104 アルミニウム合金円筒の壁面二重化による内筒爆発時の破片飛散防止効果に関する実験的検討(OS 爆発と破壊)

概要

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Explosive loading technique is applied to expand tubular cylinders of A5052 aluminum alloy to fragmentation varying explosive driver diameters, where, a column of high explosive PETN, inserted coaxially into the bore of a cylinder specimen and initiated by exploding copper wires at the colunm axis using an electric discharge current. After these basic tests, outer cylinders of the same material are provided outside the basic cylinders, and similar explosion tests are performed examining shatterproof effect of wall doubling for striking of fragments expelled from inner cylinders. Expanding cylinders are observed, and most of the damaged cylinders and fragments have been recovered successfully. Recovered fragment sizes have been investigated using a fragmentation model in the basic tests. In the doubly walled tests, the outer cylinder has almost caught the fragments of inner cylinder in case of lowermost amount of the explosive. Theoretical consideration and additional tests are in progress.
一般社団法人日本機械学会の論文
2010-03-15