Velocity testing

The NACE Landrum Wheel velocity test, originally TM0270-72, is typical of several mechanical-action immersion test methods to evaluate the effects of corrosion. Unfortunately, these laboratory simulation techniques did not consider the fluid mechanics of the environment or metal interface, and service experience very seldom supports the test... 

Mortar Projectile Test (7) Bomb Drop Test (7) Fragmentation Test (7-8) Fragment Velocity Test (8) Blast Effect (8) Shaped Charge Effectiveness (8) Hydrolysis by 240 Hour Test (9) Sensitivity to Initiation by Electrostatic Discharge (9 10)... 

Detonation Velocity Tests. See under DETONATION EXPLOSION AND DEFLAGRATION) VELOCITY, Experimental Determination of Detonation Velocity and also under CHRONOGRAPHS in Vol 3 of Eneycl, pp C304-R to C319-L... 

Velocity of Detonation Tests. See DETONATION VELOCITY TESTS... 

Explosion temperature test 63—65 — Explosive character tests, which. includes Trauzl-, impact-, and defionation velocity tests 67—155 — Examination of raw materials for propellants, explosives and pyrotechnics 159—164 — Examination of nitrated products ... 

Air flow velocity (unidirectional) test The work zone for which air flow velocities are measured is the unidirectional air flow volume designated for clean work, characterized by an entrance plane normal to the air flow. The entrance plane is typically no more than 30 cm (f2 in.) from the supply source. Alternative spacing may be selected, especially for horizontal flow conditions, provided that air flow remains unobstructed in any manner that would significantly affect test results. The unidirectional air flow velocity test should be performed as follows f. Divide the work zone entrance plane into a grid of equal areas. Individual areas should not exceed 0.37 m (4 ft ). 

Support the anemometer sensor probe with a suitable stand. The use of a stand will prevent errors resulting from disruption of the unidirectional air flow that can be caused by the body or arm if the probe is hand-held. Orient the probe perpendicular to the velocity flow vector to be measured. Probe positions for air flow velocity testing are the designated grid test locations, at the work zone entrance plane. All test positions should be within unobstructed, unidirectional air flow. 

The air flow velocity test in a nonunidirectional clean room should be performed as follows ... 

These tests are performed after the HEPA filter leak tests and air velocity tests are completed. 

Open pit test may be conducted in conjunction with panel and fragment velocity tests (Ref 2, pp4-6) (See Fig under Panel Test)... 

D. Fragment Velocity Test. The purpose of this test is to determine the velocity of fragments resulting from the detonation of a bomb or projectile. This is accomplished at Aberdeen PG by the use of Aberdeen Chronograph. This instrument is briefly described in this Encyclopedia, under CHRONOGRAPHS,pC304-R... 

The procedure for combined open pit-, panel- and fragment velocity testing is given in Ref 3, pplO-11... 

Studies on the effect of pulsed nuclear reactor irradiation were conducted on RD-1333 Pb azide (Ref 254). Bulk samples of RD-1333 were exposed to a total dose of 2.0 x 1014 n/cm2 from an unmoderated, unreflected, prompt pulsed reactor in a pulse 40 to 50 psec full-width at half-maximum. Analyses of the Pb azide which included the vacuum stability test, expln temp test, and the detonation velocity test, did not show any changes due to the transient radiation environment... 

Avrami, Jackson and Kirshenbaum (Ref 205) studied the same materials as Berberet (Ref 165) in powder and pellet form. The dose rates were from 6.4 to 9.2 x 105 R/hr while the total exposures ranged from 107 to over 109 R. Besides weight loss, dimensional changes and vacuum stability tests, also checked were melting points, IR, impact sensitivity tests, expln temp tests and detonation velocity tests. MFTNB and DFTNB were the best radiation-resistant materials to levels above 10s R. RDX, HMX and the remainder of the materials degraded appreciably at the 108 R level... 

Doutriche Method for Determination of Velocity of Detonation will be discussed in Vol II, under D, as one of the Detonation Velocity Tests... 

Fragment Velocity Test. The purpose of this test is to determine the velocity of frag-... 

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