Ermioni D. Pasiou et al. / Procedia Structural Integrity 13 (2018) 2101–2108 E. D. Pasiou, S. K. Kourkoulis , M. G. Tsousi, Ch. F. Markides/ Structural Integrity Procedia 00 (2018) 000–000
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the loading line. The transverse displacements at the same point are almost zero for all classes of specimens, as it was expected for symmetry reasons, supporting further the reliability of the experimental protocol. Similar conclusions are drawn for the dependence of the displacements on the eccentricity normally to the loading line, plotted in Fig.6b. Again, for small d-values (dR o /2 the transverse displacement tends to be stabilized. The dependence of the displacements on eccentricity along the specific locus is more intense compared to that along the loading line. References Addinall, E., Hackett, P., 1964. Tensile Failure in Rock-Like Materials. In: Spokes, E.M., Christiansen, C.R. (eds.) Proc. 6 th Symp. on Rock Mechanics. University of Missouri at Rolla, Rolla, 515-538. Akazawa, T., 1943. New Test Method for Evaluating Internal Stress due to Compression of Concrete (The Splitting Tension Test) (Part 1). J. Japan Soc Civ Eng 29, 777-787. Brynk, T., Laptiev, A., Tolochyn, O., Pakiela, Z., 2012. The Method of Fracture Toughness Measurement of Brittle Materials by Means of High Speed Camera and DIC. Comp Mater Sci 64, 221-224. Carneiro, F.L.L.B., 1943. A New Method to Determine the Tensile Strength of Concrete (in Portuguese). In: Proc. 5 th Meeting of the Brazilian Association for Technical Rules, 3d. Section, 16 September 1943, 126-129. Fairhurst, C., 1964. On the Validity of the ‘Brazilian’ Test for Brittle Materials. Int J Rock Mech Min Sci Geomech Abstr 1(4), 535-546. Filon, L.N.G., 1924. The Stresses in a Circular Ring. Selected Engineering Papers 1(12). Institution of Civil Engineers, London. Hobbs, D.W., 1964. The Tensile Strength of Rocks. Int J Rock Mech Min Sci Geomech Abstr 1(3), 385-396. Hobbs, D.W., 1965. An Assessment of a Technique for Determining the Tensile Strength of Rock. Br J Appl Phys 16(2), 259-268. Hondros, G., 1959. The Evaluation of Poisson’s Ratio and the Modulus of Materials of a Low Tensile Resistance by the Brazilian (Indirect Tensile) Test with Particular Reference to Concrete. Aust J Appl Sci 10(3), 243-268. Hooper, J.A., 1971. The Failure of Glass Cylinders in Diametral Compression. J Mech Phys Solids 19(4), 179-188. Hudson, J.A., 1969. Tensile Strength and the Ring Test. . Int J Rock Mech Min Sci Geomech Abstr 6(1), 91-97. Hudson, J.A., Brown, E.T., Rummel, F., 1972. The Controlled Failure of Rock Discs And Rings Loaded in Diametral Compression. Int J Rock Mech Min Sci Geomech Abstr 9(2), 241-248. ISRM, 1978. Suggested Methods for Determining Tensile Strength of Rock Materials. Int J Rock Mech Min Sci 15(3), 99-103. Jaeger, J.C., Hoskins, E.R., 1966. Stresses and Failure in Rings of Rock Loaded in Diametral Tension or Compression. Br J Appl Phys 17(5), 685 692. Kourkoulis, S.K., Darmanis, S., Papadogoulas, Α., Pasiou, E.D., 2017. 3D-DIC in the Service of Orthopaedic Surgery: Comparative Assessment of Fixation Techniques for Acetabular Fractures. Eng Fract Mech 183, 125-146. Kourkoulis, S.K., Markides, Ch.F., Bakalis, G., 2013a. Smooth Elastic Contact of Cylinders by Caustics: The Contact Length in the Brazilian-Disc Test. Arch Mech 65(4), 313-338. Kourkoulis, S.K., Markides, Ch.F., Chatzistergos, P.E., 2012. The Standardized Brazilian Disc Test as a Contact Problem. Int J Rock Mech Min Sci 57, 132-141. Kourkoulis, S.K., Markides, Ch.F., Hemsley, J.A., 2013b. Frictional Stresses at the Disc-Jaw Interface During the Standardized Execution of the Brazilian Disc Test. Acta Mech 224(2), 255-268. Lavrov, A, Vervoort, A., 2002. Theoretical Treatment of Tangential Loading Effects on the Brazilian Test Stress Distribution. Int J Rock Mech Min Sci 39(2), 275-283. Markides, Ch.F., Kourkoulis, S.K., 2012. The Stress Field in a Standardized Brazilian Disc: The Influence of the Loading Type Acting on the Actual Contact Length. Rock Mech Rock Eng 45(2), 145-158. Markides, Ch.F., Pazis, D.N., Kourkoulis, S.K., 2010. Closed Full-Field Solutions for Stresses and Displacements in the Brazilian Disk under Distributed Radial Load. Int J Rock Mech Min Sci 47(2), 227-237. Markides, Ch.F., Pazis, D.N., Kourkoulis, S.K, 2011. Influence of Friction on the Stress Field of the Brazilian Tensile Test. Rock Mech Rock Eng 44(1), 113-119. Mellor, M, Hawkes, I., 1971. Measurement of Tensile Strength by Diametral Compression of Discs and Annuli. Eng Geol 5(3), 173- 225. Pasiou, E.D., Kourkoulis, S.K., Markides, Ch.F., 2018. Numerical and analytic study of the stress field in eccentrically drilled discs (submitted). Ripperger, E., Davis, N., 1947. Critical Stresses in a Circular Ring. Trans Am Soc Civil Eng 112(1), 619-628 (Paper no 2308). Sutton, M.A., Cheng, M., Peters, W.H., Chao, Y.J., McNeill, S.R., 1986. Application of an Optimized Digital Correlation Method to Planar Deformation Analysis. Image and Video Computing 4, 143-150. Sutton, M.A., McNeill, S.R., Helm, J.D., Chao, Y.J., 2000. Advances in Two-Dimensional and Three-Dimensional Computer Vision, in “Photo mechanics” , Rastogi, P.K. (Ed.), Topics in Applied Physics, Springer, Berlin, 77, 323-372. Timoshenko, S.P., Goodier, J.N., 1951. Theory of Elasticity, 2 nd edition. Engineering Societies Monographs. McGraw-Hill, New York.