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dc.contributor.authorTu, Shengwen
dc.contributor.authorRen, Xiaobo
dc.contributor.authorHe, Jianying
dc.contributor.authorZhang, Zhiliang
dc.description.abstractFor metallic materials, standard uniaxial tensile tests with round bar specimens or flat specimens only provide accurate equivalent stress–strain curve before diffuse necking. However, for numerical modelling of problems where very large strains occur, such as plastic forming and ductile damage and fracture, understanding the post‐necking strain hardening behaviour is necessary. Also, welding is a highly complex metallurgical process, and therefore, weldments are susceptible to material discontinuities, flaws, and residual stresses. It becomes even more important to characterize the equivalent stress–strain curve in large strains of each material zone in weldments properly for structural integrity assessment. The aim of this paper is to provide a state‐of‐the‐art review on quasi‐static standard tensile test for stress–strain curves measurement of metallic materials. Meanwhile, methods available in literature for characterization of the equivalent stress–strain curve in the post‐necking regime are introduced. Novel methods with axisymmetric notched round bar specimens for accurately capturing the equivalent stress–strain curve of each material zone in weldment are presented as well. Advantages and limitations of these methods are briefly discussed.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjecttensile testen_US
dc.subjectpost‐necking strain hardeningen_US
dc.subjectequivalent stress–strain curveen_US
dc.subjectdiffuse neckingen_US
dc.subjectBridgman correctionen_US
dc.titleStress-strain curves of metallic materials and post-necking strain hardening characterization: A Reviewen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2019 The Authors. Fatigue & Fracture of Engineering Materials & Structures published by John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.source.journalFatigue & Fracture of Engineering Materials & Structuresen_US
dc.relation.projectNorges forskningsråd: 228513en_US
cristin.unitnameMaterialer og nanoteknologi

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal