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SUMMARY:Fracture mechanics\, quantum mechanics and fractal geometry applie
 d to brittle materials - Jack Mecholsky\, Department of Materials Science\
 , University of Florida\, Gainsville\, USA
DTSTART:20130418T150000Z
DTEND:20130418T160000Z
UID:TALK43869@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:How do brittle materials fracture?  More importantly\, how can
  we model the fracture process at all length scales?  The answers to these
  questions have not been fully developed\; thus\, the entire description o
 f the fracture process is not yet known.  This presentation will outline o
 ne path to achieve the answers. There are characteristic features encoded 
 on the fracture surfaces during the fracture process for all materials tha
 t fail in a brittle manner.  The fracture surface contains quantitative in
 formation about the stress and energy associated with a specific fracture 
 event.  This presentation will review the important characteristics of the
  fracture process as shown on the fracture surface and discuss one approac
 h to modeling the bond breaking process and subsequent crack propagation p
 ath that results in the fracture surfaces we observe.   Fracture is a frac
 tal process. Thus\, we should be able to describe the entire fracture even
 t from the atomic to the macroscopic length scales using relatively simple
  mathematical relationships. I will outline the approach to achieve an und
 erstanding of fracture on the atomic\, nanometer\, microscopic and macrosc
 opic length scales using quantum mechanics\, fracture mechanics\, quantita
 tive fracture surface analysis and fractal geometry.
LOCATION:Mott Seminar Room\, Cavendish Laboratory
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