| Issue |
EPJ Web of Conferences
Volume 10, 2010
New Models and Hydrocodes for Shock Wave Processes in Condensed Matter
|
|
|---|---|---|
| Article Number | 00019 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/epjconf/20101000019 | |
| Published online | 19 January 2011 | |
https://doi.org/10.1051/epjconf/20101000019
Spall fracture of copper under loading by shock waves with duration less 1 microsecond
1 FSUE “RFNC – VNIIEF”, Sarov, Russia
2 Los Alamos National Laboratory, Los Alamos NM 87545, USA
a e-mail: root@gdd.vniief.ru
The paper presents results of experimental researches on spall fracture of polycrystalline copper when loading by shock waves with intensity of 20–33 GPa and duration < 1 μs. It is shown that decrease of copper spall strength is observed behind SW front at SW intensity of ∼ 33 GPa (above threshold of formation of heterogeneous deformation bands). When reducing SW intensity to 27 GPa, spall strength is restored. Duration of the softened copper state does not exceed ∼ 0.5 μs. The method for spall strength evaluation is based on measurement of maximum damage in post-test samples.
© Owned by the authors, published by EDP Sciences, 2010
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