Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Richard H. Gee"'
Publikováno v:
SHOCK COMPRESSION OF CONDENSED MATTER - 2019: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter.
The shock initiation of heterogeneous solid explosives, such as binderized PETN-based explosives, is governed by mesoscopic processes. However, there is a scarcity of direct measurements probing these phenomenon so we employ modeling to improve our u
Publikováno v:
Propellants, Explosives, Pyrotechnics. 42:1352-1357
Long-term effectiveness of high-explosive devices necessitates maintaining a level of specific surface area of initiating powder components within specified margins. This ensures that ignition and detonation performance of the powder does not degrade
Autor:
Graham Kosiba, Richard H. Gee, Rebecca Lindsey, Valerio Pascucci, Aniketh Venkat, Attila Gyulassy, C.D. Grant, J.D. Sain, Amitesh Maiti, W.L. Shaw, P. T. Bremer
Publikováno v:
Computational Materials Science. 182:109782
X-ray computed tomography (CT) is an established non-destructive tool for 3D imaging of multiphasic composites. Numerous applications of X-ray CT in medical diagnosis and materials characterization have been reported, many involving field-specific in
In‐situ Monitoring of Flow‐Permeable Surface Area of High Explosive Powder using Small Sample Masses
Publikováno v:
Propellants, Explosives, Pyrotechnics. 40:419-425
To ensure good performance of high explosive devices over long periods of time, initiating powders need to maintain their specific surface area within allowed margins during the entire duration of deployment. A common diagnostic used in this context
Publikováno v:
Polymer. 55:6085-6090
Experimental determination of transition temperatures for highly crystalline polymers such as poly-1,3-cyclohexadiene (PCHD) can be difficult due to reduced solubility and thermalization processes which occur during data acquisition. In order to faci
Publikováno v:
Propellants, Explosives, Pyrotechnics. 39:24-29
Pentaerythritol tetranitrate (PETN) is an important energetic material and its performance as a secondary explosive depends strongly on the density as well as flow porosity of powdered material, which in turn is governed by the size and surface prope
Publikováno v:
Propellants, Explosives, Pyrotechnics. 37:563-568
Pentaerythritol tetranitrate (PETN) is a secondary explosive used extensively in military and commercial appli- cations. Coarsening of PETN during long-term storage changes the physical properties such as surface area and particle morphology which ar
Publikováno v:
The Journal of Physical Chemistry C. 116:9631-9635
While it is well established that the dominant degradation mechanism for the chemical warfare agent, sarin, is hydrolysis via an SN2 mechanism in aqueous environments, the same cannot be said when hydrophilic or hydrophobic surfaces are present. Util
Autor:
Richard H. Gee, Amitesh Maiti
Publikováno v:
Propellants, Explosives, Pyrotechnics. 36:125-130
Ensuring good ignition properties over long periods of time necessitates maintaining a good level of porosity in powders of initiator materials and preventing particle coarsening. To simulate porosity changes of such powder materials over long period