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Surface preparation methods to enhance dynamic surface property measurements of shocked metal surfaces

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12 Author(s)
Zellner, M.B. ; Physics Division, Los Alamos National Laboratory, P-23 MS-H803, P.O. Box 1663, Los Alamos, New Mexico 87545, USA ; Vogan McNeil, W. ; Gray, G.T. ; Huerta, D.C.
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This effort investigates surface-preparation methods to enhance dynamic surface-property measurements of shocked metal surfaces. To assess the ability of making reliable and consistent dynamic surface-property measurements, the amount of material ejected from the free surface upon shock release to vacuum (ejecta) was monitored for shocked Al-1100 and Sn targets. Four surface-preparation methods were considered: Fly-cut machine finish, diamond-turned machine finish, polished finish, and ball rolled. The samples were shock loaded by in-contact detonation of HE PBX-9501 on the front side of the metal coupons. Ejecta production at the back side or free side of the metal coupons was monitored using piezoelectric pins, optical shadowgraphy, and x-ray attenuation radiography.

Published in:

Journal of Applied Physics  (Volume:103 ,  Issue: 8 )