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The Evolution of Internal Damage Identified by Means of X-Ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling
Suárez, F.; Sket, F.; Gálvez, J.C.; Cendón, D.A.; Atienza, J.M.; Molina-Aldareguia, J. The Evolution of Internal Damage Identified by Means of X-ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling. Metals2019, 9, 292.
Suárez, F.; Sket, F.; Gálvez, J.C.; Cendón, D.A.; Atienza, J.M.; Molina-Aldareguia, J. The Evolution of Internal Damage Identified by Means of X-ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling. Metals 2019, 9, 292.
Suárez, F.; Sket, F.; Gálvez, J.C.; Cendón, D.A.; Atienza, J.M.; Molina-Aldareguia, J. The Evolution of Internal Damage Identified by Means of X-ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling. Metals2019, 9, 292.
Suárez, F.; Sket, F.; Gálvez, J.C.; Cendón, D.A.; Atienza, J.M.; Molina-Aldareguia, J. The Evolution of Internal Damage Identified by Means of X-ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling. Metals 2019, 9, 292.
Abstract
This paper analyses the evolution of the internal damage in two types of steel that show different fracture behaviours, with one of them being the initial material used for manufacturing prestressing steel wires, which shows a flat fracture surface perpendicular to the loading direction, and the other one being a standard steel used in reinforced concrete structures, which shows the typical cup-cone surface. 3mm-diameter cylindrical specimens are tested with a tensile test carried out in several loading stages and, after each of them, unloaded and analysed with X-ray tomography, which allows detection of internal damage throughout the tensile test. In the steel used for reinforcement, damage is developed progressively in the whole specimen, as predicted by Gurson-type models, while in the steel used for manufacturing prestressing steel-wire damage is developed only in the very last part of the test. In addition to the experimental study, a numerical analysis is carried out by means of the finite element method by using a Gurson model to reproduce the material behaviour.
Keywords
Steel; Tensile Test; XRCT; Damage Evolution; Gurson Model
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
