A Kolsky Bar with a 50 ns Rise-Time: Application to Rates Beyond 1 M/s

  • Daniel T. CasemEmail author
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


Miniature Kolsky bars, or Split Hopkinson Pressure Bars, are used to increase the strain-rate range accessible by the technique. A number of authors have developed miniature versions in both Kolsky bar and direct impact configurations (Jia and Ramesh, Exp. Mech. 44:445–454, 2004; Casem, A Small Diameter Kolsky bar for High-rate Compression, 2009; Ames, Shock compression of condenser matter, 2005; Casem et al., Exp. Mech. 52:173–184, 2012; Lea and Jardine, Int. J. Plas. 102:41–52; Casem et al., Mims High-rate Mechanical Response of Aluminum Using Miniature Kolsky Bar Techniques, 2018), and rates as high as 1 M/s have been obtained with bars as small as 127 μm diameter (Casem et al., Mims High-rate Mechanical Response of Aluminum Using Miniature Kolsky Bar Techniques, 2018). Even higher rates are possible, provided challenges related to manufacture, alignment, and instrumentation can be overcome.


Kolsky bar Split Hopkinson pressure bar Dispersion Interferometry High strain-rate 


  1. 1.
    Jia, D., Ramesh, K.T.: A rigorous assessment of the benefits of miniaturization in the Kolsky Bar system. Exp. Mech. 44, 445–454 (2004)CrossRefGoogle Scholar
  2. 2.
    Casem, D.T.: A Small Diameter Kolsky bar for High-rate Compression. Proc. of the 2009 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, Albuquerque, NM, June 1–4, (2009)Google Scholar
  3. 3.
    Ames, R.G.: Limitations of the Hopkinson Pressure Bar for High-Frequency Measurements. In: Furnish, M.D., Elert, M., Russell, T.P., White, C.T. (eds.) Shock compression of condenser matter, pp. 1233–1237 (2005)Google Scholar
  4. 4.
    Casem, D.T., Grunschel, S.E., Schuster, B.: Normal and transverse displacement interferometers applied to small diameter Kolsky bars. Exp. Mech. 52, 173–184 (2012)CrossRefGoogle Scholar
  5. 5.
    Lea, L.J., Jardine, A.P.: Characterisation of high rate plasticity in the uniaxial deformation of high purity copper at elevated temperatures. Int. J. Plast. 102, 41–52 (2018)CrossRefGoogle Scholar
  6. 6.
    Casem, D.T., Ligda, J.P., Schuster, B.E., Mims, S.: High-rate mechanical response of aluminum using miniature Kolsky bar techniques, pp. 147–153. Springer International Publishing, Cham (2018)Google Scholar
  7. 7.
    Follansbee, P.S., Franz, C.: Wave propagation in the split- Hopkinson pressure bar. J. Eng. Mat. Tech. 105, 61 (1983)CrossRefGoogle Scholar
  8. 8.
    Gong, J.C., Malvern, L.E., Jenkins, D.A.: Dispersion investigation in the split-Hopkinson pressure bar. J. Eng. Mat. Tech. 112, 309 (1990)CrossRefGoogle Scholar
  9. 9.
    Gorham, D.A., Wu, X.J.: An empirical method for correcting dispersion in pressure bar measurements of impact stress. Meas. Sci, Tech. 7, 1227 (1996)CrossRefGoogle Scholar
  10. 10.
    Bacon, C.: An experimental method for considering dispersion and attenuation in a viscoelastic Hopkinson bar. Exp. Mech. 38, 242 (1998)CrossRefGoogle Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 2020

Authors and Affiliations

  1. 1.US Army Research Laboratory, CCRL-WMP-C, APGAdelphiUSA

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