Fracture toughness determination and micromechanics of rock under mode I and 
mode II loading

Backers, Tobias

doi:10.2312/GFZ.b103-05055

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Fracture toughness determination and micromechanics of rock under mode I and mode II loading

Authors

Backers, Tobias
Scientific Technical Report STR, Deutsches GeoForschungsZentrum;
3.2 Geomechanics and Rheology, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Backers, T. (2005): Fracture toughness determination and micromechanics of rock under mode I and mode II loading, PhD Thesis, (Scientific Technical Report STR ; 05/05), Potsdam : Deutsches GeoForschungsZentrum GFZ, 95 p.
https://doi.org/10.2312/GFZ.b103-05055

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_8668

Abstract

This thesis work describes a new experimental method for the determination of Mode II (shear) fracture toughness, KIIC, of rock and compares the outcome to results from Mode I (tensile) fracture toughness, KIC, testing using the International Society of Rock Mechanics (ISRM) Chevron-Bend (CB-) method. The fracture toughness describes the resistance of rock to fracturing. This parameter is therefore important when estimating the failure of rock and rock structures using rock fracture mechanics principles.