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Mostrando ítems 31-40 de 42
Artículo
Prediction of in-plane stiffness properties of Non-Crimp Fabric laminates by means of 3D Finite Element analysis
(Elsevier, 2008)
Non-crimp fabric (NCF) composites are constituted by differently oriented layers of ideally unidirectional fibre tows. However, a slight waviness always appears in the tows. The applicability of the General Laminate ...
Ponencia
Development of a prototype test system for certification of curved fuselage panels
(IOP Publishing Ltd, 2021-01)
A prototype test system with capacity to reproduce combined loads representative of real loading cases of a curved fuselage panel has been developed. This prototype test system allows the structural validation of curved ...
Artículo
Modelling the waviness of the fibres in non-crimp fabric composites using 3D finite element models with straight tows
(Elsevier, 2014-01)
A new approach to efficiently model the waviness of the fibres in non-crimp fabric (NCF) composites using mesoscale 3D finite element (FE) models with straight tows is presented. This approach omits the geometric curvature ...
Artículo
Three dimensional finite element study of the behaviour and failure mechanism of non-crimp fabric composites under in-plane compression
(Elsevier, 2016-08)
The compressive behaviour and the mechanism responsible for failure of a [0,90]n non-crimp fabric (NCF) laminate are studied using a 3D finite element (FE) model of the representative unit cell at the mesoscopic scale. The ...
Artículo
Determination of in-plane and through-the-thickness coefficients of thermal expansion in composite angle brackets using digital image correlation
(Elsevier, 2020-04)
A procedure for the simultaneous determination of in-plane and through-the-thickness coefficients of thermal expansion (CTEs) in composite angle brackets is presented. Carbon fibre/epoxy samples are heated and digital image ...
Tesis Doctoral
Study of the unfolding failure of curved composite laminates.
(2017-10-30)
The use of composite materials in structural applications has been considerably increased in the last years. This increment has introduced the use of composite laminates in complex components including highly curved zones. ...
Artículo
Analysis of a Crack in a Thin Adhesive Layer between Orthotropic Materials: An Application to Composite Interlaminar Fracture Toughness Test
(Tech Science Press, 2010)
The problem of a crack in a thin adhesive layer is considered. The adherents may have orthotropic elastic behavior which allows composite laminates to be modeled. In the present work a linear elastic-brittle constitutive ...
Ponencia
Modelos analíticos y numéricos para la predicción del fallo por unfolding en vigas de material compuesto
(AEMAC (Asociación Española de Materiales Compuestos), 2013-07)
El fallo por unfolding en vigas de pared delgada fabricadas con materiales compuestos es un fallo que viene preconizado por componentes del estado tensional que no se consideran en los modelos de cálculo de barras y ...
Tesis Doctoral
Analysis of failure mechanisms associated with the unfolding failure in CFRP Profiles
(2024-05-08)
The rapid increase in the usage of composite materials in the aerospace sector demands their introduction into primary and secondary structures involving complex geometries. Considering one such application of highly ...
Artículo
A simple stress-based failure criterion for predicting unfolding failure
(Elsevier Ltd., 2024-06)
Corners of highly curved composite laminates experience unfolding failure when they are loaded under opening bending moments. This work provides a comprehensive experimental test campaign and a detailed stress analysis to ...