Experimental Mechanics

, Volume 40, Issue 3, pp 298–306 | Cite as

Determination of the plastic work converted to heat using radiometry

  • D. Macdougall
Article

Abstract

An improved calibration method for infrared radiometers is developed that has been shown to increase the accuracy of temperature measurement. To validate this new calibration technique, high strain rate compression tests are performed on the aluminum alloy BS 2011 and high strain rate torsion tests are performed on the titanium alloy 90% Ti-6%Al-4%V. The adiabatic temperature rise that occurs during these tests is measured using an infrared radiometer and validated, in the case of the compression tests, using fast response thermocouples. The proportion of plastic work converted to heat, β, is found to increase with plastic strain for both materials, which is similar to previous research. These results challenge the classical assumption that β has a constant value of approximately 0.95.

Key Words

Radiometry plastic work constitutive models high strain rate 

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Copyright information

© Society for Experimental Mechanics, Inc. 2000

Authors and Affiliations

  • D. Macdougall
    • 1
  1. 1.Department of Engineering ScienceOxford UniversityOxfordUK

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