Evaluation of Torsional Properties of Spring Materials

Abstract

Torsional properties of various spring materials were evaluated. All materials tested were of solid circular cross section with a diameter of approximately .200 inch. Test specimens were twisted on a torsion tester equipped with an automatic recorder by which torque-angular strain diagrams were plotted. Diagrams were analyzed and measurements made to determine values for proportional and elastic limits. The amount of increase to the proportional and elastic limits that results from strain hardening was determined. The effects of shot peening on the elastic limit were also studied. Strain hardening of the high carbon steels had little effect on the proportional limit, but did produce a substantial increase in the elastic limit. The shot peening operation had little noticeable effect on the torsional properties. Detailed tables of torsional properties are presented and results discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1973
Accession Number
AD0768768

Entities

People

  • Henry P. Swieskowski

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Automatic
  • Carbon Steels
  • Cold Working
  • Crystal Structure
  • Crystals
  • Elastic Properties
  • Hardening
  • Materials
  • Materials Science
  • Mechanical Working
  • Physical Properties
  • Rdx
  • Shot Peening
  • Stainless Steel
  • Strain Hardening
  • Tensile Strength
  • Vanadium

Readers

  • Mechanical Engineering/Mechanics of Materials.