SPECIFICS OF STRAIN MEASUREMENTS IN ROCKS USING VIRTUAL (NON-CONTACTING) EXTENSOMETERS
P. A. Tsoi1,2, O. M. Usol'tseva1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: Деформации, бесконтактное измерение, корреляция цифровых изображений, образцы горных пород, Strains, contactless measurement, digital image correlation, hard rock samples
Abstract
A non-contact method for strain measurements with virtual extensometers during the mechanical testing of rocks and equivalent geomaterials is considered. The measuring procedure is analyzed based on the geometric shape and surface of the sample.
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