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Untitled - Sciencemadness Dot Org

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DETONATION PROPERTIES<br />

Explosive<br />

Table 3.40 PBX-9405 (RDX/NC/CEF) ON DURAL<br />

RDX/NC/CEF: 93.7/3.15/3.15. 1.757 f 0.001 g/cm3. A 203-mm-thick conical<br />

frustum of 229-mm small diameter and 326-mm large diameter with its small end<br />

toward the plate. P-080 booster, D = 8.489 - O.l57/diam (cm) at p. = 1.755 g/cm3.<br />

Plates<br />

Dural.<br />

Analysis<br />

Shot<br />

No.<br />

Plate Plate<br />

Density Thickness<br />

k/cma) (mm)<br />

Free-Surface<br />

Velocity<br />

(km/s)a<br />

8A 1325 2.774 2.54 3.643 f 0.076<br />

7C 152 2.782 6.35 3.690 L!C 0.066<br />

8A 1230 2.782 12.76 3.594 & 0.013<br />

8A 1231 2.774 19.03 3.517 f 0.004<br />

8A 1236 2.805 25.41 3.385 f 0.032<br />

7c 148 2.805 25.53 3.378 f 0.015<br />

8A 1237 2.805 38.16 3.283 f 0.019<br />

8A 1238<br />

---------<br />

2.799 50.88 3.129 f 0.013<br />

“Mean and standard deviation of seven determinations on the first<br />

two shots listed and five determinations on the other six.<br />

Linear least squares fitting gives Urs = 3.718 km/s - 0.01173 t (mm). At t = 0,<br />

plate U, = 7.826 km/s and P, = 40.04 GPa. Acoustic approximation with D = 8.494<br />

km/s, pox = 1.757 g/cm3 and porn = 2.791 g/cm3 gives corresponding explosive<br />

parameters of P, = 33.70 GPa, U,, = 2.258 km/s, and y = 2.762.<br />

274

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