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Volume 36 Issue 3
May. 2022
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Chinese Journal of High Pressure Physics  > 2022  >  36(3): 034102.
XIN Jianting, XI Tao, FAN Wei, HE Weihua, LI Gang, ZHAO Yongqiang, SHUI Min, CHU Genbai. The Spallation Characteristics of Al under Ultra-High Strain Rate Loading Driven by Femtosecond Laser[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034102. doi: 10.11858/gywlxb.20210904
Citation: XIN Jianting, XI Tao, FAN Wei, HE Weihua, LI Gang, ZHAO Yongqiang, SHUI Min, CHU Genbai. The Spallation Characteristics of Al under Ultra-High Strain Rate Loading Driven by Femtosecond Laser[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034102. doi: 10.11858/gywlxb.20210904
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The Spallation Characteristics of Al under Ultra-High Strain Rate Loading Driven by Femtosecond Laser

doi: 10.11858/gywlxb.20210904

  • Laboratory of Science and Technology on Plasma Physics, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

  • Received Date: 17 Nov 2021
  • Rev Recd Date: 07 Dec 2021
  • Accepted Date: 14 Dec 2021
  • Issue Publish Date: 30 May 2022
    Abstract
  • Spall fracture is one of the most important issues in the study of dynamic damage for materials. The damage characteristics and mechanism show obvious phased rules with different loading strain rates. At present, the study on spallation characteristics, laws and mechanisms of materials under ultra-high strain rate has become an important part of the research on dynamic response characteristics of materials under extreme conditions, and is of great significance in the field of engineering application and basic research. In this paper, the spallation experiment of aluminum under femtosecond laser driven shock loading is carried out. The velocity profile on free surface of aluminum is measured by using the self-designed ultrafast chirped frequency domain interferometry system. The spallation strength of aluminum under 109 s−1 strain rate is about 7 GPa, and the variation of spallation strength with strain rate is analyzed.

     

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