Item: Fracture toughness for dry slab avalanches
Title: Fracture toughness for dry slab avalanches
Proceedings: 2002 International Snow Science Workshop, Penticton, British Columbia
Authors: David M. McClung, Department of Geography, The University of British Columbia, Vancouver B.c., Canada
Abstract: Dry slab avalanches release by propagating shear fractures. Since alpine snow is a quasi-brittle strain softening material, it is implied that fracture toughness not shear strength is the fundamental quantity related to instability. In this paper, the first estimates of fracture toughness for dry snow slabs are given based on field data in relation to the fundamental fracture mechanics size effect law and mechanical properties of snow slabs.
Keywords: fracture, dry slab avalanche
Digital Abstract Not Available