Now showing items 6-25 of 77

    Emissions reduction potential by coupling a thermoelectric generator to an exhaust heater in heavy duty vehicles 

    Ximinis Tarrés, Joan (Date of defense: 2022-09-07)

    First part of this research is focused in validating the Exhaust Gas Heater (EGH) viability in reducing NOx emissions without negative effects in a standard exhaust gas circuit. Experimentation was held using a HDV Euro ...

    Design and fabrication of three-dimensional scaffolds for breast cancer stem cell expansion and molecular characterization 

    Rabionet Diaz, Marc (Date of defense: 2021-11-08)

    Triple negative breast cancer (TNBC) accounts for 15-20% of the breast cancers and displays an aggressive profile, poor prognosis, high relapse risk and does not have a targeted therapy. In the last years, breast cancer ...

    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 ...

    Bond behaviour between CFRP and concrete for NSM systems under sustained loading 

    Gómez Colom, Javier (Date of defense: 2022-01-14)

    The rehabilitation of civil structures has been gaining importance during the last decades. Owing to their mechanical, corrosion resistance and lightweight properties, Carbon Fibre-Reinforced Polymers (CFRP) present an ...

    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 ...

    Development of advanced methods to characterise the fracture behaviour of flexible bonded joints 

    Manterola Najera, Julen (Date of defense: 2020-07-16)

    Advanced joining technologies such as bonded joints play an important role to develop more efficient and durable structures. The present Thesis gives a step forward and proposes different solutions to characterise the ...

    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 ...

    Estudio de la influencia de los factores ambientales en el comportamiento de la unión adhesiva entre hormigón y barras FRP NSM 

    Duran Sureda, Imma (Date of defense: 2021-05-11)

    NSM strengthening technique under the influence of temperature and relative humidity, in which the interaction between materials involved is analyzed, is studied in this PhD. Therefore, this work is aimed at contributing ...

    Flexural behavior of NSM FRP strenthened reinforced concrete beams under sustained loading 

    Moawad, Mohamed Abdalla Mohamed Mohamed (Date of defense: 2020-07-30)

    The main objective of this work is to study the long-term and residual flexura! strength of Near Surface Mounted (NSM) strengthened Reinforced Concrete (RC) beams with Carbon Fiber Reinforced Polymers (CFRP) strips when ...

    A constitutive model for fatigue and residual strength predictions of composite laminates 

    Llobet Vallejo, Jordi (Date of defense: 2020-01-17)

    This thesis investigates the fatigue behaviour of fibre-reinforced composite laminates. Fatigue of composite materials is a complex subject both from an experimental and numerical modelling point of view. In this context, ...

    A comprehensive methodology to analyse bonded joints subjected to different environmental conditions 

    Abdel Monsef, Said Ahmed Ibrahim (Date of defense: 2020-07-02)

    Cohesive zone models are widely used for modelling delamination and bonded joints under different loading conditions. In the current thesis, an objective inverse method has been developed to extract the cohesive law from ...

    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 ...

    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 ...

    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 ...

    A mechano-perfusion bioreactor for tissue engineering 

    Fernandes Freitas, Dino Miguel (Date of defense: 2019-11-29)

    Tissue Engineering plays a vital role in tissue construct to repair, maintain or replace tissues. Those tissues can be cultivated in vivo or in vitro using devices such as bioreactors. There are several approaches to ...

    Development and characterization of thermoelectric generators for thermal energy recovery from reciprocating internal combustion engines 

    Comamala Laguna, Martí (Date of defense: 2019-07-31)

    Since the beginnings of the automotive driven with internal combustion engines all the cycles used in the alternative motors share a thermal characteristic, a large amount of heat released by the fuel is lost in the form ...

    Contribution to bioabsorbable stent manufacture with additive manufacturing technologies 

    Guerra Sánchez, Antonio (Date of defense: 2019-06-06)

    The main motivation of this work was to analyse the feasibility of the current stent’s manufacturing process to produce the new bioresorbable stents (BRS) as well as study new manufacturing methods. Fibre Laser Cutting ...

    Development of efficient testing methods and cohesive zone models for analyzing fatigue-driven delamination in 3D laminated composite structures 

    Carreras Blasco, Laura (Date of defense: 2019-07-17)

    The overall purpose of this Ph.D. thesis is to contribute to the reliable design of composite structures subjected to fatigue-driven delamination. The aim is motivated by a wish to reduce the amount of experimental testing ...

    Contributions to ultrasonic micro-moulding process of high performance polymers 

    Dorf, Tomasz (Date of defense: 2019-06-05)

    Polymeric materials, which are suitable for high performance applications for example human implants are one of the most expensive available polymers. Standard injection micromoulding process, dedicated for mass production, ...

    Analysis and development of experimental characterization methodologies of mode II fracture toughness on CFRP bonded joints 

    Pérez Galmés, Magdalena (Date of defense: 2018-07-27)

    Adhesives have been shown to be an excellent solution for joining fibre reinforced polymer (FRP) components thanks to their capacity to redistribute loads, reduces stress concentrations and contribute to overall weight ...