Stress Strain Curves from the Ring Test

  • A. N. Bramley
  • N. A. Abdul
Chapter

Summary

A new procedure for the establishment of stress strain curves from the ring test is described. The underlying upper bound theory, due to Avitzur, has been used to produce a very practical calibration chart for easy reduction of experimental data. The validity of the technique has been assessed by conducting ring tests and tensile/compression tests on cold aluminium and hot steel. It has also been shown that varying friction conditions and continuous or series testing methods do not invalidate the technique.

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References

  1. 1.
    B. Avitzur. Forging of hollow discs. Israel J. Tech. (1964) 2, 295.Google Scholar
  2. 2.
    G. Saul, A. T. Male and V. De Pierre. A new method for the determination of material flow stress values under metalworking conditions. USA AFML Tech. Report (1970) TR-70–19.Google Scholar
  3. 3.
    B. Avitzur. Bulge in hollow die forging. Departmental Report Lehigh University (1969).Google Scholar
  4. 4.
    A. T. Male and M. G. Cockcroft. A method for the determination of the coefficient of friction of metals under conditions of bulk plastic deformation. J. I. Metals (1964–65) 93, 38.Google Scholar

Copyright information

© Macmillan Publishers Limited 1975

Authors and Affiliations

  • A. N. Bramley
    • 1
  • N. A. Abdul
    • 2
  1. 1.Department of Mechanical EngineeringLeeds UniversityUK
  2. 2.Department of Mechanical EngineeringLagos UniversityNigeria

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