Fracture Testing of Weldments

Abstract

A new and improved apparatus has been designed and built for three point loading of bend bars. A new formula for 'K(sub Ic)' independent of Young's modulus has been derived which fits experimental calibrations and calculations by B. Gross with satisfactory accuracy. A formula is provided by which the requirements for specimen size and notch depth can be calculated for measuring K(sub Ic) for a given yield strength of material. A number of comparisons are shown for the effect of rolling direction on K(sub Ic) for base plate and for several different kinds of welding. The effect of notch position on K(sub Ic) is shown. The slow bend test has advantages of adaptability and simplicity for the purpose at hand.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1964
Accession Number
ADA397047

Entities

People

  • H. E. Romine
  • Herbert J Bernstein
  • Hillary L. Smith
  • J. A. Kies

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Arc Welds
  • Booster Rocket Engines
  • Chemical Analysis
  • Chemistry
  • Crack Propagation
  • Maraging Steels
  • Materials
  • Mechanical Properties
  • Metals
  • Military Research
  • Modulus Of Elasticity
  • Stresses
  • Test Methods
  • Welding
  • Welds
  • Yield Strength

Readers

  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.
  • Regression Analysis.