Orienting Fibers by Extrusion in Reinforced Reactive Powder Concrete
Publication: Journal of Engineering Mechanics
Volume 127, Issue 6
Abstract
This paper deals with the problem of orienting short metal fibers (12 mm length, aspect ratio 60) in a reactive powder concrete during an extrusion process to manufacture reinforced tubes. By choosing an appropriate geometry for the die it is possible to orient the fibers in an orthoradial direction, which is the most efficient if one wishes to reinforce the tube for an internal pressure loading. This result is obtained with both a theoretical and an experimental approach. In a theoretical framework the authors carried out numerical modeling with a constitutive behavior deduced from the anisotropic suspensions theory. This calculus enabled the authors to design the shape of the die. Tubes have then been extruded and the fibers' orientation has been measured with optical microscopy.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Advani, S. G. ( 1994). Flow and rheology in polymer composites manufacturing, Elsevier Science, Amsterdam.
2.
Ausias, G. ( 1991). “Etude de l'Extrusion de Tubes en Polymères Thermoplastiques Chargés de Fibres Courtes.” PhD thesis, Ecole National Supérieure des Mines de Paris (in French).
3.
Batchelor, G. K. ( 1970). “Slender-body theory for particles of arbitrary cross section in Stokes flow.” J. Fluid Mech., Cambridge, U.K., 44, 419–440.
4.
Bernier, G., and Behloul, M. ( 1998). “Effet de l'orientation des fibres sur le comportement mécanique des BPR.” Revue française de Génie Civil, 2(1), 113–122 (in French).
5.
Meslin, F. ( 1997). “Propriétés Rhéologiques des Composites Fibres Courtes à l'Etat Fondu.” PhD thesis, Ecole Normale Superieure de Cachan (in French).
6.
Poitou, A., Chinesta, F., and Torres, R. ( 2000). “Numerical simulation of the steady recirculating flows of fibers suspensions.” J. Non-Newtonian Fluid Mech., 90, 65–80.
7.
Poitou, A., Racineux, G., and Burlion, N. ( 1997). “Identification and measurement of pastes rheological properties—Effects of water dissociation.” Water Sci. and Technol., 36(11), 19–26.
8.
Tucker, C. L., Ver Weyst, B. E., Foss, P. H., and O'Gara, J. F. ( 1999). “Modeling fiber orientation in 2D and 3D molded features.” Proc., 15th Annu. Meeting, Polymer Processing Soc. (on CD-ROM).
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 127 • Issue 6 • June 2001
Pages: 593 - 598
History
Received: Oct 27, 1999
Published online: Jun 1, 2001
Published in print: Jun 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.