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Shock equation of state of a multi-phase epoxy-based composite (-epoxy)
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10.1063/1.3357314
/content/aip/journal/jap/107/10/10.1063/1.3357314
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/10/10.1063/1.3357314

Figures

Image of FIG. 1.
FIG. 1.

Microstructure of -epoxy composite showing (a) spherical aluminum particles and irregular particles and (b) particles are comprised of small elliptical particles.

Image of FIG. 2.
FIG. 2.

Schematic of Indian Head gas gun experiments.

Image of FIG. 3.
FIG. 3.

(a) Expanded view of target assembly for embedded gauge plate impact experiments and (b) schematic of the experimental target arrangement with respect to the magnetic field and projectile/impactor at the LANL Chamber 9 facility.

Image of FIG. 4.
FIG. 4.

(a) Optical micrograph of embedded gauge package. The package consists of thick Al patterned and sandwiched between layers of FEP-Teflon membrane. (b) The gauge membrane glued to the target bottom. (c) The fully assembled target showing the single element stirrup gauge on the target impact face.

Image of FIG. 5.
FIG. 5.

Schematic of explosive loading experiments showing (a) first revision measuring shock velocity in sample and metal donor (JJH15–16) and (b) second revision measuring shock velocity in two samples (JJH54–65).

Image of FIG. 6.
FIG. 6.

(a) Experiment JJH28 PVDF gauge traces and (b) experiment JJH121 PVDF and manganin input gauge traces.

Image of FIG. 7.
FIG. 7.

Corrected response of nine particle trackers and one, of the three, shock velocity trackers for experiment 2S-333. The Hugoniot point was determined from the particle velocity of the impact face gauge and shock velocity from the shock arrival at the nine particle velocity and three shock velocity trackers at their respective Lagrangian positions in the sample.

Image of FIG. 8.
FIG. 8.

(a) Shock velocity-particle velocity, (b) pressure vs particle velocity, and (c) pressure vs volume data from -epoxy composite from the three types of experiments. The linear Rankine–Hugoniot fit to the intermediate-to-high pressure data overestimates the data at low pressures and the bulk sound speed. A more satisfactory fitting form is the quadratic equation .

Image of FIG. 9.
FIG. 9.

VISAR shock wave profile for shot 2S-371 measured at the LiF-sample interface.

Image of FIG. 10.
FIG. 10.

Comparison of experimental data with Baer mixture model and mesoscale model by Fraser et al. (Ref. 27.)

Tables

Generic image for table
Table I.

Density and longitudinal , shear , and bulk sound speeds for the individual constituents, if available, and the -epoxy composite.

Generic image for table
Table II.

Details and experimental results for single stage gas gun loading experiments, where the shaded values indicate properties measured during the experiment and I indicates data from the incident gauge and (T) indicates data from the transmitted gauge. Errors on projectile velocities are .

Generic image for table
Table III.

Details and experimental results for two stage gas gun loading experiments, where the shaded values indicate properties measured during the experiment. Errors on projectile velocity are , while errors on measured shock and particle velocities are within 1%–2%.

Generic image for table
Table IV.

Details and experimental results for explosive loading experiments, where the shaded values indicate properties measured during the experiment.

Generic image for table
Table V.

Input parameters for mixture and mesoscale models.

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/content/aip/journal/jap/107/10/10.1063/1.3357314
2010-05-26
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Shock equation of state of a multi-phase epoxy-based composite (Al–MnO2-epoxy)
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/10/10.1063/1.3357314
10.1063/1.3357314
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