methods and techniques for evaluating and characterizing graphite materials. The properties and behavior characteristics of graphite which are important to ablative applications were identified and correlated with the applicable NDT methods and techniques during the first year. Emphasis was directed in verification of the applicability of the various NDT techniques and correlation to characterize graphite in relation to service performance has been an item of major concern. Statistical analysis of these correlations has established the significance of the correlations for predicting the related material properties. An extensive analysis of the application of NDT flaw testing and properties evaluation in regard to quality and reliability is presented. A detailed discussion of infrared technique development activities for measuring thermal properties is also presented. The influence of attenuation and the related effects of frequency distortion on velocity measurements is evaluated and described.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0816960

Entities

People

  • A. W. Shultz
  • G. E. Lockyer
  • S. Serabian
  • S. W. Carter

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Detectors
  • Failure Mode And Effect Analysis
  • Geometry
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Modulus Of Elasticity
  • Packets
  • Reliability
  • Statistical Analysis
  • Surface Temperature
  • Tensile Strength
  • Test And Evaluation
  • Test Methods
  • Wave Packets

Readers

  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design