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Masatoshi Nishi,Masaki Oshita,Miran Ulbin,Matej Vesenjak,Zoran Ren,Kazuyuki Hokamoto 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.5
The explosive compaction fabrication process of cylindrical uni-directional porous copper, consisting of an outer pipecompletely fi lled with smaller inner pipes, was investigated by experimental and computational simulations to analyzeand optimize the fabrication process conditions. The computational simulations were carried out using a two-dimensionalmodel, mimicking the transverse cross-section of fabricated specimens. The computational simulation results revealed thatthe velocity of the outer pipe, which cannot be experimentally measured, was insuffi cient for explosive welding and that thewalls of the inner pipes had the potential to fail depending on their initial positioning and thickness.