{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T00:53:35Z","timestamp":1775091215348,"version":"3.50.1"},"reference-count":27,"publisher":"Emerald","issue":"2","license":[{"start":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T00:00:00Z","timestamp":1523836800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EC"],"published-print":{"date-parts":[[2018,4,16]]},"abstract":"<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title>\n<jats:p>This study aims to achieve a \u201cpseudo-ductile\u201d behaviour in the response of hybrid fibre reinforced composites under uniaxial traction by solving properly formulated optimization problems.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title>\n<jats:p>The composite material model is based on the combination of different types of fibres (with different failure strains or strengths) embedded in a polymer matrix. The composite failure under tensile load is predicted by analytical models. An optimization problem formulation is proposed and a Genetic Algorithm is used. Multi-objective optimization problems balancing failure strength and ductility criteria are solved providing optimal mixtures of fibres whose properties may come either from a pre-defined list of materials, currently available in the market, or simply assuming their continuum variation within predefined bounds, in an attempt to attain unprecedented performance levels.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Findings<\/jats:title>\n<jats:p>Optimal solutions of hybrid fibre reinforced composites exhibiting pseudo-ductile behaviour are presented. It is found that a fibre made from a material exhibiting relatively low stiffness combined with high strength is preferred for hybridization. Furthermore, the ratio of the average failure\/critical strains between the low and high elongation fibres to be hybridized must be equal or greater than two.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title>\n<jats:p>Typically, a ductile failure is an inherent property of metals, that is, their typical response curve after the linear (elastic) region exhibits a yielding plateau still followed by an increase in stress till collapse. In stark contrast, composite materials exhibit (under some loading conditions) brittle failure that may limit their widespread usage. Therefore, a \u201cpseudo-ductility\u201d in composites is valued and targeted through optimization which is the main original contribution here.<\/jats:p>\n<\/jats:sec>","DOI":"10.1108\/ec-11-2017-0427","type":"journal-article","created":{"date-parts":[[2018,2,28]],"date-time":"2018-02-28T19:22:49Z","timestamp":1519845769000},"page":"904-931","source":"Crossref","is-referenced-by-count":2,"title":["Optimization of hybrid polymer composites under uniaxial traction"],"prefix":"10.1108","volume":"35","author":[{"given":"F\u00e1bio Monteiro","family":"Conde","sequence":"first","affiliation":[]},{"given":"Pedro Gon\u00e7alves","family":"Coelho","sequence":"additional","affiliation":[]},{"given":"Rodrigo Paiva","family":"Tavares","sequence":"additional","affiliation":[]},{"given":"Pedro Castro","family":"Camanho","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9 Miranda","family":"Guedes","sequence":"additional","affiliation":[]},{"given":"Helder Carri\u00e7o","family":"Rodrigues","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"key":"key2020092911061315900_ref001","volume-title":"Introduction to Optimum Design","year":"2016","edition":"4th"},{"issue":"1","key":"key2020092911061315900_ref002","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/0266-3538(95)00131-X","article-title":"Statistics for the strength and size effects of microcomposites with four carbon fibres in epoxy resin","volume":"56","year":"1996","journal-title":"Composites Science and Technology"},{"key":"key2020092911061315900_ref003","unstructured":"Conde, F.M. 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