Energy strength theory

A. Wang and P.W. Carr, Comparative study of the linear solvation energy relationship, linear solvent strength theory, and typical conditions model for retention prediction in reversed-phase liquid chromatography. J. Chromatogr.A 965 (2002) 3-23. 

Balandin s strength theory [384] is based on assumptions about the functional dependence of the specific potential energy of deformation on the spherical stress tensor. In first approximation, this function is assumed linear and for [Pg.316]

The existence of flaws in the form of microcracks explains why the actual strength is lower than the theoretical strength. Crack formation requires energy to produce two new surfaces. Thus, Griffith s [22] approach to brittle failure is often called an energy balance theory . Observe the schematic illustration in Fig. 8.7 characterizing a crack. Here, the crack is shown at the center, though it may be at the sides of the specimen (half-cracks). 

Fig. XrV-6. (a) The total interaction energy determined from DLVO theory for n-hexadecane drops for a constant ionic strength - 5.0 nm) at various emulsion pH (b) enlargement of the secondary minimum region of (a). (From Ref. 39.)...

The stress, L, determined using the Modified Mohr method effeetively aeeounts for all the applied stresses and allows a direet eomparison to a materials strength property to be made (Norton, 1996), as was established for the Distortion Energy Theory for duetile materials. The set of expressions to determine the effeetive or maximum stress are shown below and involve all three prineipal stresses (Dowling, 1993) ... 

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