Now showing items 59-77 of 77

    Methodology for the experimental characterisation of mode I delamination under different loading rates 

    Medina Escobar, Sergio Alonso (Date of defense: 2022-11-25)

    The rate-dependent behaviour of the interlaminar fracture toughness of fibre reinforced composites has been a matter of research during the last decades. However, the results obtained so far are not conclusive and further ...

    Metodologia de personalização de productos baseada em design centrado no utilizador. Methodology to design customized product based on user centered design 

    Providência, António Bernardo (Date of defense: 2012-07-26)

    This PHD is about design as a tool of interaction based in information systems, allowing not only to understand the relationship of design with the user, as also, based on User Centered Design, to create a methodology that ...

    Metodología y análisis de la fabricación de anhidrita en horno rotativo mediante elementos de inteligencia artificial 

    Gironès Güell, Xavier (Date of defense: 2013-01-21)

    For the manufacture of gypsum powder applied and checked on its setting, using multiple components. One of the intrinsic components of construction gypsum is the anhydrite, completely dehydrated gypsum, working as inert ...

    Micromechanical modelling of hybrid unidirectional composite materials under fibre tensile loading 

    Guerrero Garcia, José Manuel (Date of defense: 2020-02-07)

    In this thesis, a micromechanical model for predicting the tensile failure process in hybrid and non-hybrid unidirectional composite materials under fibre tensile loading is developed. Derived from this, the influence that ...

    Milling stability improvement through novel prediction and suppression techniques 

    Iglesias, Alex (Date of defense: 2016-02-04)

    Chatter is one of the major problems in today’s milling processes. Theoretical models to calculate stability lobes are used to predict and avoid chatter onset. However, current predictions are not accurate enough and ...

    Modelización constitutiva y computacional del daño y la fractura de materiales compuestos 

    Maimí Vert, Pere (Date of defense: 2007-04-27)

    En el trabajo se definen modelos constitutivos que permiten reproducir el proceso de fallo de estructuras de materiales compuestos en distintas escalas bajo cargas estáticas. <br/>Se define un modelo constitutivo para ...

    New approaches for the study and treatment of aggressive cancers 

    Polonio Alcalá, Emma (Date of defense: 2023-05-17)

    Although there are therapies for triple negative breast cancer (TNBC) and epidermal growth factor-mutated non-small cell lung cancer (EGFRm NSCLC), these two subtypes of cancer are very aggressive, and most patients develop ...

    Nominal strength and size effect of quasi-brittle structures with holes 

    Kabeel, Abdallah Mahmoud Bayoumi (Date of defense: 2015-04-15)

    The main contribution of this work is to introduce analytical models able to create simple design charts that would allow designers to quickly determine the strength of quasi-brittle structures containing circular holes. ...

    Optimització d'extracció de diluents no reactius en tintes / adhesius aplicats sobre substrats per a envasos flexibles 

    Ricart Ferrer, Josep (Date of defense: 2019-02-07)

    The reason for the writing of this doctoral thesis arises from the commitment adopted by COMEXI in order to put its products in the market making his products more sustainable and environmentally friendly. Is in this ...

    Predicción de la fatiga de disipadores de energía elastoplásticos para estructuras sismorresistentes 

    Simon Madrenas, Enric (Date of defense: 2021-11-17)

    Elastoplastic energy dissipators are used in earthquake-resistant design in order to dissipate a substantial part of the seismic energy acting on a building. They are elements that are not part of the load-bearing structure ...

    Reducció de vibracions residuals en moviments transitoris. Definició de lleis de moviment per mitjà de corbes B-spline 

    Veciana, Joaquim M. (Joaquim Maria) (Date of defense: 2007-11-14)

    Molts sistemes mecànics existents tenen un comportament vibratori funcionalment perceptible, que es posa de manifest enfront d'excitacions transitòries. Normalment, les vibracions generades segueixen presents després del ...

    Response of composite laminates under out-of-plane loading 

    Wagih Abdallah Abdel Hady, Ahmed (Date of defense: 2018-05-28)

    The objective of the thesis is to provide scaling tool predicting the response of composite structures under out-of-plane loading by testing small coupons. This global objective cannot be achieved without understanding the ...

    Serviceability behaviour of fibre reinforced polymer reinforced concrete beams 

    Barris Peña, Cristina (Date of defense: 2011-02-11)

    El uso de materiales compuestos de matriz polimérica (FRP) emerge como alternativa al hormigón convencionalmente armado con acero debido a la mayor resistencia a la corrosión de dichos materiales. El presente estudio ...

    Simulation of delamination in composites under quasi-static and fatigue loading using cohesive zone models 

    Turon Travesa, Albert (Date of defense: 2006-12-18)

    Es desenvolupa una eina de disseny per l'anàlisi de la tolerància al dany en composites. L'eina pot predir el inici i la propagació de fisures interlaminars. També pot ser utilitzada per avaluar i planificar la necessitat ...

    Simulation of interlaminar and intralaminar damage in polymer-based composites for aeronautical applications under impact loading 

    González Juan, Emilio Vicente (Date of defense: 2011-03-08)

    La aplicación de materiales compuestos de matriz polimérica reforzados mediante fibras largas (FRP, Fiber Reinforced Plastic), está en gradual crecimiento debido a las buenas propiedades específicas y a la flexibilidad en ...

    Stability lobes diagram identification and surface roughness monitoring in milling processes 

    Quintana i Badosa, Guillem (Date of defense: 2010-01-14)

    La millora de la productivitat i la qualitat són indubtablement dues de les principals exigències del sector productiu modern i factors clau per la competitivitat i la supervivència. Dins aquest sector,la fabricació per ...

    Study of bond behaviour between FRP reinforcement and concrete 

    Baena Muñoz, Marta (Date of defense: 2011-02-14)

    El uso de barras de materiales compuestos (FRP) se propone como una alternativa efectiva para las tradicionales estructuras de hormigón armadas con acero que sufren corrosión en ambientes agresivos. La aceptación de estos ...

    Towards a high-performance computing finite element simulation framework for virtual testing of composite structures 

    Quintanas Corominas, Adrià (Date of defense: 2019-10-11)

    his doctoral thesis aims at developing and implementing a computational framework for performing virtual testing of composite structures using a High-Performance Computing (HPC) environment. In this sense, this thesis ...

    Variable mixed-mode delamination in composite laminates under fatigue conditions: testing & analysis 

    Blanco Villaverde, Norbert (Date of defense: 2005-01-21)

    La majoria de les fallades en elements estructurals són degudes a càrrega per fatiga. En conseqüència, la fatiga mecànica és un factor clau per al disseny d'elements mecànics. En el cas de materials compòsits laminats, el ...