Defects, Constitutive Behavior and Continuum Toughness Considerations for Weld Integrity Analysis.

Abstract

The failure load of a butt welded T-frame with a lack of fusion defect is predicted and compared with experimental data. Energy density concepts are used to quantitatively describe the material toughness at the continuum scale. Particular attention is given to the determination of base metal and weld metal uniaxial stress-strain curves valid for large deformation. Finite element results are used to predict the location where the energy density first reaches a critical value, and the corresponding applied load. The predicted initiation site and load compares favorably with the experiment. Keywords: Weld defects, Fracture, Energy density, True stress-true strain curve.

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Document Details

Document Type
Technical Report
Publication Date
Jul 21, 1987
Accession Number
ADA183388

Entities

People

  • Mitchell I. Jolles
  • Peter Matic

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Base Metal
  • Classification
  • Computational Modeling
  • Experimental Data
  • Geometry
  • Laboratory Procedures
  • Laboratory Tests
  • Materials
  • Materials Engineering
  • Mechanics
  • Plastic Explosives
  • Security
  • Standards
  • Strain Gages
  • Stress Strain Relations
  • Three Dimensional
  • Weld Metal

Readers

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