Showing papers in "International Journal of Rock Mechanics and Mining Sciences in 1987"

TL;DR: In this article, the fracture process zone and its effect on fracture toughness were examined for Charcoal and Rockville granite, average grain sizes of 1 and 10mm, and the experimental evidence indicated an effective crack to be composed of a traction free length and a ligament process zone, which was observed to form a multiconnected region within the macrocrack.