By Hans J. Herrmann, H. J. Herrmann, S. Roux
Because the starting of the century the technological wish to grasp the fracture of metals, concrete or polymers has boosted learn and has left in the back of an overpowering quantity of literature. In a box the place it sort of feels tricky to claim something uncomplicated and new, the editors and authors of this booklet have controlled to just do that. The method of fracture taken the following used to be now not conceived through mechanical engineers or fabric scientists. it's basically the spinoff of intriguing advancements that experience happened within the final ten to 15 years inside of a department of theoretical physics, referred to as statistical physics. innovations comparable to ``percolation'' and ``fractals'', as versions for the homes of fracture aren't frequently thought of via engineers. a specific target of this quantity is to stress the basic position sickness performs within the breaking approach. the most scope of the quantity is pedagogical and is whilst an summary of fracture mechanics for physicists and an creation to new ideas of statistical physics for mechanics and engineers
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Extra resources for Statistical Models for the Fracture of Disordered Media
Example text
These microscopic flaws propagate due to mechanical deformations but also due to thermal expansion, both common in the earth's crust. While propagating in mode I the surface of the cracks shows characteristic tilt and twist configurations due to the existence of shear fields. On larger scales mode I fracture in rocks also shows the mirror-mist-hackle scenario described above for glass. If a crack has grown long enough it can also propagate in mode II or mode III. In this case the surface morphology is less unique: In some rocks like sandstones one sees deformation bands, in other cases the crack is accompanied by plumes of microcracks called "feather fractures".
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