XTDIC three-dimensional full-field strain measurement system adopts non-contact strain measurement method, which is based on digital image correlation technology (DIC) technology, suitable for material strain and structural deformation, crack, fracture and damage analysis and testing. DIC three-dimensional strain measurement system can be used for three-dimensional vibration and deformation measurement, measuring the three axis displacement of the object surface. The strain division of the material surface can be calculated automatically from the obtained results.

IC754VGI06MTD In traditional rock mechanics tests, strain gauges are used for strain measurement. The strain gauge tends to measure the strain in a fixed direction and cannot achieve full-field measurement. The strain gauge can not accurately measure the maximum strain area because the rock deformation or fracture occurs in a large range. XTDIC three-dimensional full-field strain measurement system can obtain images of rock failure process, determine rock fracture properties, and analyze the displacement field and strain field of rock in the process of rock splitting failure in Brazil.

Brazilian rock splitting DIC test application

In the rock splitting test in Brazil, XTDIC three-dimensional full-field strain measurement system was combined with high-speed cameras to capture images of the rock failure process at high speed, and combined with DIC software to analyze the quantitative full-field strain diagram (tensile, compression and shear) generated under load to show the rock failure process and strain evolution process.

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DIC technique is used to study the full-field deformation and localized failure characteristics of rock in the process of Brazilian splitting failure

DIC software analysis found that the maximum principal strain in X/Y direction and the crack change trend were obvious during the rock material splitting process. The maximum strain region was analyzed by chromatogram, and the crack evolution and specific values were analyzed.

The maximum compressive stress that the rock can bear before failure under uniaxial compression load is called the uniaxial compressive strength of the rock. XTDIC three-dimensional full-field strain measurement system and high-speed camera are adopted to carry out full-field strain observation during the test process with a non-contact acquisition frequency of 5000 frames. The macroscopic mechanical parameters, spatial strain field evolution and failure modes of rock samples are compared and analyzed.

IC754VGI06MTD XTDIC three-dimensional full-field strain measurement system is used for image processing, visualization and analysis of rock compression failure process under testing machine load.
XTDIC three-dimensional full-field strain measurement system can measure and obtain the spatio-temporal evolution process of full-field strain of rock samples during loading, reveal the rock failure splitting and failure evolution process during loading, analyze the evolution of strain in the full-field and local monitoring area on the specimen surface over time, and provide test data for scientific research on rock brittle failure.