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DETONATION PROPERTIES<br />

Explosive<br />

Table 3.42 RDX AND DNPA ON DURAL<br />

RDX/DNPA: 90/10. 1.745 zt 0.001 g/cm3. Two 76-mm-thick, 150-mm-diam pieces<br />

to make 152mm thickness. P-080 booster. D = 3.233 p0 + 2.785.<br />

Plates<br />

Dural.<br />

Analysis<br />

Shot<br />

No.<br />

Plate<br />

Density<br />

k/cm3)<br />

B 2.790<br />

a 2.790<br />

a 2.790<br />

* 2.790<br />

a 2.790<br />

8 2.790<br />

8A 365 2.793<br />

8A352 2.790<br />

7c 150 2.805<br />

7c147 2.799<br />

Plate<br />

Thickness<br />

(-4<br />

Free-Surface<br />

Velocity<br />

(km/s)”<br />

2.49 3.578 f 0.016<br />

5.04 3.491& 0.024<br />

6.36 3.466<br />

7.58 3.426 f 0.009<br />

10.12 3.421 I!I 0.009<br />

12.62 3.412 + 0.021<br />

12.71 3.376<br />

25.35 3.274 f 0.015<br />

37.97 3.087 f 0.056<br />

50.87 2.966 f 0.083<br />

“Data for this entry were determined on some or all of the following<br />

shots: 8A-315, -334, -335, and -345; each was fired using several<br />

plate thicknesses.<br />

bMean and standard deviation of five determinations on the last<br />

three entries, four on the second through sixth, three on the first,<br />

and one on the third and seventh.<br />

Linear least squares fitting gives U, = 3.552 km/s - 0.01171 t (mm). At t = 0,<br />

plate U, = 7.719 km/s and P, = 37.86 GPa. Acoustic approximation with D = 8.427<br />

km/s, pox = 1.745 g/cm3, and porn = 2.793 g/cm3 gives corresponding explosive<br />

parameters of P, = 31.66 GPa, U,, = 2.153 km/s, and y = 2.915.<br />

276

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