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Chinese Journal of High Pressure Physics  > 2010  >  24(1): 37-42 .
XIAO Da-Wu, LI Ying-Lei, HU Shi-Sheng. High Temperature SHPB System with Heat Insulation for Short Ceramic Bars[J]. Chinese Journal of High Pressure Physics, 2010, 24(1): 37-42 . doi: 10.11858/gywlxb.2010.01.007
Citation: XIAO Da-Wu, LI Ying-Lei, HU Shi-Sheng. High Temperature SHPB System with Heat Insulation for Short Ceramic Bars[J]. Chinese Journal of High Pressure Physics, 2010, 24(1): 37-42 . doi: 10.11858/gywlxb.2010.01.007
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High Temperature SHPB System with Heat Insulation for Short Ceramic Bars

doi: 10.11858/gywlxb.2010.01.007
  • 1.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China;

  • 2.

    Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China

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  • Corresponding author: XIAO Da-Wu
  • Received Date: 10 Feb 2009
  • Rev Recd Date: 26 May 2009
  • Publish Date: 15 Feb 2010
    Abstract
  • To obtain dynamic behavior of materials at very high temperature, a new experimental system of high temperature split Hopkinson pressure bar (SHPB) is investigated. The steel bars in the inside section of the furnace are replaced with relatively close acoustic impedance matched short ceramic bars. Compared to the traditional high temperature SHPB system, this system can be used under higher loading and higher experimental temperatures, and it is more convenient than the auto-assembling high temperature SHPB system. In addition, the effect of impedance mismatch is investigated by numerical simulation, which proves veracity of the results. The dynamic compressive properties of anti-hydrogen steel at high temperature up to 800 ℃ are tested by this system. Results show that the flow stress of material decreases with the increase of the temperature.

     

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