The Effects of Cased Ammunition Explosions Confined in Concrete Cubicles - Kasun-III
SWEDISH DEFENCE RESEARCH AGENCY STOCKHOLM
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The debris throw from explosively overloaded concrete structures has been a long time research effort of the KLOTZ Group, an international group of explosives safety experts. Two previous experimental programs, Kasun-I and Kasun-II, were performed with uncased explosive charges, and the results have been presented at earlier DDESB Explosives Safety Seminars. The Kasun-III research program was initiated and funded by the KLOTZ Group, together with Norwegian and Swedish authorities, to study the influence of weapons casing on the failure mode of the structure and the debris mass distribution and dispersal in a combined theoretical, numerical and experimental approach. This paper deals with the experimental part of the research program. Three tests with artillery shells and two tests with bare plastic explosives were done in 2008 in a joint Norwegian-Swedish effort. The tests resulted in a debris database of more than 21.500 entries, as well as detailed external blast pressure recordings. Debris densities and the relative contribution of concrete, reinforcement steel and weapon fragments to the debris inhabited building distance IBD can be determined from the debris database. Differences in structural breakup caused by the weapons fragments were documented with high speed cameras. Even though only a limited number of tests have been performed, the obtained data is a valuable contribution to the current knowledge of detonation of cased charges inside concrete structures. The data also supports the continued development of the KLOTZ Group Engineering Tool for debris throw prediction.
- Ammunition and Explosives