Inferring the high-pressure strength of copper by measurement of longitudinal sound speed in a symmetric impact and release experiment

5Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Velocity-time histories of free- or windowed-surfaces have been used to calculate wave speeds and hence deduce the shear moduli for materials at high pressure. This is important to high velocity impact phenomena, e.g. shaped-charge jets, long rod penetrators, and other projectile/armour interactions. Historically the shock overtake method has required several experiments with different depths of material to account for the effect of the surface on the arrival time of the release. A characteristics method, previously used for analysis of isentropic compression experiments, has been modified to account for the effect of the surface interactions, thus only one depth of material is required. This analysis has been applied to symmetric copper impacts performed at Sandia National Laboratory's Star Facility. A shear modulus of 200GPa, at a pressure of ∼180GPa, has been estimated. These results are in broad agreement with previous work by Hayes et al. © 2012 American Institute of Physics.

Author supplied keywords

Cite

CITATION STYLE

APA

Rothman, S. D., Edwards, R. J., Vogler, T. J., & Furnish, M. D. (2012). Inferring the high-pressure strength of copper by measurement of longitudinal sound speed in a symmetric impact and release experiment. In AIP Conference Proceedings (Vol. 1426, pp. 104–107). https://doi.org/10.1063/1.3686232

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free