Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Robert Hixson"'
Autor:
Shawoon K. Roy, Mohamed Trabia, Brendan O’Toole, Robert Hixson, Steven Becker, Michael Pena, Richard Jennings, Deepak Somasoundaram, Melissa Matthes, Edward Daykin, Eric Machorro
Publikováno v:
Shock and Vibration, Vol 2016 (2016)
Hypervelocity impacts generate extreme pressure and shock waves in impacted targets that undergo severe localized deformation within a few microseconds. These impact experiments pose unique challenges in terms of obtaining accurate measurements. Simi
Externí odkaz:
https://doaj.org/article/f49bc25ca42b443b846aaac8dbfde8e8
Autor:
Fabio Settecase, Warren T Kim, Thinesh Sivapatham, Rajkamal Khangura, James Caldwell, Shane Lee, H Robert Hixson, Daniel Hoss, Joey D English
Publikováno v:
Interventional Neuroradiology. :159101992311777
Purpose Previous comparative mechanical thrombectomy device trials reported a substantial crossover rate from first-line aspiration to stent-retriever thrombectomy. A specialized delivery catheter may help track large-bore aspiration catheters to tar
High-pressure melt curve of shock-compressed tin measured using pyrometry and reflectance techniques
Autor:
Robert Hixson, Paul D. Asimow, O. V. Fat'yanov, L. R. Veeser, B. M. La Lone, William Turley, G. D. Stevens
We have developed a new technique to measure the melt curve of a shocked metal sample and have used it to measure the high-pressure solid-liquid phase boundary of tin from 10 to 30 GPa and 1000 to 1800 K. Tin was shock compressed by plate impact usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a82273ee2eac4d25541f22733a7b2d4
https://resolver.caltech.edu/CaltechAUTHORS:20191210-141558657
https://resolver.caltech.edu/CaltechAUTHORS:20191210-141558657
Publikováno v:
Journal of Clinical Neuroscience. 43:202-207
Stereotactic radiosurgery (SRS) is an effective treatment option for intracranial arteriovenous malformations (AVM). However, the treatment of large AVMs (nidus volume ≥12cm3) with single-session SRS alone yields generally poor outcomes. Volume-sta
Publikováno v:
2019 15th Hypervelocity Impact Symposium.
A series of shock loading experiments were conducted on High Entropy Alloy (HEA) samples consisting of Fe/Cr/Mn/Ni in weight percentages of 25.2/23.5/24.8/26.5. Characterizing this transition metal alloy is a first step in understanding the shock com
Publikováno v:
2019 15th Hypervelocity Impact Symposium.
While the equation of state for copper has been fairly well studied, wave speeds at low stress are not as well known. Systematic errors may be present in the lowest stress data presented in the Marsh [1] compendium due to the use of the flash gap met
Publikováno v:
Journal of Dynamic Behavior of Materials. 2:365-371
We have conducted detailed 2-dimensional hydrodynamics calculations to assess the quality of simulations commonly used to design and analyze simple shock compression experiments. Such simple shock experiments also contain data where dynamic propertie
Autor:
Shawoon K. Roy, Mohamed B. Trabia, Deepak Sankar Somasundaram, Robert Hixson, Brendan O'Toole
Publikováno v:
International Journal of Computational Methods and Experimental Measurements. 3:305-315
This article presents a study of the sensitivities of different parameters that affect the accuracy of simulating flyer plate impact experiments. Two approaches are explored: the CTH hydrodynamic and the LS-DYNA smoothed particle hydrodynamic (SPH) c
Publikováno v:
Journal of Applied Physics. 128:045902
Research was undertaken to study spall and subsequent recompaction of oxygen-free high-thermal-conductivity copper using a single-stage large-bore light gas gun capable of planar impacts. Gun experiments were conducted that produced an initial spall
Publikováno v:
Journal of Applied Physics. 127:245901
Spall fracture is a high strain-rate damage phenomenon associated with shock or impulsive loading events. When a material that has been subjected to shock compression is allowed to release, rarefaction waves propagate into the sample and reduce the i