INVESTIGADORES
BRINGA Eduardo Marcial
artículos
Título:
The strength of single crystal copper under uniaxial shock compression at 100 GPa
Autor/es:
W.J. MURPHY; A. HIGGINGBOTHAM; G. KIMMINAU; B. BARBREL; E.M. BRINGA; J.A. HAWRELIAK; R. KODAMA; M. KOENIG; W. MCBARRON; M.A. MEYERS; B. NAGLER; N. OZAKI; N. PARK; B.A. REMINGTON; S. ROTHMAN; S.M. VINKO; T. WHITCHER; J.S. WARK
Revista:
JOURNAL OF PHYSICS CONDENSED MATTER
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2010 vol. 22 p. 65404 - 65409
ISSN:
0953-8984
Resumen:
In situ x-ray diffraction has been used to measure the shear
strain (and thus strength) of single crystal copper shocked to 100 GPa
pressures at strain rates over two orders of magnitude higher than those
achieved previously. For shocks in the [001] direction there is a
significant associated shear strain, while shocks in the [111] direction
give negligible shear strain. We infer, using molecular dynamics
simulations and VISAR (standing for 'velocity interferometer system for
any reflector') measurements, that the strength of the material
increases dramatically (to ~1 GPa) for these extreme strain rates.