Evolution of Shock Waves in Silicon Carbide Rods

Balagansky, Igor; Balagansky, A.I.; Разоренов, С. В.; Уткин, А. В.

doi:10.1063/1.2263451

Cited by 8 publications

(2 citation statements)

References 4 publications

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“…The pressure induced transformation in SiC was independently confirmed at $104 GPa, with a volume change of 9%, in experiments of plane impact used to evaluate the strength of SiC in Hugoniot states. 16 The evolution of shock waves was investigated in different SiC samples using independent techniques, 17,18 which indicate high longitudinal sound waves of $11.5 km/s, high HEL in excess of $9 GPa, and high dynamic tensile strength (spall strength) of more than 0.5 GPa. A combination of experiments and atomistic modeling of impact on SiC was employed to describe the general trends of the generation and propagation of shock waves and the shock induced fracture dynamics.…”

Section: Introductionmentioning

confidence: 99%

Shock-induced microstructural response of mono- and nanocrystalline SiC ceramics

Branı́cio

Zhang

Rino

et al. 2018

Journal of Applied Physics

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The dynamic behavior of mono-and nanocrystalline SiC ceramics under plane shock loading is revealed using molecular-dynamics simulations. The generation of shock-induced elastic compression, plastic deformation, and structural phase transformation is characterized at different crystallographic directions as well as on a 5-nm grain size nanostructure at 10 K and 300 K. Shock profiles are calculated in a wide range of particle velocities 0.1-6.0 km/s. The predicted Hugoniot agree well with experimental data. Results indicate the generation of elastic waves for particle velocities below 0.8-1.9 km/s, depending on the crystallographic direction. In the intermediate range of particle velocities between 2 and 5 km/s, the shock wave splits into an elastic precursor and a zinc blende-to-rock salt structural transformation wave, which is triggered by shock pressure over the $90 GPa threshold value. A plastic wave, with a strong deformation twinning component, is generated ahead of the transformation wave for shocks in the velocity range between 1.5 and 3 km/s. For particle velocities greater than 5-6 km/s, a single overdriven transformation wave is generated. Surprisingly, shocks on the nanocrystalline sample reveal the absence of wave splitting, and elastic, plastic, and transformation wave components are seamlessly connected as the shock strength is continuously increased. The calculated strengths 15.2, 31.4, and 30.9 GPa for h001i, h111i, and h110i directions and 12.3 GPa for the nanocrystalline sample at the Hugoniot elastic limit are in excellent agreement with experimental data.

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Section: Introductionmentioning

confidence: 99%

Shock-induced microstructural response of mono- and nanocrystalline SiC ceramics

Branı́cio

Zhang

Rino

et al. 2018

Journal of Applied Physics

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“…Evolution of shock waves in self-bonded silicon carbide bars in the shape of 20 mm x 20 mm square prisms of varying lengths is investigated in the paper [10]. Shock waves were generated by detonating a cylindrical shaped (d=40 mm and l=40 mm) stabilized RDX high explosive charge of density 1.60 g/cm 3 .…”

Section: Introductionmentioning

confidence: 99%

Influence of Inert Copper and Silicon Carbide Inserts on Process of Detonation Transmission through Water

Balagansky

Matrosov

Stadnichenko

et al. 2007

MSF

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We have investigated the influence of fluoroplastic, copper, and silicon carbide inert inserts on the process of detonation transmission through water. Active and passive HE charges were molded from Comp B. On the rear end of the passive HE charge an identification steel specimen was mounted, which detected presence or absence of detonation. Inert inserts were shaped as square prisms of varying lengths, and were contained between active and passive HE charges without any clearance on the way of initiating shock wave with partial overlap of HE cross sections. It is shown that preloading of a passive HE charge with a shock wave transmitted through copper or ceramic inserts causes considerable desensitization of the Comp B. Ceteris paribus, the crash distance of detonation transmission for copper was equal to 74%, and for silicon carbide – to 60% of the distance for fluoroplastic. While performing the experiments with ceramic inserts we have observed cumulation phenomenon, which manifested itself as a hole in identification steel specimen with depth of about 10 mm. The surface of specimen had typical temper colours that demonstrated presence of high temperatures.

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Phenomena in High Explosive Charges Containing Rod‐Shaped Inert Elements

2019

Explosion Systems With Inert High‐Modulus Components

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Evolution of Shock Waves in Silicon Carbide Rods

Cited by 8 publications

References 4 publications

Shock-induced microstructural response of mono- and nanocrystalline SiC ceramics

Shock-induced microstructural response of mono- and nanocrystalline SiC ceramics

Influence of Inert Copper and Silicon Carbide Inserts on Process of Detonation Transmission through Water

Phenomena in High Explosive Charges Containing Rod‐Shaped Inert Elements

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