Notch Dimensions for Three-Point Bend Fracture Specimens Based on Compliance Analyses

Abstract

Load one was calculated for various three-point bend specimens containing finite width notches and cutouts, using methods of engineering strength of materials and elastic superposition. Comparing compliance results for notched specimens with results for the ideal zero thickness crack promoted the use of two basic notch configurations for fracture testing. A relatively wide notch which could be produced by conventional manufacturing methods resulted in load-line compliance values 10 percent or more above those of the ideal crack case. A narrow notch which could be produced by electric-discharge resulted m compliance values much closer to those of the ideal crack case.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA254641

Entities

People

  • Francis I. Baratta
  • John H. Underwood

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Cracks
  • Displacement
  • Electric Discharges
  • Engineering
  • Equations
  • Fabrication
  • Geometry
  • Information Security
  • Materials
  • Mechanics
  • Military Research
  • Security
  • Simulations
  • Standards
  • Test Methods
  • Thickness

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.