The effect of coating on the stiffness and toughness of encapsulated fiber composites

Theocaris, PS; Demakos, CB

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Demakos, CB	en
dc.date.accessioned	2014-03-01T01:07:17Z
dc.date.available	2014-03-01T01:07:17Z
dc.date.issued	1988	en
dc.identifier.issn	0303402X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9906
dc.subject	coating properties	en
dc.subject	elastic moduli	en
dc.subject	Encapsulated fiber composites	en
dc.subject	four-phase model	en
dc.subject	stiffness and toughness	en
dc.title	The effect of coating on the stiffness and toughness of encapsulated fiber composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01414401	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01414401	en
heal.publicationDate	1988	en
heal.abstract	The effect of the coating of the fiber on the stiffness and toughness of composite materials is presented in this paper. The type of composite material considered is of a macroscopically isotropic composite medium containing coated fibers. The models used to simulate such materials consists of: the cylindrical fiber, a cylindrical annulus of the coating, an annulus of the matrix enveloped by an infinite region of an equivalent composite consisting of a transversely isotropic material and representing the real composite with dispersed coated fibers. Solutions for the longitudinal, transverse and shear elastic moduli in the four-phase model were established assuming linear elastic conditions. The results were found to depend on the extent and the mechanical properties of the coating. The stiffness and toughness of the composite were evaluated in models representing plane-stress equatorial sections of the representative volume element of the real material according to the Hashin-Rosen model. The stiffness of the fiber composites was studied by varying the rigidity and the extent of the fiber-coating in the model and evaluating its influence on the overall mechanical behavior of the model. On the other hand, the toughness of the composite was evaluated by the method of caustics in models made of composite PMMA plates with PMMA inclusions coated with a ductile annulus. Interesting results were derived concerning the influence of the soft annulus on the mechanical behavior of the composite. © 1988 Steinkopff.	en
heal.publisher	Steinkopff-Verlag	en
heal.journalName	Colloid & Polymer Science	en
dc.identifier.doi	10.1007/BF01414401	en
dc.identifier.volume	266	en
dc.identifier.issue	12	en
dc.identifier.spage	1110	en
dc.identifier.epage	1125	en