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Mostrando ítems 1-10 de 16
Ponencia
Micromechanical aspects of the inter-fibre failure in fibrous composite materials under bi-dimensional loads
(European Society for Composite Materials, 2004)
Many criteria have historically been proposed to predict failures in composites. Some of them were quasimimetically taken from metallic materials failure criteria and others were inspired by observation of the appearance ...
Ponencia
Estudio experimental a fatiga de laminados unidireccionales a 90⁰
(Grupo Español de Fractura, 2021-06-08)
La vida a fatiga de laminados unidireccionales a 90⁰ (UD-90) ha sido estudiada ante distintas condiciones de carga cíclica Tracción-Tracción (R=0.1). En primer lugar, el efecto de la porosidad se ha evaluado usando dos ...
Ponencia
Study of the influence of stacking sequence in the failure of crossply laminates manufactured with ultra-thin plies
(Asociación Española de Materiales Compuestos (AEMAC), 2024-01)
Numerous studies on the use of laminates manufactured with ultra-thin composite laminates have shown the existence of a significant delay in the appearance of damage, a phenomenon known as the Scale Effect. To study the ...
Ponencia
Experimental study of the use of ultra-thin plies in quasi-isotropic laminates under cyclic tension after impact
(Asociación Española de Materiales Compuestos (AEMAC), 2024-01)
In this work, the authors propose an experimental study on the possible improvement of the mechanical behaviour produced by ultra-thin plies in laminates subjected to cyclic loading after impact. More specifically, this ...
Ponencia
Design of a cruciform specimen for biaxial transverse tests
(Asociación Española de Materiales Compuestos (AEMAC), 2013-07)
The objective of this paper is the design of the adequate geometry of the cruciform specimens to be tested under biaxial transverse loads. To this end Finite Element models have been developed. The analysis of the results ...
Ponencia
Stress analysis of finite anisotropic plates with cutouts under displacement boundary conditions
(Asociación Española de Materiales Compuestos (AEMAC), 2015-07)
The aim of this article is to provide an analytical tool to estímate the stress concentration in anisotropic plates weakened by a circular or elliptical hole; it is achieved by developing Lekhnitskii formalism in order ...
Ponencia
Rotura de la matriz en materiales compuestos fibrosos. Efecto de las cargas paralelas al plano de rotura
(Asociación Española de Materiales Compuestos (AEMAC), 2001-11)
Muchos criterios de fallo de materiales compuestos asignan el fallo de la matriz a una cierta interacción (usualmente cuadrática) entre las componentes del vector tensión asociado al plano de fallo. En este trabajo se ...
Ponencia
Behaviour of fibre/matrix interface cracks under biaxial stress state caused by edge effect in carbon/epoxy laminates
(Asociación Española de Materiales Compuestos (AEMAC), 2024-01)
A recent study about the ''edge effect'' phenomenon in cross-ply laminates made of ultrathin plies composites has shown the presence of a relevant stress component through the laminate thickness. This fact implies that ...
Ponencia
Manufacturing and testing of a cruciform coupon for biaxial transverse tests
(International Committee on Composite Materials, 2015)
The present study deals with the manufacturing of cruciform coupons to be tested under tensile biaxial transverse loads. The objective is to obtain a geometry that minimizes the effect of stress concentrations, maximizes ...
Ponencia
Aspectos micromecánicos de grietas transversales de interfase entre fibra y matriz
(Asociación Española de Materiales Compuestos (AEMAC), 2001-11)
Se realiza un estudio micromecánico de la presencia de grietas transversales en materiales compuestos reforzados con fibra. El objetivo del estudio es clarificar la presencia de contacto entre la fibra y la matriz en ...