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Dynamic Fragmentation of Planetary Materials: Sup-Hypervelocity Ejecta Measurements and Velocity Scaling during Impact Testing Open Access

Descriptions

Author or creator
Hogan, James
Rogers, Robert
Spray, John
Vincent, Gregory
Schneider, Markus
Additional contributors
Subject/Keyword
Brittle failure
Dynamic fragmentation
Ejecta measurements
Particle tracking velocimetry
Non-dimensional analysis
Planetary materials
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Ejecta velocity measurements were made during impacts into solid planetary materials. Ejecta velocity fields overlie each other when normalized by vmax, v50%mass, and v50%KE; these correspond to the maximum velocity and median values of mass and kinetic energy among ejecta velocities. Semi-empirical models were developed to provide predictive capabilities of 10th, 50th, and 90th percentiles of the distributions of mass, momentum and kinetic energy with respect to ejecta velocity. Lastly, a functional equation describing the probability density distribution of mass, momentum and kinetic energy among ejecta velocities was derived. Data and predictive models are valuable in the development and validation of numerical models, where comparison between experiments and simulations rely on well characterized measurements.
Date created
2013
DOI
doi:10.7939/R3FT8DZ54
License information

Rights
Attribution-NonCommerical-NoDerivs 4.0 International
Citation for previous publication
Hogan, James, Spray, John, Rogers, Robert, Vincent, Gregory, & Schneider, Markus. (2013). Dynamic Fragmentation of Planetary Materials: Sup-Hypervelocity Ejecta Measurements and Velocity Scaling during Impact Testing. Planetary and Space Science, 87, 66-77.  http://dx.doi.org/10.1016/j.pss.2013.08.001i

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File title: Velocity scaling- hogan et al. 2013
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