An experimental and theoretical study of the stress transfer problem in fibrous composites

Anagnostopoulos, G; Parthenios, J; Andreopoulos, AG; Galiotis, C

dc.contributor.author	Anagnostopoulos, G	en
dc.contributor.author	Parthenios, J	en
dc.contributor.author	Andreopoulos, AG	en
dc.contributor.author	Galiotis, C	en
dc.date.accessioned	2014-03-01T01:21:48Z
dc.date.available	2014-03-01T01:21:48Z
dc.date.issued	2005	en
dc.identifier.issn	1359-6454	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16386
dc.subject	Fiber reinforced composites	en
dc.subject	Modeling	en
dc.subject	Raman spectroscopy	en
dc.subject	Shear-lag	en
dc.subject	Tension test	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Composite materials	en
dc.subject.other	Computer simulation	en
dc.subject.other	Differential equations	en
dc.subject.other	Fibers	en
dc.subject.other	Load testing	en
dc.subject.other	Polymers	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	Tensile testing	en
dc.subject.other	Fiber reinforced composites	en
dc.subject.other	Shear-lag	en
dc.subject.other	Tension test	en
dc.subject.other	Transfer of load	en
dc.subject.other	Stress analysis	en
dc.title	An experimental and theoretical study of the stress transfer problem in fibrous composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.actamat.2005.04.047	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.actamat.2005.04.047	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The problem of efficient stress transfer in two-phase composites is very intriguing as it is a prerequisite for the attainment of satisfactory mechanical performance in these materials. Many micromechanical models are now available for the prediction of the stress distribution on either phase or at the interface. Some of the existing models are based on poor assumptions while others are too complex to be applied directly without prior knowledge of all the elastic constants of the constituent materials and their inter-dispersion in the composite. In this paper, an attempt is made to revisit the shear-lag type of model applying it to a specific class of two-phase materials, that of long-fiber polymer composites. The experimental tool used to verify the theoretical stress distributions is the technique of laser Raman microscopy (LRM). By introducing, a local fiber discontinuity in a composite of high volume fraction we could determine both the axial fiber build-up and the corresponding interfacial shear-stress distribution at all strain levels using LRM. The results are compared to the theoretical shear-lag curves (elastic region) and useful conclusions are drawn for the universality of these models and their applicability to high volume fraction polymer composites. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Acta Materialia	en
dc.identifier.doi	10.1016/j.actamat.2005.04.047	en
dc.identifier.isi	ISI:000231642600017	en
dc.identifier.volume	53	en
dc.identifier.issue	15	en
dc.identifier.spage	4173	en
dc.identifier.epage	4183	en