WebExtension of an earlier theory of Hertzian fracture in brittle isotropic materials is here made to include the case of brittle single crystals, with particular reference to crystals having the diamond structure. A detailed description is first given of the inhomogeneous stress field in a flat, elastic specimen loaded normally with a hard sphere. WebHertizan fracture theory, previously developed for ideal brittle solids fractured under essentially environment-free conditions, is here modified to allow for an interaction between the growing cone crack and a reactive environment. Two alternative models, both of which account for the observed detrimental effect of an environment on the Hertzian …

On the Theory of Hertzian Fracture

WebThe first theory of Hertzian fracture was by Frank and Lawn (1967), who treated the problem of crack growth from the circumference of the contact circle at which the … WebA Hertzian cone is the cone produced when an object passes through a solid, such as a bullet through glass. More technically, it is a cone of force that propagates through a brittle, amorphous, or cryptocrystalline solid … body prophylaxx beurteilung

Interpretation on the basis of Hertzian theory of a spiral …

WebHertzian fracture produced by steel ball indenters on vitreous carbon is qualitatively similar to Hertzian fracture of soda-lime glass. The bulk material obeys Auerbach's law, i.e. the … Web14 de jan. de 2010 · Indentation fracture, so-called, is of historical as well as practical interest. It dates back to 1880 with the celebrated studies of Hertz (see Hertz 1896) on conical fractures at elastic contacts between curved glass surfaces. The fully developed Hertzian cone crack is the prototypical stable fracture in brittle solids. WebThe Hertzian fracture theory is based on stresses which develop due to pressure exerted by an elastic spherical indenter on a brittle solid. In magmatic diapiric processes the … body pro physical therapy waimea