A Single Specimen J-Based Fracture Toughness Test for High Strength Steels

Abstract

A single specimen J-based fracture toughness test has been developed which results in accurate and reliable measurements for a high strength, low alloy steel with several yield strengths. The specimen used is a deeply cracked Charpy specimen tested in slow, three-point bending. A simple plastic stress analysis was performed which identifies a single point on the load-displacement trace at which the J-integral is calculated as an estimate of fracture toughness (KIc). The method can be applied inexpensively and may be used as a quality control measure of fracture toughness.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA118674

Entities

People

  • J. A. Kapp
  • John H. Underwood

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Cracks
  • Ferrium
  • Fracture (Mechanics)
  • J Integrals
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Plastic Deformation
  • Plastic Flow
  • Plastic Properties
  • Standards
  • Statistical Analysis
  • Statistical Tests
  • Stress Analysis
  • Test Methods
  • Yield Strength

Readers

  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design