Advances in X-ray Tomography for Geomaterials - download pdf or read online
By Jacques Desrues, Gioacchino Viggiani, Pierre Bésuelle
This publication brings jointly a complete of forty eight contributions (including five keynote papers) which have been awarded on the second overseas Workshop at the program of X-ray CT for Geomaterials (GeoX 2006) held in Aussois, France, on 4-7 October, 2006.
The contributions conceal a variety of themes, from basic characterization of fabric habit to functions in geotechnical and geoenvironmental engineering. contemporary advances of X-ray expertise, and software program also are mentioned. As such, it will be priceless examining for a person drawn to the appliance of X-ray CT to geomaterials from either basic and utilized perspectives.Content:
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The full specimen height) for this relaxation to be relatively small. Deviator stress q is plotted as a function of axial strain εa in Figure 2 for both tests. All stresses and strains are positive in compression. The numbers noted on each curve are the scanning step numbers. In test ESTSYN01, the deviator stress first increases (almost linearly up to step 2), then attains a peak value of 28 MPa around step 3 and finally decreases, essentially leveling off at about 19 MPa after step 5. A single shear band formed in the specimen during the test, which could be clearly observed by the eye at the end of the test.
The particles contain dark parts which are considered to be voids inside the particles. 1 mm. This is an example of the spatial resolution of our X-ray CT scanner. Keynote lectures Figure 6. Granulated blast furnace slag 59 Figure 7. Enlarged CT image of granulated blast furnace slag The voxel size can be changed as required according to the purpose (Figure 8). For example, in this study, the scanning space was divided into 512 × 512 or 2048 × 2048 voxels. 12 mm × 1 mm. 01 mm. Three-dimensional images were reconstructed by superposing 2-dimensional images.
950-960, 2006. , “Tomographic 3D-DSP: measurement of internal deformations”, Proc. 12th Int. Conf. on Experimental Mechanics ICEM12, Bari, Italy, p. 217-226, 29 august-2 sept. 2004. Gudehus G. , “Evolution of shear bands in sand”, Géotechnique, vol. 54, p. 187201, 2004. , “Improved three-dimensional image correlation for surface displacement measurement”, Optical Engineering, vol. 35 no. 7, p. 1911-1920, 1996. , “Microstructural analysis of strain localisation in clay”, Computers and Geotechnics, vol.
Advances in X-ray Tomography for Geomaterials by Jacques Desrues, Gioacchino Viggiani, Pierre Bésuelle