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The failed strength of ceramics subjected to high-velocity impact
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10.1063/1.2955456
/content/aip/journal/jap/104/1/10.1063/1.2955456
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/1/10.1063/1.2955456
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Figures

Image of FIG. 1.
FIG. 1.

The JHB model and test data for silicon carbide: (a) Strength vs pressure for the intact and failed strength, (b) pressure vs volumetric strain, and (c) failure strain vs normalized pressure.

Image of FIG. 2.
FIG. 2.

Comparison of the computed and experimental results for a tungsten rod impacting a confined silicon carbide target with prestress at . (a) Initial 2D geometry, (b) transition from dwell to ceramic penetration at 18 μs, (c) ceramic penetration at , and (d) comparison of computed and experimental results.

Image of FIG. 3.
FIG. 3.

The computed and experimental results for eight different impact conditions involving silicon carbide. (a) Shock-and-release plate-impact response, (b) interface defeat, dwell and penetration for both a tungsten and molybdenum rod, (c) penetration into a thick unconfined target, (d) perforation of a thin target, (e) Hertzian indentation producing a force-displacement response, f) interface defeat using a copper buffer, (g) shock-reshock plate-impact response, and (h) laser-induced spall

Image of FIG. 4.
FIG. 4.

The computed result of a tungsten rod impacting a confined silicon carbide target at . Shown on the left is material and on the right is damage. (a) Penetration into the ceramic at , (b) generation of a region of failed material in front of the penetrator at , (c) completion of primary penetration at , and (d) completion of total penetration at .

Image of FIG. 5.
FIG. 5.

The computed and experimental results for a tungsten rod impacting a confined silicon carbide target at various impact velocities. The top portion presents primary and total penetration normalized by the initial rod length. The bottom portion presents after-flow penetration normalized by the rod diameter.

Image of FIG. 6.
FIG. 6.

The computed and experimental results for a tungsten rod impacting a confined boron carbide target at various impact velocities. The top portion presents primary and total penetration normalized by the initial rod length. The bottom portion presents after-flow penetration normalized by the rod diameter.

Image of FIG. 7.
FIG. 7.

The computed and experimental results for a tungsten rod impacting a confined aluminum nitride target at various impact velocities. The top portion presents primary and total penetration normalized by the initial rod length. The bottom portion presents after-flow penetration normalized by the rod diameter.

Image of FIG. 8.
FIG. 8.

Experimental data and models for the failed strength of silicon carbide.

Image of FIG. 9.
FIG. 9.

(a) Comparison of the computed and experimental results for a gold rod impacting confined silicon carbide powder at five different impact velocities. Comparison of the (b) computed result and (c) experimental result, , after initial rod impact at .

Image of FIG. 10.
FIG. 10.

Determination of the penetration velocity for a gold rod penetrating compacted silicon carbide powder at an impact velocity of . (a) Four x-ray pictures showing penetration into the powder at , 11.3, 14.6, and after impact and (b) penetration vs time for test 5 resulting in a penetration velocity of .

Image of FIG. 11.
FIG. 11.

Computational model for compacted silicon carbide powder. (a) Pressure-volume response including compaction and (b) strength as a function of pressure.

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/content/aip/journal/jap/104/1/10.1063/1.2955456
2008-07-15
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The failed strength of ceramics subjected to high-velocity impact
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/1/10.1063/1.2955456
10.1063/1.2955456
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