A TENSILE TESTING APPARATUS FOR SHORT FINE FILAMENTS WITH OPTICAL-MECHANICAL STRAIN MEASUREMENT

Abstract

An apparatus was designed and built, which will obtain relatively accurate stress-strain curves of fine metallic filaments and whiskers. The principle of operation is based upon extension of a calibrated spring to apply the load. The strain is measured optically by projecting the gauge marks on two ground-glass plates attached to dial indicators. The magnitude of error in load and strain measurements is very slight. Stress-strain measurements of elastic moduli for two filament metals were made as a final check. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1961
Accession Number
AD0269535

Entities

People

  • H.l. Gegel
  • J.e. Emrick

Tags

DTIC Thesaurus Topics

  • Filaments
  • Indicators
  • Measurement
  • Mechanical Properties
  • Stress Strain Relations
  • Stresses
  • Tensile Testing

Fields of Study

  • Physics

Readers

  • Geodesy
  • Plasma Physics.
  • Structural Health Monitoring of Composite Structures.