Encontrados 8 documentos, a visualizar página 1 de 1
Impact strength of composites with nano-enhanced resin after fire exposure
Reis, P. N. B.; Ferreira, J. A. M.; Zhang, Z. Y.; Benameur, T.; Richardson, M. O. W.Composite materials have been widely used in several engineering applications. However, there are very few studies about the effects of nanoclays on the impact strength of laminates after exposure to the fire. Therefore, this paper intends to study this subject and the impact performance was analysed by low velocity impact tests carried out at different incident impact energy levels. For better dispersion and i...
Fatigue life evaluation for carbon/epoxy laminate composites under constant and...
Reis, P. N. B.; Ferreira, J. A. M.; Costa, J. D. M.; Richardson, M. O. W.http://www.sciencedirect.com/science/article/B6TWT-4TN82M4-1/2/ffb1a17eaf7390463ad097c3ba5d4e8f
Fatigue damage and environment interaction of polyester aluminized glass fiber ...
Ferreira, J. M.; Pires, J. T. B.; Costa, J. D.; Errajhi, O. A.; Richardson, M.Aluminized glass fiber composites in a polyester matrix were used in this work in an attempt to study their fatigue resistance under both dry and water saturated ambient conditions (compared to conventional glass fiber composites). These composites, containing specially modified fibers, exhibit increased thermal and electrical conduction properties whilst still being potentially adequate for many structural app...
Thermogravimetric analysis of aluminised E-glass fibre reinforced unsaturated p...
Ferreira, J. M.; Errajhi, O. A. Z.; Richardson, M. O. W.Novel aluminised E-glass fibre reinforced unsaturated polyester composites, originally formulated for enhanced thermal and electrical shielding properties were evaluated in terms of their thermal performance. The thermal degradation of these specimens was analysed using a thermogravimetric analyser (TGA). The samples were heated from ambient temperature to 500 °C at a heating rate of 20 °C/min. All specimens we...
Fatigue damage analysis of aluminized glass fiber composites
Ferreira, J. M.; Pires, J. T. B.; Costa, J. D.; Zhang, Z. Y.; Errajhi, O. A.; Richardson, M.Aluminized glass fiber composite with epoxy and polyester matrix were used in this work in order to study fatigue properties and its comparison to conventional glass fiber composites. Until now aluminized glass fiber materials have been only used as decoy flares in military applications. The innovative advantages of these composites, using modified fibers, are potentially the improvement of thermal and electric...
Stress analysis of lap joints involving natural fibre reinforced interface layers
Ferreira, J. M.; Silva, H.; Costa, J. D.; Richardson, M.This paper is concerned with a fatigue study of composite adhesive lap joints. The tests were carried out on specimen joints manufactured using different stacking sequences: solely bi-directional woven E-glass fibres and polypropylene composites; and hybrid stacked composites. The main objective of the work was to improve the fatigue strength using hybrid fibre composites with a polypropylene/hemp natural fibre...
Fatigue behaviour of composite adhesive lap joints
Ferreira, J. A. M.; Reis, P. N.; Costa, J. D. M.; Richardson, M. O. W.http://www.sciencedirect.com/science/article/B6TWT-45YG5WP-1/1/d57bc6251d123772bfdb57edd6cc3916
Analysis of fatigue and damage in glass-fibre-reinforced polypropylene composit...
Ferreira, J. A. M.; Costa, J. D. M.; Reis, P. N. B.; Richardson, M. O. W.This paper concerns fatigue studies of polypropylene/glass-fibre thermoplastic composites produced from a bi-directional woven cloth of co-mingled E-glass fibres and polypropylene fibres with a fibre volume fraction Vf of 0.338. The effect of lay-up design and load conditions on fatigue performance were investigated. The S-N curves, the rise in the temperature of the specimens, and the loss of stiffness during ...
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