18. Elastic Property Determination of WC Spheres and Estimation of Compressive Loads and Impact Velocities that Initiate their Yielding and Cracking

  1. Lisa Prokurat,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. A. A. Wereszczak

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291368.ch18

Advances in Ceramic Armor II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 7

Advances in Ceramic Armor II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 7

How to Cite

Wereszczak, A. A. (2008) Elastic Property Determination of WC Spheres and Estimation of Compressive Loads and Impact Velocities that Initiate their Yielding and Cracking, in Advances in Ceramic Armor II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 7 (eds L. Prokurat, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291368.ch18

Author Information

  1. Ceramic Science and Technology Group Metals and Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN 37831-6068

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080573

Online ISBN: 9780470291368

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Keywords:

  • resonant ultrasound spectroscopy;
  • elastic constants;
  • mechanical resonance;
  • ultrasound;
  • accurate diameter measurement

Summary

Resonant Ultrasound Spectroscopy (RUS) was used to determine the elastic constants E, G, and v of 6.35 mm diameter spheres of high purity WC (Roc500), WC-6%Co, and WC-12%Co. Two of the three elastic constants were independently determined using RUS; consequently, the determination of the third elastic constant proceeded without needing to assume a value for any one of the three. Secondly, 500g Vickers hardness was measured with each of the three compositions, and compressive loads and impact velocities to initiate yielding and cracking in the spheres were estimated from the combination of finite element analysis, the elastic properties measured from the RUS analysis, the measured hardnesses, and assumed tensile strengths for the WC compositions.