Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-04-06
International Journal of Fracture 142 (11/2006) 51-67
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
10.1007/s10704-006-9022-9
An extensive experimental study of indentation and crack arrest statistics is presented for four different brittle materials (alumina, silicon carbide, silicon nitride, glass). Evidence is given that the crack length statistics can be described by a universal (i.e. material independent) distribution. The latter directly derives from results obtained when modeling crack propagation as a depinning phenomenon. Crack arrest (or effective toughness) statistics appears to be fully characterized by two parameters, namely, an asymptotic crack length (or macroscopic toughness) value and a power law size dependent width. The experimental knowledge of the crack arrest statistics at one given scale thus gives access to its knowledge at all scales.
Charles Yann
Hild François
Roux Stephane
Vandembroucq Damien
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