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Dynamic Crushing of Unidirectionally Reinforced Metal Matrix Composite
Author(s) -
Zhang H.,
Cho K.,
Yen C. F.,
RaviChandar K.
Publication year - 2014
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/str.12103
Subject(s) - materials science , split hopkinson pressure bar , dissipation , composite number , composite material , strain rate , bar (unit) , fracture (geology) , matrix (chemical analysis) , dynamic loading , metal matrix composite , strain (injury) , structural engineering , engineering , physics , medicine , meteorology , thermodynamics
ABSTRACT The strain rate‐dependent response of Al 2 O 3 /Al composite is examined using a split‐Hopkinson pressure bar apparatus. High‐speed photography is used to establish that the strain develops inhomogeneously in the specimen due to the onset and propagation of a kink band. The power balance equation is exploited in order to determine the dissipation at the kink band. The mechanism of kink band is shown to be essentially unaltered, with only the amount of fibre fracture being influenced by the dynamic loading process.