PERCOLATED CRACKS IN A SOLID CONTAINING MANY INITIAL DEFECTS

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Abstract

<jats:p> Hydrogen-induced fracture of steel is characterized by the formation of internal voids caused by hydrogen precipitation at an inclusion-matrix interface, followed by the formation of microcrack array under the superposed action of internal hydrogen pressure and external forces. The propagation of the hydrogen-induced fracture is considerably random and the fracture develops by stepwise linking of the microcracks. </jats:p><jats:p> Crack growth in a solid containing many initial defects is studied by Monte Carlo simulation on a square lattice. Each initial defect is assumed to have two crack tips like the Griffith crack and percolated crack patterns in homogeneous medium are investigated. The effect of the density of the initial defects and the lattice size on percolation characteristics is also studied. </jats:p>

Journal

  • Fractals

    Fractals 04 (03), 377-384, 1996-09

    World Scientific Pub Co Pte Lt

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