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SUMMARY:Toward understanding the role of heterogeneity in powder mixtures 
 - Dan Eakins\, Institute of Shock Physics\, Imperial College\, London
DTSTART:20100121T160000Z
DTEND:20100121T170000Z
UID:TALK21592@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:Inhomogeneities in structure and chemistry can play a signific
 ant role in the overall response of materials under shock compression. Und
 erstanding this link between configuration and response is the key to deve
 loping novel\, microengineered materials with tailored mechanical/chemical
  behavior. In this talk\, I will describe the effect of intrinsic (melt te
 mperature\, density\, yield strength) and extrinsic properties (particle s
 ize\, shape\, orientation) on the behavior of powder mixtures\, with atten
 tion to the initial densification response and subsequent reaction initiat
 ion. Following the collective work on silicide- and aluminide-forming mixt
 ures\, I will also present a conceptual framework for shock-induced reacti
 ons\, which may be used to guide development of energetic systems with tai
 lored chemical response.
LOCATION:TCM Seminar Room\, Cavendish Laboratory\, Department of Physics
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