Now showing items 54-73 of 77

    Improved delamination resistance of thin-ply based laminates: an experimental and numerical study 

    Guillamet Busquets, Gerard (Date of defense: 2016-07-11)

    Departing from an emerging technology such as the spread tow thin-ply technology, in which the ply thickness can be significantly reduced, the overall purpose of this thesis is motivated by the industry need to better ...

    Improving compression after impact response of composite laminates through ply level hybridization with thin plies and unsymmetrical designs 

    Sasikumar, Aravind (Date of defense: 2019-07-18)

    Despite the weight savings, composite materials are vulnerable to impact loads mainly due to the alarming reduction in the compression after impact strength (CAI). This thesis exploits the potential of laminate designs ...

    Incremental sheet forming applied to the manufacturing of biocompatible polymer prostheses 

    Bagudanch Frigolé, Isabel (Date of defense: 2017-11-16)

    Incremental Sheet Forming (ISF) technology has been mainly applied on metallic sheets during the last years. ISF is used due to its flexibility, low costs, low batch production, production of complex geometries and customized ...

    Influencia del proceso de reciclado sobre las propiedades de los materiales compuestos obtenidos por inyección de poliestireno reforzado con fibras lignocelulósicas 

    López Sánchez, Ángel (Date of defense: 2004-07-27)

    The objective of this research is to study the influence of several recycling cycles on the mechanical properties of four different materials made by the injection of polystyrene. <br/>The four materials studied have ...

    L'Eixample Malagrida d'Olot: urbanisme i arquitectura a la Catalunya-ciutat-jardí 

    Vergés Tejero, Arnau (Date of defense: 2021-03-12)

    THE GARDEN CITY. This is the name under which Eixample Malagrida (the extension district) of the city of Olot is known; this is what it was called in the only plans available to us of the project that was born in the middle ...

    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 ...