Volume 35 Issue 5
Sep 2021
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LI Yinghua, CHANG Jingzhen, ZHANG Lin, SONG Ping. Experimental Investigation of Spall Damage in Pure Aluminum with Helium Bubbles[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054101. doi: 10.11858/gywlxb.20210770
Citation: LI Yinghua, CHANG Jingzhen, ZHANG Lin, SONG Ping. Experimental Investigation of Spall Damage in Pure Aluminum with Helium Bubbles[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054101. doi: 10.11858/gywlxb.20210770

Experimental Investigation of Spall Damage in Pure Aluminum with Helium Bubbles

doi: 10.11858/gywlxb.20210770
  • Received Date: 10 Apr 2021
  • Rev Recd Date: 04 May 2021
  • The dynamic fracture behavior of material containing helium bubbles is the focus of many research fields. In this work, the spall damage of pure aluminum containing boron inclusions or helium bubbles is studied by plane impact experiments. The experiments were done for three types of targets: pure aluminum, Al-10B and neutron irradiated Al-10B to obtain helium bubbles. The targets response to the dynamic loading was obtained from the free surface velocity profiles which were measured by dual laser heterodyne velocimetry. The results show that, the spall strength and Hugoniot elastic limit of these targets were calculated. It is found that the spall strength of pure aluminum is 1.28 GPa, and the addition of 10B in pure aluminum reduces the spall strength of material by about 50%. However, Al-10B with helium bubbles is not found to have higher spall strength compared to samples without bubbles, which means that the influence of helium bubble on the dynamic fracture properties of the material is not significant. In addition, the effects of boron and helium bubbles on the Hugoniot elastic pole of aluminum are discussed.

     

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