Cooperative Plane Strain Fracture Toughness Tests with C-Shaped Specimens

Abstract

The results of a cooperative test program on plane strain fracture toughness (K sub Ic) testing with C-shaped specimens are reported and discussed. Results of 48 tests by eight laboratories using specimens with two different loading hole locations are included. The effects of specimen geometric variables, such as eccentricity of the inner and outer surfaces and nonperpendicularity of these surfaces with the specimen faces, on the measured and calculated K sub Ic are discussed. The C-shaped specimen results are compared with measured K sub Ic values obtained with standard compact specimens. Results show that both versions of the C-shaped specimen yield accurate values of measured K sub Ic. Normal geometric variations, as would be expected from machining of the specimen from an existing hollow cylinder, have no significant effect on the measured K sub Ic.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1978
Accession Number
ADA072178

Entities

People

  • D. P. Kendall
  • John H. Underwood

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Agreements
  • Diameters
  • Elements
  • Fabrication
  • Geometry
  • Heat Treatment
  • Instructions
  • Materials
  • Measurement
  • Mechanical Properties
  • Military Research
  • Test And Evaluation
  • Test Methods
  • Thickness
  • Toughness

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  • Mechanical Engineering/Mechanics of Materials.