ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013005737
pages 307-317

PLATE DENT TESTS AND SEDIMENTATION OF PARTICLES IN MELT-CAST EXPLOSIVES

Patrick Brousseau
Defence Research and Development Canada − Valcartier, 2459 Pie-XI Blvd North, Quebec, Canada G35 ix5
Serge Trudel
Defence Research and Development Canada − Valcartier, 2459 Pie-XI Blvd North, Quebec, Canada G35 ix5
Pascal Beland
Defence Research and Development Canada − Valcartier, 2459 Pie-XI Blvd North, Quebec, Canada G35 ix5

要約

A short experimental study demonstrated that the plate dent test is very sensitive to the last few centimeters of explosives at the bottom of the cylinders. The tests were performed by simply detonating an explosive cylinder with a small thickness (12.7−25.4 mm) of a different explosive (faster, slower, inert) at the bottom. The study will present how those small thicknesses influence the dent depth and hence the reported performance. Cylinders of explosives were cast and then cut to determine the extent of sedimentation of the HMX particles. Densities were taken at various places and concentrations of HMX were extrapolated from those. It was found that there was a difference of 22% in the percentage of HMX from the bottom and the top of the cylinder (66% vs. 44%; theoretical average was 52.8%). The explosive at the bottom was then significantly different and more powerful than the one at the top. The study will also demonstrate how the situation can be worse in real artillery shells. Given the results of the plate dent experiments reported before, it will be demonstrated how in theory one could be misled on the plate dent test by letting particles settle. Simple precautions can be taken to eliminate this variable and to ensure that the results of the plate dent test are meaningful. It also serves as a reminder that the composite explosives that we test, especially the melt-cast explosives, have large variations in their composition from sample to sample.


Articles with similar content:

EFFECT OF METAL THERMAL PROPERTIES ON BOILING CURVES OBTAINED BY THE QUENCHING METHOD
International Heat Transfer Conference 7, Vol.8, 1982, issue
David Y. T. Lin , J. W. Westwater
THE EXPERIMENTAL RESEARCH OF DESULPHURIZATION OF SPURTING LIMESTONE POWDER
Energy and Environment, 1995, Vol.0, 1995, issue
ZaiSan Zhao, WeiWu Cao, YongMing Tao , Ying Shi
AN EXACT SOLUTION FOR THERMAL ANALYSIS OF A CYLINDRICAL OBJECT USING A HYPERBOLIC HEAT CONDUCTION MODEL
Heat Transfer Research, Vol.43, 2012, issue 5
Mohammad Sadegh Motaghedi Barforoush, Seyfolah Saedodin
Energy density above a resonant metamaterial in the GHz: an alternative to near-field thermal emission detection.
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2013, issue
Jeremie Drevillon, Karl Joulain, Younes Ezzahri
ENVIRONMENTAL IMPACT ASSESSMENT OF SOLID ROCKET MOTORS GROUND TESTS
International Journal of Energetic Materials and Chemical Propulsion, Vol.4, 1997, issue 1-6
T. Aguesse