Fragmentation of structural energetic materials: implications for performance

18th APS-SCCM; 24th AIRAPT

Aydelotte, B.^1 ; Braithwaite, C.H.^2 ; Thadhani, N.N.^3

Army Research Laboratory, RDRL-WML-H, 328 Hopkins Road, Aberdeen Proving Ground

MD

21005, United States^1

Fracture and Shock Physics, SMF Group, Department of Physics, J J Thomson Avenue, Cambridge

CB3 0HE, United Kingdom^2

Georgia Institute of Technology, School of Materials Science and Engineering, J. Erskine Love Building, 771 Ferst Drive, Atlanta

GA

30332-0245, United States^3

关键词: Cold-sprayed;    Combustion pro-cess;    Compacted mixtures;    Ductile metals;    Fragmentation process;    Ring-shaped sample;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/13/132001/pdf
DOI  :  10.1088/1742-6596/500/13/132001

来源: IOP

【 摘 要 】

Fragmentation results for structural energetic materials based on intermetallic forming mixtures are reviewed and the implications of the fragment populations are discussed. Cold sprayed Ni+Al and explosively compacted mixtures of Ni+Al+W and Ni+Al+W+Zr powders were fabricated into ring shaped samples and explosively fragmented. Ring velocity was monitored and fragments were soft captured in order to study the fragmentation process. It was determined that the fragments produced by these structural energetic materials are much smaller than those typically produced by ductile metals such as steel or aluminum. This has implications for combustion processes that may occur subsequent to the fragmentation process.