Flying plate test

Another impact test is called the flying plate test. In this test a metal plate is explosively driven against an explosive sample. The velocity of the plate is a measure of the explosive s sensitivity to high-velocity impact. 

Flying Plate Test for Determination of the Detonation Parameters... 

The aquarium test is essentially a modification of the flying plate test in which the metal plate is replaced by a layer of water or some other optically transparent material, such as Plexiglas. Instead of the determination of the plate free-surface velocity, the traveling of the shock wave through an inert and optically transparent material is viewed as a function of time. When having the shock wave velocity vs. distance dependence, and knowing the adiabatic shock equation of the inert material used, the mass velocity behind the shock wave front and the detonation pressure of a tested explosive may be calculated. 

If the CJ point is not reached, i.e., there is no marked change in the slope of the curve, then the calculation of the detonation parameters is based on the extrapolation of the shock wave velocity to the zero distance (initial shock wave velocity) and consequent calculation of the corresponding mass velocity and pressure, applying the adiabatic shock equation and Goranson equation (the calculation procedure is similar to the one used in the flying plate test). 

Flying Plate Test. The flying plate test is used to measure the vulnerability of an explosive to high velocity impact. A steel plate is propelled by the detonation of an explosive at the sample under test. The velocity of the plate is adjusted by varying the size of the explosive charge. 

Four tests were employed against houseflies the standard Peet-Grady method (1) the turntable method (2) the loop method, in which the material is applied to individual female houseflies, by means of a calibrated wire loop (9) and a residual deposit test, in which flies are exposed to glass plates 25 hours after they have been sprayed with acetone solutions of the products. 

The butten of iron obtained in the assay Is subjected to the following test —It is placed between a fold of thin, tin-plate, to prevent it flying away on being struck, it is then hammered upon an anvil and broken if the button flattens before breaking, and the fracture have a greyish appearance, the quality is considered good 270,... 

The tests were performed with the plates spaced at 300, 400 and 500 mm at gas flow rate of 8000 Nm /h and gas temperatirre of 165°C, the 35 MWe unit was burning Soirth African/TCOA coal imder these conditions the fly ash resistivity was approximately 2.5-10 ohm.cm. 

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