Toughness Characterization and Criteria for Steel in Critical Applications.

Abstract

The fracture toughness of high-strength low-alloy (HSLA) steels and the conventional structural steels can vary over a wide range from an elastic to a plastic performance. Prediction and certification of structural performance is discussed, and a structural-integrity technology which integrates linear elastic-fracture mechanics (LEFM) with the more metallurgically oriented empirical analyses is described. Examples of the critical features of practical test methods are given to illustrate the advantages of using a new test, the Dynamic Test (DT) test, for characterization purposes. Although test results for toughness characterization must be quantitative, the requirements for toughness criteria in material specifications are usually not as restrictive unless structural performance must be certified. Certification of a high level of structural performance will justify the use of high-quality materials. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 28, 1978
Accession Number
ADA079406

Entities

People

  • E. A. Lange

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Calorific Value
  • Fracture (Mechanics)
  • J Integrals
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Plastic Flow
  • Plastic Properties
  • Standards
  • Strain Rate
  • Stresses
  • Structural Integrity
  • Structural Steel
  • Test Methods
  • Transitions
  • Yield Strength

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).