JOM

, Volume 32, Issue 7, pp 23–28 | Cite as

Tensile Testing at Constant True Plastic Strain Rate

  • Craig S. Hartley
  • David A. Jenkins
Technical Article
First Online:

Summary

A closed-loop system for tensile testing at constant true plastic strain rate is described. The system consists of a servohydraulic testing machine for which the actuator velocity is controlled by the instantaneous minimum cross-sectional dimension of the specimen. A closed-loop temperature-control system using resistance heating of the specimen is incorporated to permit tests at elevated temperatures. Examples are given of true stress-strain curves of annealed 304 stainless steel rod and annealed Zircaloy-4 plate, tested parallel and perpendicular to the rolling direction. Problems encountered due to deformation-induced heating, noisy circuitry, and plastic anisotropy are discussed.

Keywords

Flow Curve Plastic Anisotropy Deformation Velocity Large Plastic Strain True Strain Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

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Copyright information

© The Minerals, Metals & Materials Society 1980

Authors and Affiliations

  • Craig S. Hartley
    • 1
    • 3
  • David A. Jenkins
    • 2
  1. 1.State University of New YorkStony Brook
  2. 2.University of FloridaGainesville
  3. 3.University of FloridaUSA

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