ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 6

High-Speed Compression Testing at Constant True Strain Rates for Hot Working Studies

Fitzsimons, G
Research assistant professor, professor, professor, and research assistant, University of Pittsburgh, Pittsburgh, PA

Kuhn, HA
Research assistant professor, professor, professor, and research assistant, University of Pittsburgh, Pittsburgh, PA

DeArdo, AJ
Research assistant professor, professor, professor, and research assistant, University of Pittsburgh, Pittsburgh, PA

Semple, V
Research assistant professor, professor, professor, and research assistant, University of Pittsburgh, Pittsburgh, PA

Abstract

A simple device that provides control for constant true strain rate compression (or tension) tests in closed-loop servohydraulic testing machines is described. In the present system, it has been used at strain rates up to 20 s⁻¹. Intended for use in hot working studies, the device allows for single-stroke, change-of-rate, and interrupted sequential tests. In the last of these, interruption times as low as 10 to 20 ms may be achieved.

Keywords:
workability, compression tests, strain rate, ductile fracture, hot working

Paper ID: JTE11417J
DOI: 10.1520/JTE11417J
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