A Tensile Testing Apparatus for Short Fine Filaments with Optical-Mechanical Strain Measurement

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Report Number: ASD TR 61-168
Author(s): Emrick, J. E., Gegel, H. L.
Corporate Author(s): Directorate of Materials and Processes
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-09
Pages: 14
Contract: Laboratory Research - No Contract
DoD Project: 7021
DoD Task: 73653
Identifier: AD0269535

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.

Provenance: Bombardier/Aero

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