An empirical relation between mode I fracture toughness and the tensile strength of rock

By Z. Zhang. 2002

326 citations recorded by the source corpus.

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Investigation on the Failure Characteristics and Fracture Classification of Shale Under Brazilian Test Conditions (2020, background): “There is a positive correlation between the KIC and tensile strength (Zhang 2002), which means that, greater the tensile strength, larger is the KIC.”
Generalized crack initiation and crack damage stress thresholds of brittle rock masses near underground excavations (2004, background): “It is therefore reasonable to assume that sc=(55–82) KIC with sc=st 1⁄4 8–12, incorporating the correlation between st and KIC [43].”
Determination of Tensile Strength and Fracture Toughness of Granite Using Notched Three-Point-Bend Samples (2016, unknown): “The above estimated granite tensile strength and fracture toughness are fairly reasonable in comparison with collections of rock and granite properties (Zhang 2002).”
The Influence of Temperature on Mode I Fracture Toughness and Fracture Characteristics of Sandstone (2017, background): “Toughness is also influenced by the physical and mechanical properties of the rock itself, such as fracture toughness and tensile strength, which are correlated (Zhang 2002).”
A bonded-particle model for rock (2004, background): “(42) is the same as the empirical relation between fracture toughness and tensile strength of st 1⁄4 6:88K Ic suggested by Zhang [84].”