Evaluation of Methods for Determining Crack Initiation in Compression Tests on Low-Porosity Rocks

By M. Nicksiar, C. Derek Martin. Rock Mechanics and Rock Engineering, 2012

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Objective Determination of Crack Initiation Stress of Brittle Rocks Under Compression Using AE Measurement (2015, methodology): “Crack initiation stresses of 77 crystalline rock specimens were determined by the proposed CAEH method and the LSR method (Nicksiar and Martin 2012), and the resulting mean rCI values determined using the two methods were comparable.”
Factors Affecting Crack Initiation in Low Porosity Crystalline Rocks (2014, methodology): “The results from the numerical grain-based models have provided insights into the mechanism associated with the laboratory findings by Nicksiar and Martin (2012) and summarized in Fig.”
Estimation of Crack Initiation and Propagation Thresholds of Confined Brittle Coal Specimens Based on Energy Dissipation Theory (2017, methodology): “In the stress–strain data (SSD) method, the axial stiffness, volumetric strain, and crack volume can be calculated based on stress and strain measurements, which have provided a description of crack development in rock (Brace et al. 1966; Lajtai 1974; Stacey 1981; Nicksiar and Martin 2012).”