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Journal Articles Advanced Engineering Materials Year : 2006

X-ray Microtomography Analysis of Dynamic Damage in Tantalum

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Joëlle Bontaz-Carion
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Yves-Patrick Pellegrini

Abstract

With the plate-impact technique, ductile spallation experiments are carried out on Ta at impact velocities 570, 1039 and 1078 m/s. Samples are soft-recovered and analyzed by X-Ray microtomography at the European Synchrotron Radiation Facility. The porosity along the shock direction, and the distribution of the pore volumes are extracted from tri-dimensional reconstructions of the damaged samples. Quantitative assessment of pore coalescence is made via an inverse power-law model for the distribution. The decay exponent we associate to coalescence is of order 1.6 in the sample impacted at 1039 m/s.

Dates and versions

cea-00413020 , version 1 (03-09-2009)

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Joëlle Bontaz-Carion, Yves-Patrick Pellegrini. X-ray Microtomography Analysis of Dynamic Damage in Tantalum. Advanced Engineering Materials, 2006, 8 (6), pp.440-486. ⟨10.1002/adem.200600058⟩. ⟨cea-00413020⟩

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