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dc.contributor.authorPapanastasiou, T. C.en
dc.contributor.authorAlexandrou, Andreas N.en
dc.creatorPapanastasiou, T. C.en
dc.creatorAlexandrou, Andreas N.en
dc.date.accessioned2019-05-06T12:24:18Z
dc.date.available2019-05-06T12:24:18Z
dc.date.issued1987
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/48698
dc.description.abstractThe extrusion of a rod-like fiber suspension is a Newtonian solvent, as a first step to the fast and inexpensive production of composite materials, is investigated. The analysis is carried out by means of an integral constitutive equation for a non-dilute suspension, streamlined finite element for liquid with memory, and Newton iteration of nonlinear integro-differential equations. The predictions show substantial differences between dilute and nondilute fiber suspension regarding the processing conditions (pressure drop, velocity distribution, die-swell) and the resulting fiber orientation. Nondilute fiber suspensions exhibit substantial shear-thinning and negligible elasticity as evidenced by the small die-swell, and fiber concentration viscosity-thickening as evidenced by the large pressure drop. The fiber orientation is computed by solving the orientation distribution function along selected streamlines of the complex velocity field. It is shown that the fiber orientation far downstream can be made independent of the random fiber orientation at the inlet. © 1987.en
dc.language.isoengen
dc.sourceJournal of Non-Newtonian Fluid Mechanicsen
dc.subjectCOMPOSITE MATERIALS - Fiber Reinforceden
dc.subjectFIBER ORIENTATIONen
dc.subjectFIBER SUSPENSIONSen
dc.subjectINTEGRAL CONSTITUTIVE EQUATIONen
dc.subjectORIENTATION DISTRIBUTION FUNCTIONen
dc.subjectSUSPENSIONSen
dc.titleIsothermal extrusion of non-dilute fiber suspensionsen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/0377-0257(87)85032-2
dc.description.volume25
dc.description.startingpage313
dc.description.endingpage328
dc.author.facultyΠολυτεχνική Σχολή / Faculty of Engineering
dc.author.departmentΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.type.uhtypeArticleen
dc.description.totalnumpages313-328


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