Abstract
Proton Radiography or pRad was invented at Los Alamos National laboratory employing a very high-energy proton beam to acquire up to 37 images of dynamic experiments often driven by high explosives (HE). The high energy of the beam from the Los Alamos Neutron Science Center's 800-mega-electron-volt (MeV) proton linear accelerator (LINAC) provides penetrating power sufficient to resolve fine details (∼65 μn resolution) in materials and structures under extreme conditions that are difficult to discern with other techniques. Three experiments utilizing pRAD to quantitative visualize the dynamic response of materials are presented. High strain-rate (107 s-1) strength measurements are performed by visualizing a Rayleigh-Taylor unstable interface driven by HE products with pRAD tied to material pedigree, processing and phase changes. High-explosive driven ejecta experiments probing the Richtmyer-Meshkov instability in metals employ pRAD's ability to visualize the nuances of unstable spike growth with complementary diagnostics. Experiments impacting and penetrating glass probe the anomalous material response and Equation-of-State under a complex three-dimensional loading using both pRAD's ability to visualize and determine material density. In all three experiments proton radiography provides temporal and spatial visualization of dynamic material deformation and the ability to make in situ measurement of material state.
Original language | English |
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Title of host publication | Dynamic Behavior of Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics |
Pages | 405-411 |
Number of pages | 7 |
DOIs | |
State | Published - 2014 |
Externally published | Yes |
Event | 2013 Annual Conference on Experimental and Applied Mechanics - Lombard, IL, United States Duration: Jun 3 2013 → Jun 5 2013 |
Publication series
Name | Conference Proceedings of the Society for Experimental Mechanics Series |
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Volume | 1 |
ISSN (Print) | 2191-5644 |
ISSN (Electronic) | 2191-5652 |
Conference
Conference | 2013 Annual Conference on Experimental and Applied Mechanics |
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Country/Territory | United States |
City | Lombard, IL |
Period | 06/3/13 → 06/5/13 |
Funding
Los Alamos National Laboratory is operated by LANS, LLC, for the NNSA of the US Department of Energy under contract DE-AC52-06NA25396. M.B. Zellner and D.P. Dandekar wish to acknowledge collaborations with R. Becker, D. Kleponis, P. Patel, J. Runyeon, and T. Bjerke at ARL.
Keywords
- High strain-rate strength
- Penetration
- Proton radiography
- Quantitative visualization
- Richtmyer-Meshkov instability