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Introduction of X-ray CT application in geotechnical engineering – theory and practice

Abstract : In this paper, fundamental issues on the use of X-ray CT to geomaterials were discussed, which were the contents of what you have to know about the use of X-ray CT, especially for geomaterials or granular materials. Then, two of our recent studies were introduced, which are 1) the use of X-ray CT data to quantitative measurements such as deformation and strains and 2) comparison of X-ray CT results with numerical analysis. Here, the triaxial compression test on sand was conducted and the image analysis technique called "Digital Image Correlation" was used to measure displacement and strain fields in the soils using a large number of CT images. For the second topic, one of the advantages on the use of X-ray CT is to investigate the behavior in three dimensions. Here, so called trap door test was conducted with the materials of glass beads and the shape of the square door. DEM analysis was also conducted for the simulation of this behaviour and both results were compared. Based on all the results in this paper, the effectiveness of the use of X-ray CT in geomechanics and geotechnical engineering was revealed.
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https://hal.uca.fr/hal-02118862
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Submitted on : Tuesday, November 17, 2020 - 4:09:48 PM
Last modification on : Thursday, November 19, 2020 - 2:34:15 PM

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J Otani, Y Watanabe, Bastien Chevalier. Introduction of X-ray CT application in geotechnical engineering – theory and practice. 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics, Jul 2010, Sydney, Australia. pp.012089, ⟨10.1088/1757-899X/10/1/012089⟩. ⟨hal-02118862⟩

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