CRACK INITIATION IN METALLIC MATERIALS

Abstract

The theoretical analysis of hole and notch stress fields was continued. It is shown how the maximum stress of an elliptical crack is orientation dependent. To study the effects of surface condition on the fracture strength of tungsten, bend tests (in three point loading) were conducted on machined specimens from which various amounts of surface material were removed by electropolishing. As-received material showed a marked improvement with increased surface removal while recrystallized material showed a loss in strength for surface removal up to 0.010 in.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1963
Accession Number
AD0420570

Entities

People

  • K. Schroder
  • P. Packman
  • V. Weiss

Organizations

  • Syracuse University

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airframes
  • Alloys
  • California
  • Chemical Engineering
  • Chemistry
  • Corporations
  • Electropolishing
  • Engineering
  • Government Procurement
  • Heat Treatment
  • Materials
  • Stress Strain Relations
  • Stresses
  • Surface Properties
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Mathematics or Statistics