Advertisement

A Novel Approach for Plate Impact Experiments to Obtain Properties of Materials Under Extreme Conditions

  • Bryan Zuanetti
  • Tianxue Wang
  • Vikas PrakashEmail author
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

In this paper we present a novel approach to conduct normal plate impact experiments at elevated temperatures up to 1000 °C. To enable this approach, custom adaptations are made to the breech-end of the single-stage gas-gun at Case Western Reserve University. These adaptations include a precision-machined steel extension piece, which is strategically designed to mate the existing gun-barrel by providing a high tolerance match to the bore and keyway. The extension piece contains a vertical cylindrical heater-well, which houses a resistive coil heater attached to a vertical stem with axial/rotational degrees of freedom. The assembly enables thin metal specimens held at the front-end of a heat-resistant sabot to be heated uniformly across the diameter to the desired test temperatures. Using the configuration, symmetric normal plate impact experiments are conducted on 99.6% tungsten carbide (no binder) using a heated (room temperature to 650 °C) WC flyer plate and a room temperature WC target plate at impact velocities ranging from 233 to 248 m/s. The measured free-surface particle velocity profiles are used to obtain the elastic/plastic behavior of the impacting WC plates as well as the temperature-dependent shock impedance of the flyer. The results indicate a dynamic strength of approximately 6 GPa for the WC used in the present study (strain-rates of about 105), and a decreasing flyer plate longitudinal impedance with increasing temperatures up to 650 °C.

Keywords

Normal plate impact Incipient plasticity Elevated temperatures Tungsten carbide Hugoniot elastic limit Longitudinal impedance 

Notes

Acknowledgment

The authors would like to acknowledge the financial support of the U.S. Department of Energy through the Stewardship Science Academic Alliance (DE-NA0001989 and DE-NA0002919).

References

  1. 1.
    Prakash, V., Clifton, R.J.: Experimental and analytical investigation of dynamic fracture under conditions of plane strain. in Fracture Mechanics: Twenty-Second Symposium (1990)Google Scholar
  2. 2.
    Liou, N.-S., Okada, M., Prakash, V.: Formation of molten metal films during metal-on-metal slip under extreme interfacial conditions. J. Mech. Phys. Solids. 52(9), 2025–2056 (2004)CrossRefGoogle Scholar
  3. 3.
    Sunny, G., et al.: Effect of high strain rates on peak stress in a Zr-based bulk metallic glass. J. Appl. Phys. 104(9), 093522 (2008)CrossRefGoogle Scholar
  4. 4.
    Zaretsky, E., Kanel, G.I.: Effect of temperature, strain, and strain rate on the flow stress of aluminum under shock-wave compression. J. Appl. Phys. 112(7), 073504 (2012)CrossRefGoogle Scholar
  5. 5.
    Frutschy, K., Clifton, R.: High-temperature pressure-shear plate impact experiments using pure tungsten carbide impactors. Exp. Mech. 38(2), 116–125 (1998)CrossRefGoogle Scholar
  6. 6.
    Grunschel, S.E.: Pressure-shear plate impact experiments on high-purity aluminum at temperatures approaching melt. Doctoral Dissertation. Brown University (2009)Google Scholar
  7. 7.
    Dolan, D.H., et al.: Note: heated flyer-plate impact system. Rev. Sci. Instrum. 85(7), 076102 (2014)CrossRefGoogle Scholar
  8. 8.
    Yuan, F., Liou, N.-S., Prakash, V.: High-speed frictional slip at metal-on-metal interfaces. Int. J. Plast. 25(4), 612–634 (2009)CrossRefGoogle Scholar
  9. 9.
    Prakash, V.: Time-resolved friction with applications to high-speed machining: experimental observations. Tribol. Trans. 41(2), 189–198 (1998)CrossRefGoogle Scholar
  10. 10.
    Tsai, L., Prakash, V.: Structure of weak shock waves in 2-D layered material systems. Int. J. Solids Struct. 42(2), 727–750 (2005)CrossRefGoogle Scholar
  11. 11.
    Zuanetti, B., Wang, T., Prakash, V.: A compact fiber optics-based heterodyne combined normal and transverse displacement interferometer. Rev. Sci. Instrum. 88(3), 033108 (2017)CrossRefGoogle Scholar
  12. 12.
    Zuanetti, B., Wang, T., Prakash, V.: Mechanical response of 99.999% purity aluminum under dynamic uniaxial strain and near melting temperatures. Int. J. Impact. Eng. 113, 180–190 (2018)CrossRefGoogle Scholar
  13. 13.
    Wang, T., Zuanetti, B., Prakash, V.: Shock response of commercial purity polycrystalline magnesium under uniaxial strain at elevated temperatures. J. Dyn. Behav. Mater. 3(4), 497–509 (2017)CrossRefGoogle Scholar
  14. 14.
    Okada, M., et al.: Tribology of high-speed metal-on-metal sliding at near-melt and fully-melt interfacial temperatures. Wear. 249(8), 672–686 (2001)CrossRefGoogle Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  1. 1.Department of Mechanical and Aerospace EngineeringCase Western Reserve UniversityClevelandUSA

Personalised recommendations