A Computer-Interactive, Single Specimen J-Integral Fracture Toughness Test,

Abstract

This report outlines the development of a computer-interactive, single specimen J-integral fracture toughness test method. The test method was developed on a PDP 11/04 computer and MTS 810 servo-hydraulic test machine using compact tension specimens machined from a NiMoCr gun steel. The report discusses some of the theoretical concepts of the J-integral, particularly those which are relevant to the test method which involves the measurement of area under the load/load-line-displacement curve and the measurement of crack extension. The report also discusses in detail some of the errors within the computer-interactive, single specimen J-integral test method and how these can be reduced. It is concluded that the test method permits the evaluation of the J-integral fracture toughness of high strength steels in accordance with the existing (ASTM) standard. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1986
Accession Number
ADA185027

Entities

People

  • D. S. Saunders
  • I. A. Burch

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Computer Programs
  • Computers
  • Data Analysis
  • Ferrium
  • Gun Barrels
  • Guns
  • Linear Regression Analysis
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Regression Analysis
  • Standards
  • Test Methods

Fields of Study

  • Engineering

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science (Mechanical Engineering).