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Memorias de investigación
Communications at congresses:
Analysis of the damage evolution in steel specimens under tension by means of XRCT
Year:2017
Research Areas
  • Characteristic of the materials,
  • Construction of engineering
Information
Abstract
When a steel specimen is tested under tension, damage usually develops evenly all along the specimen, finally necking and leading to the typical cup-cone fracture surface. Nevertheless, some steels present an unusual fracture pattern consisting on a plane fracture surface with a dark region in the centre of the fracture zone. In this contribution, the authors analyse the evolution of the internal damage by using X-ray computed tomography (XRCT) on 3mm-diametre specimens of two steels. The specimens are tested in subsequent loading steps, after each of which it is unloaded and analysed with XRCT. This procedure helps to identify the evolution of damage developed inside each specimen at predefined strain levels. XRCT reveals a very high initial porosity in the material with the cup-cone fracture pattern and a very low initial porosity in the other. In the latter, fracture is triggered by a concentrated internal damage that can be seen as an internal notch which produces a stress concentration that leads to the eventual failure.
International
Si
Congress
International Symposium on Notch Fracture
960
Place
Reviewers
Si
ISBN/ISSN
978-84-617-9463-8
Start Date
29/03/2017
End Date
31/03/2017
From page
88
To page
93
Proceedings of the International Symposium on Notch Fracture
Participants
  • Autor: Fernando Suarez Guerra (UPM)
  • Autor: Jaime Carlos Galvez Ruiz (UPM)
  • Autor: David Angel Cendon Franco (UPM)
  • Autor: Jose Miguel Atienza Riera (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Grupo de Investigación: Tecnología de la Construcción y Ciencia de los Materiales para la edificación y la obra Civil
  • Departamento: Ciencia de Materiales
  • Departamento: Ingeniería Civil: Construcción
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