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Edge tracing technique to study post--necking behavior and failure in Al--alloys and anisotropic plasticity in line pipe steels
  • +2
  • Zacharie Shokeir,
  • Jacques Besson,
  • Chiraz Belhadj,
  • Tom Petit,
  • Yazid Madi
Zacharie Shokeir
Université Paris-Saclay CEA DES - Service d’Etude des Matériaux Irradiés 91191 Gif-sur-Yvette France

Corresponding Author:[email protected]

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Jacques Besson
MINES Paris PSL Research University Centre des Matériaux CNRS UMR 7633 BP 87 91003 Evry France
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Chiraz Belhadj
MINES Paris PSL Research University Centre des Matériaux CNRS UMR 7633 BP 87 91003 Evry France
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Tom Petit
Université Paris-Saclay CEA DES - Service d’Etude des Matériaux Irradiés 91191 Gif-sur-Yvette France
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Yazid Madi
MINES Paris PSL Research University Centre des Matériaux CNRS UMR 7633 BP 87 91003 Evry France
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Abstract

The recently developed Edge Tracing (ET) method allows to estimate the radial deformation in axisymmetric tensile specimens via analysis of digital images recorded during the experiments. Images are processed to detect the sample’s contours and therefore, estimate the minimal cross–section diameter. This technique was mainly developed to characterize the elastic–plastic behavior well beyond the necking strain. The aim of this work is to extend the ET method to two case studies. Firstly, the post–necking behavior and failure of a low ductility Al–alloy are investigated. Low ductility alloys tend to fail brutally after reaching the maximum load. The major result is the capture of the sharp load drop which allowed to calibrate parameters of a GTN damage model. Secondly, the anisotropic elastic–plastic behavior of a “vintage” line pipe steel is characterized by a direct measurement of the Lankford coefficient. Assembled experimental data allowed to model the anisotropic plasticity in different loading directions.
27 Jan 2022Submitted to Fatigue & Fracture of Engineering Materials & Structures
27 Jan 2022Submission Checks Completed
27 Jan 2022Assigned to Editor
03 Feb 2022Reviewer(s) Assigned
24 Mar 2022Review(s) Completed, Editorial Evaluation Pending
26 Mar 2022Editorial Decision: Revise Major
07 Apr 20221st Revision Received
07 Apr 2022Submission Checks Completed
07 Apr 2022Assigned to Editor
07 Apr 2022Reviewer(s) Assigned
25 Apr 2022Review(s) Completed, Editorial Evaluation Pending
04 May 2022Editorial Decision: Revise Major
07 May 20222nd Revision Received
07 May 2022Submission Checks Completed
07 May 2022Assigned to Editor
13 May 2022Reviewer(s) Assigned
13 May 2022Review(s) Completed, Editorial Evaluation Pending
23 May 2022Editorial Decision: Accept
Sep 2022Published in Fatigue & Fracture of Engineering Materials & Structures volume 45 issue 9 on pages 2427-2442. 10.1111/ffe.13754