A Method of Obtaining Isothermal, Constant High Strain Rate Stress-strain Data

  • M. Mohitpour
  • B. Lengyel


A novel forging machine, based on a tubular induction motor, has been tooled up and instrumented to obtain isothermal stress-strain curves to large strains at constant high strain rates, in the range 20–800/sec. The method uses recordings in the high speed compression of right cylindrical specimens and subsequently compensates for strain rate and temperature variations by simple calculations based on quasi-static stress-strain data. The results agree well with those obtained incrementally.


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Copyright information

© Macmillan Publishers Limited 1976

Authors and Affiliations

  • M. Mohitpour
    • 1
    • 2
  • B. Lengyel
    • 3
  1. 1.Metallurgical Engineering DepartmentArya Mehr University of TechnologyTehranIran
  2. 2.Iranian Management and Engineering Group (IMEG)TehranIran
  3. 3.Department of Mechanical EngineeringImperial College of Science and TechnologyLondonUK

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