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Mechanical and structural characterization of nonsintered and sintered steel wools by x-ray tomography: Description of the techniques and validation on virtual materials

Published online by Cambridge University Press:  15 October 2013

J.P. Masse ,
C. Barbier ,
L. Salvo ,
Y. Bréchet ,
O. Bouaziz  and
D. Bouvard
J.P. Masse*
Affiliation:
ArcelorMittal Research, Voie Romaine, 57283 Maizières Les Metz, France
C. Barbier
Affiliation:
LAMCOS, INSA Lyon 18-20, rue des Sciences F69621 Villeurbanne Cédex, France
L. Salvo
Affiliation:
SIMAP Institut National Polytechnique de Grenoble, 38402 Saint Martin d’Hères, France
Y. Bréchet
Affiliation:
SIMAP Institut National Polytechnique de Grenoble, 38402 Saint Martin d’Hères, France
O. Bouaziz
Affiliation:
ArcelorMittal Research, Voie Romaine, 57283 Maizières Les Metz, France; and Centre des Matériaux/Mines Paris, Paristech, CNRS-UMR7633, 91003, Evry cedex, France
D. Bouvard
Affiliation:
SIMAP Institut National Polytechnique de Grenoble, 38402 Saint Martin d’Hères, France
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Properties of entangled materials, made of fibers, depend on the number and the nature of contacts between fibers and fibers orientation. Nonsintered and sintered steel wools have been characterized by x-ray tomography to extract structural information such as fibers orientation and number of contacts before and during compression. Image analysis techniques were developed on tomography images and validated on virtual materials, generated and deformed by numerical simulation based on molecular dynamic equations. The structural parameters measured during the structural characterization were finally used to link the structure of the studied material with the measured mechanical properties. To do this link, an analytical model usually used for this kind of material was modified to describe the evolution of mechanical properties in compression.

Keywords

entangled materialssteel woolx-ray tomographymechanical propertiesstructural characterization
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 20 , 28 October 2013 , pp. 2852 - 2860
Copyright
Copyright © Materials Research Society 2013 

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References

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