A5028106899- High-Velocity Impact and Material Behavior
- Energetic Materials and Combustion
- High-pressure geophysics and materials
- Laser-Plasma Interactions and Diagnostics
- Automotive and Human Injury Biomechanics
- Electromagnetic Launch and Propulsion Technology
- Advanced ceramic materials synthesis
- History and Theory of Mathematics
- Fluid Dynamics Simulations and Interactions
- Bone fractures and treatments
- Electrohydrodynamics and Fluid Dynamics
- Concrete Properties and Behavior
- Engineering and Material Science Research
- Fire effects on concrete materials
- Combustion and Detonation Processes
- Gas Dynamics and Kinetic Theory
- Hip and Femur Fractures
- History and Developments in Astronomy
- Boron and Carbon Nanomaterials Research
- Environmental remediation with nanomaterials
- Relativity and Gravitational Theory
- Traumatic Ocular and Foreign Body Injuries
- Disaster Response and Management
- Cellular and Composite Structures
- Planetary Science and Exploration
Sandia National Laboratories
2016-2018
Eglin Air Force Base
2010-2014
United States Air Force Research Laboratory
2013
Abstract We report the development of a new methodology for analyzing CYLEX tests streak images. In these tests, displacement wall an explosive filled cylinder is obtained by backlighting cylinder. The profile imaged through slit and streaked across film record as detonated. A critical step in processing this data spatial calibration extraction from image. Historically has been tedious task it was performed eye with assistance optical comparator. Recently we developed algorithm which...
There is considerable interest in developing a better understanding of the dynamic behavior multicomponent heterogeneous systems. This study investigates and compares response 21% dense aluminum foam, filled with polyvinylidene fluoride (PVDF or Kynar). Experiments were conduced 60 mm bore gun one-dimensional reverse plate impact configuration at velocities ranging from 350 m/s to 2200 m/s. The particle velocity backside thin anvil, also referred as witness plate, was monitored...
Abstract We combined the miniature cylinder expansion test (Mini‐Cylex), with Disk Acceleration Test (DAX) using Type K copper, Picatinny Liquid Explosive, and photonic Doppler velocimetry. estimated CJ state plate reverberation methods at cap. extracted velocities 2, 7, 10 volume expansions to fit Jones‐Wilkins‐Lee Equation of State Gurney velocity tube wall. The also provides an additional method estimate reaction products Hugoniot through knowledge copper Our experiments simulations are...
We report results of Eulerian hydrodynamic simulations detonation shock waves propagating through open cell foams constructed aluminum, polymethylmethacrylate, and lead at approximately 20 % relative density in nitromethane. By varying pore sizes, as well material impedance, we predict the dynamic responses mesoscale using a reactive flow model ALE3D software package. explain predictions profile each explosive system, along with stress-strain response therein. Finally, describe radially...
We report isentropic release states of uniaxial strain experiments and simulations on 6101 T-6 48-50% density open-cell aluminum foam compressed up to 10 GPa. Mesoscale the dynamic response are compared experimental measurements used build continuum constitutive relations. The mesoscale capture Hugoniot behavior in extremely well. resulting relations built from compare favorably those results.
We report the results of uniaxial strain experiments ERG Aerospace aluminum foam, at 50% relative density up to 10 GPa. The reverse ballistic plate reverberation technique was used obtain shock compression states material. In these tests, 6061 T-6 aluminum, oxygen free homogenous copper (OFHC), and tantalum were as standard material targets shocked by an foam projectile traversing 2.0 km/s. response target plates monitored three different velocity interferometers positioned locations on...
Abstract There is considerable interest in developing a better understanding of the dynamic behavior heterogeneous materials. This study investigates and compares response 20 47% dense aluminum foam systems with without polytetrafluoroethylene (PTFE or Teflon) fill. Experiments on were conduced 60 mm bore gun reverse ballistic configuration at velocities ranging from 350 m/s to 2.5 km/s. The particle velocity backside anvil was monitored VISAR system. Mesoscale simulations are good agreement...