Wikipedia:WikiProject Physics/Taskforces/Glass/Topics
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- under construction -
Physics:
Glass physics deals with topics such as the nature of the glass transition, optical properties of glass, fracture mechanics, and the modeling of glass behavior based on fundamental thermodynamic principles (deductive glass modeling). Important articles, for example, Physics of glass or Refractive index are summarized in the category Glass physics.
- Fracture mechanics
- Unfortunatey, the theory of fracture mechanics in brittle materials is quite laborious - tho interesting. The good news is that we already have an excellent start on the subject in our article on fracture mechanics. In my opinion, the key texts in this field have been authored by R.W. Davidge, Brian Lawn and David Green as part of the Cambridge Solid State Science Series, with UCSB's A.G 'Tony' Evans from [http://www.princeton.edu/~cml%7C Princeton on the cutting edge in the field of composite materials.
- Based on the texts alone, we could easily double (or even triple) the size of the current article to include additional key factors, such as the movement of dislocations (and other microstructural features), the local chemistry in the vicinity of a crack tip, and their net impact on creep, fatigue, plastic deformation and crack tip propagation in glasses and glass/ ceramics.
- Transformation toughening is based on the assumption that zirconia undergoes several structural phase transformations between room temperature and practical sintering (or firing) temperatures (1000 - 1500 degrees C). Thus, due to the volume restrictions induced by the glassy/ceramic matrix, metastable crystalline structures can become frozen in which impart an internal strain field surrounding each zirconia inclusion upon cooling below the equilibrium transformation range. This enables a zirconia particle (or inclusion) to absorb the energy or stress intensity factor of an approaching crack tip front in its nearby vicinity.
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