✦ LIBER ✦

X-ray Microtomography Analysis of Dynamic Damage in Tantalum

✍ Scribed by J. Bontaz-Carion; Y.-P. Pellegrini

Book ID: 102685774
Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 864 KB
Volume: 8
Category: Article
ISSN: 1438-1656
DOI: 10.1002/adem.200600058

No coin nor oath required. For personal study only.

✦ Synopsis

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.

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## Abstract In materials science X‐ray microtomography has evolved as an increasingly utilized technique for characterizing the 3D microstructure of materials. The fundamentals of X‐ray microtomography experimental methods and the reconstruction and data evaluation processes are briefly described.