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Your search keyword '"Olson, R. T."' showing total 2 results
Start Over Author "Olson, R. T." Topic piezoelectricity
2 results on '"Olson, R. T."'

1. Dynamic comparisons of piezoelectric ejecta diagnostics.

Author

Buttler, W. T., Zellner, M. B., Olson, R. T., Rigg, P. A., Hixson, R. S., Hammerberg, J. E., Obst, A. W., Payton, J. R., Iverson, A., and Young, J.

Subjects
QUANTITATIVE research, PIEZOELECTRICITY, DIFFERENCES, DIAGNOSIS, PHYSICS, TECHNOLOGY
Abstract

We investigate the quantitative reliability and precision of three different piezoelectric technologies for measuring ejected areal mass from shocked surfaces. Specifically we performed ejecta measurements on Sn shocked at two pressures, Pā‰ˆ215 and 235 kbar. The shock in the Sn was created by launching a impactor with a powder gun. We self-compare and cross-compare these measurements to assess the ability of these probes to precisely determine the areal mass ejected from a shocked surface. We demonstrate the precision of each technology to be good, with variabilities on the order of ±10%. We also discuss their relative accuracy. [ABSTRACT FROM AUTHOR]

Published
2007
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2. PRESSURE EFFECTS ON THE EJECTION OF MATERIAL FROM SHOCKED TIN SURFACES.

Author

Zellner, M. B., Grover, M., Hammerberg, J. E., Hixson, R. S., Iverson, A. J., Macrum, G. S., Morley, K. B., Obst, A. W., Olson, R. T., Payton, J. R., Rigg, P. A., Routley, N., Stevens, G. D., Turley, W. D., Veeser, L., and Buttler, W. T.

Subjects
SHOCK waves, TIN, LITHIUM niobate, PIEZOELECTRICITY, RADIOGRAPHY
Abstract

Los Alamos National Lab (LANL) is actively engaged in the development of a model to predict the formation of micron-scale fragments ejected (ejecta) from shocked metals that have surface defects. The LANL ejecta model considers that the amount of ejecta is mainly related to the material's phase on shock release at the free-surface. This effort investigates the relation between ejecta production and shock-breakout pressure for Sn shocked with high explosives to pressures near the solid-on-release/partial-liquid-on-release phase transition region. We found that the amount of ejecta produced for shock-breakout pressures that resulted in partial-liquid-on-release increased significantly compared to that which resulted in solid-on-release. Additionally, we found that the amount of ejecta remained relatively constant within the partial-liquid-on-release, regardless of shock-breakout pressure. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
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