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SUMMARY:Crack tips' black box: Spectroscopic challenge to the strength of 
 solids - Prof. Giuseppe Pezzotti\, Kyoto Institute of Technology\, Japan
DTSTART:20080118T143000Z
DTEND:20080118T153000Z
UID:TALK9917@talks.cam.ac.uk
CONTACT:Nami Norman
DESCRIPTION:Fracture mechanics has been traditionally intended in the  fra
 mework of technological implications\, often leaving aside the intrinsic s
 tructural properties of the materials and their theoretical implications. 
 This approach may be considered to mainly arise from the unavailability of
  techniques that are capable to understand the fracture mechanisms occurri
 ng at the very crack tip. As a result\, the value of the intrinsic strengt
 h of brittle materials has been traditionally embodied into a phenomenolog
 ically interpreted crack-tip singularity (according to the Griffith's mode
 l)\, and the intrinsic strength behavior of solids remains unfolded. The u
 ltimate strength of the first bond ahead of a crack can be now monitored b
 y advanced spectroscopic techniques such as Raman and Cathodoluminescence 
 spectroscopy\, which coupled with combined quantum-mechanics atomistic sim
 ulation models\, may give access to the intrinsic material strength\, thus
  offering an unique possibility to open the Pandora's box at the crack tip
 : a significative advancement in modern fracture mechanics.
LOCATION:Department of Engineering - LR6
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