Analysis of the Damage Evolution in Steel Specimens under Tension by Means of XRCT

Suárez Guerra, Fernando and Gálvez Ruiz, Jaime and Cendón Franco, David Ángel and Atienza Riera, José Miguel and Sket, Federico and Molina Aldareguía, Jon M. (2017). Analysis of the Damage Evolution in Steel Specimens under Tension by Means of XRCT. In: "I Simposio Internacional de Fractura de Entallas", 29-31 marzo 2017, Santander, España. pp. 88-93.

Description

Title: Analysis of the Damage Evolution in Steel Specimens under Tension by Means of XRCT
Author/s:
  • Suárez Guerra, Fernando
  • Gálvez Ruiz, Jaime
  • Cendón Franco, David Ángel
  • Atienza Riera, José Miguel
  • Sket, Federico
  • Molina Aldareguía, Jon M.
Item Type: Presentation at Congress or Conference (Other)
Event Title: I Simposio Internacional de Fractura de Entallas
Event Dates: 29-31 marzo 2017
Event Location: Santander, España
Title of Book: Actas del I Simposio Internacional de Fractura de Entallas
Date: 2017
Subjects:
Freetext Keywords: Steel, XRCT, Damage Evolution
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 50802
DC Identifier: http://oa.upm.es/50802/
OAI Identifier: oai:oa.upm.es:50802
Deposited by: Memoria Investigacion
Deposited on: 16 May 2018 14:21
Last Modified: 28 May 2018 14:03
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