A new type of expanding ring experiment is employed to investigate the dynamic fragmentation of multiple metal rings. The experimental platform and layout of the multiple metal rings initiation system, and fundamental principle, are detailed, and are used to conduct the dynamic loading of pure aluminium and oxygen-free high conductivity (OFHC) copper materials. A review of the reassembled fragments indicates that this experimental platform can achieve simultaneous and stable loading of multiple metal rings. Finally, calculated strain at fracture is carried out and statistical distribution is carefully analyzed.
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