Use of the Contour Method to Determine Autofrettage Residual Stresses: A Proposed Experimental Procedure

Abstract

This work proposes a methodology for the determination of residual stresses in a long section of swage-autofrettaged gun tube by employing the relatively new contour method (CM). The CM involves careful cutting of a component, usually using electric discharge machining (EDM). The main experimental challenge during CM cutting is to minimize further yielding in order to ensure that the stress-relief process is essentially elastic. A methodology for minimizing such yielding is proposed. It is shown that CM could be used alone, or in combination with existing X-ray and/or neutron diffraction methods.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2013
Accession Number
ADA590376

Entities

People

  • Anthony P. Parker
  • Edward Troiano

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Autofrettage
  • Bending Moments
  • Classification
  • Diffraction
  • Electric Discharges
  • Engineering
  • Machining
  • Materials
  • Measurement
  • Neutron Diffraction
  • Radial Stress
  • Residual Stress
  • Residuals
  • Sequences
  • Stresses
  • X Rays

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Pulsed Power and Plasma Physics.
  • Systems Analysis and Design