Determine of Shale Tensile Strength by Using Brazilian Disc Test
نویسندگان
چکیده
منابع مشابه
Determination of Tensile Strength and Crack Growth of a Typical Polymer Concrete Using Circular Disc Samples
Cracked and un-cracked Brazilian disc specimens subjected to diametral compression were used for conducting fracture toughness and tensile strength experiments on a polymer concrete (PC) material. The value of mode I fracture toughness (KIc) was determined from the center- cracked Brazilian disc and the indirect tensile strength (σt) was obtained from the un-cracked Brazilian disc specimen. The...
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For a proper analysis of cortical bone behaviour, it is essential to take into account both the elastic stiffness and the failure criteria. While ultrasound methods allow complete identification of the elastic orthotropic coefficients, tests used to characterise the various failure mechanisms and to identify the brittle tensile strength in all directions are currently inadequate. In the present...
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Shale formations show obvious anisotropic characteristics in their mechanical properties due to pronounced bedding planes and natural fractures. This anisotropic behavior generally creates complex fracturing networks and is crucial to gas shale stimulation. Although much research has been done to study the anisotropic compression behaviors of shale with static and quasi-static strain rates, the...
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A rock failure criterion is very important for prediction of the ultimate strength in rock mechanics and geotechnics; it is determined for rock mechanics studies in mining, civil, and oil wellborn drilling operations. Also shales are among the most difficult to treat formations. Therefore, in this research work, using the artificial neural network (ANN), a model was built to predict the ultimat...
متن کاملEstimation of the tensile elastic modulus using Brazilian disc by applying diametrically opposed concentrated loads
The tensile elastic modulus Et of a rock is different from the compressive elastic modulus Ec, due to inhomogeneity and microcracks. There is no convenient method to obtain Et except using direct tension tests. However, the direct tension test for rock materials is difficult to perform, because of stress concentrations, and the difficulty of preparing specimens. We have developed a new method t...
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ژورنال
عنوان ژورنال: DEStech Transactions on Environment, Energy and Earth Science
سال: 2017
ISSN: 2475-8833
DOI: 10.12783/dteees/edep2016/5925