Shock compression response of Ti+B reactive powder mixtures

Gonzales, Manny; Gurumurthy, Ashok; Kennedy, Greg; Gokhale, A.M.; Thadhani, Naresh N.

doi:10.1088/1742-6596/500/5/052013

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Sometime, a reverse Taylor test is performed, in which the RM cylinder is stationary and the projectile serves as the anvil . Modifications of this test are also being developed using instrumented plates, high‐speed video, and post‐mortem analysis of the compacted and initiated samples …”

Section: Characterization Of Rsmsmentioning

confidence: 99%

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Reactive Structural Materials: Preparation and Characterization

Hastings

Dreizin

2017

Adv Eng Mater

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Reactive structural materials, which can serve both as structural elements as well as a source of chemical energy released upon initiation have emerged as an important class of metal-based composites for use in various energetic systems. Such materials rely on a variety of exothermic reactions, from oxidation to formation of metal-metalloid and intermetallic phases. The rates of these reactions are as important as the energy that may be released, in order for them to occur at the time scales compatible with the requirements of applications. Therefore, chemical composition, scale at which reactive components are mixed, and the structure and morphology of materials are important and can be controlled by the method of preparation and compaction of the composite materials. Methods of preparation of the composite structures are briefly reviewed as well as methods of characterization of their mechanical and energetic properties. In addition to common thermo-analytical and static mechanical property measurements, dynamic tests of mechanical properties as well as ignition and combustion experiments are necessary to understand the fragmentation, initiation, and heat release expected for these materials when they are stimulated by an impact, shock, or rapid heating. Reaction mechanisms are studied presently for the thin layers and small samples of reactive materials initiated in carefully designed experiments. In other experiments, impact and explosive initiation are characterized for larger material compacts in the conditions imitating practical scenarios. Examples of results describing thermal, impact, and explosive initiation of some of the reactive materials are presented.

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Section: Characterization Of Rsmsmentioning

confidence: 99%

“…In another experimental technique, based on the Taylor test discussed above, a gas gun is used to accelerate a sample of RSM, which impacts onto a stationary anvil . An RSM sample is attached to a metal carrier rod using custom‐manufactured copper capsule fixtures.…”

Section: Characterization Of Rsmsmentioning

confidence: 99%

Reactive Structural Materials: Preparation and Characterization

Hastings

Dreizin

2017

Adv Eng Mater

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Challenges in Understanding the Dynamic Behavior of Heterogeneous Materials

Gonzales

Thadhani

2020

Integrated Computational Materials Engineering (ICME)

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Isotropic Growth on Cartesian Voxel Grids with von Neumann Neighborhoods for Rapid Generation of Synthetic Microstructures

Payton,

Coutinho,

Gerlt

et al. 2024

Metallogr. Microstruct. Anal.

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Randomized instantiations of synthetic microstructures are needed to assess the statistical significance of microstructure variability. Algorithms that use Voronoi tessellations of random points produce synthetic polycrystalline microstructures with a less realistic appearance than random packing of spheroidal particles followed by growth-until-impingement. Additionally, Voronoi tessellations offer limited control of morphological parameters and are challenging to implement when the desired volume fraction is less than unity. However, unless additional physics-based constraints are applied, growth on a Cartesian voxel grid utilizing a von Neumann neighborhood element results in anisotropic growth that is generally not observable along the primary axes. The present work describes both analytical and empirically optimized corrections for directional growth rates and a framework for their inclusion in a synthetic microstructure generation algorithm. The presented algorithm can produce synthetic microstructures similar to those produced by random seed Monte Carlo techniques in a fraction of the computational time.

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Shock compression response of Ti+B reactive powder mixtures

Cited by 4 publications

References 12 publications

Reactive Structural Materials: Preparation and Characterization

Reactive Structural Materials: Preparation and Characterization

Challenges in Understanding the Dynamic Behavior of Heterogeneous Materials

Isotropic Growth on Cartesian Voxel Grids with von Neumann Neighborhoods for Rapid Generation of Synthetic Microstructures

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