Experimental Mechanics

, Volume 52, Issue 9, pp 1559–1563 | Cite as

Comments on the Validity of Test Conditions for Kolsky Bar Testing of Elastic-Brittle Materials

Brief Technical Note

Abstract

Analytic solutions for the time it takes an elastic Kolsky bar sample to achieve stress equilibrium and constant-strain-rate are presented. Using these solutions simple analytic criterion are derived that can be used either a posteriori to check the validity of a conducted experiment or a proiri to provide envelopes of validity under which tests could be conducted correctly on elastic-brittle materials.

Keywords

Kolsky bar Split-Hopkinson bar Constant-strain-rate Sample equilibrium 

Notes

Acknowledgements

The author would like to thank Dr. Micheal Forrestal for discussions and suggestions of references as well as Prof. Weinong Chen, Dr. Bo Song, and Mr. Erik Nishida for valuable discussions. Dr. Richard Lehoucq is also gratefully acknowledged for his guidance on the asymptotic simplifications of the wave equations.

References

  1. 1.
    Kolsky H (2003) Stress waves in solids. Dover PublicationsGoogle Scholar
  2. 2.
    Graff K (1991) Wave motion in elastic solids. Dover PublicationsGoogle Scholar
  3. 3.
    Chen W, Song B (2010) Split Hopkinson (Kolsky) bar: design, testing and applications. Springer VerlagGoogle Scholar
  4. 4.
    Li Z, Lambros J (1999) Determination of the dynamic response of brittle composites by the use of the split hopkinson pressure bar. Compos Sci Technol 59(7):1097–1107. doi: 10.1016/S0266-3538(98)00152-3 CrossRefGoogle Scholar
  5. 5.
    Ravichandran G, Subhash G (1994) Critical appraisal of limiting strain rates for compression testing of ceramics in a split Hopkinson pressure bar. J Am Ceram Soc 77(1):263– 267CrossRefGoogle Scholar
  6. 6.
    Pan Y, Chen W, Song B (2005) Upper limit of constant strain rates in a split hopkinson pressure bar experiment with elastic specimens. Exp Mech 45(5):440–446CrossRefGoogle Scholar
  7. 7.
    Frew D, Forrestal M, Chen W (2001) A split Hopkinson pressure bar technique to determine compressive stress-strain data for rock materials. Exp Mech 41:40–46. doi:10.1007/BF02323102 CrossRefGoogle Scholar
  8. 8.
    Kimberly J, Ramesh K (2011) The dynamic strength of an ordinary chondrite. Meteorit Planet Sci 46(11):1653–1669. doi:10.1111/j.1945-5100.2011.01254.x Google Scholar

Copyright information

© Society for Experimental Mechanics 2012

Authors and Affiliations

  1. 1.The University of Texas at San AntonioSan AntonioUSA

Personalised recommendations