Departament d'Enginyeria Mecànica i de la Construcció Industrial: Enviaments recents
Ara mostrant els elements 41-60 de 84
Advances in the modelling of thermoelectric energy harvesters in waste heat recovery applications
In this work, we investigate harvesting thermoelectric energy from wasted heat in fluid networks and propose a generic tool for the simulation and sizing of thermoelectric energy harvesters, that can be used in ...
Hygrothermal effects on CFRP: testing, analysis and structural optimization
In the common design and certification process, a large number of experimental tests, going from small specimens to the full structure, are performed. In these tests, the environmental conditions, especially temperature ...
Milling stability improvement through novel prediction and suppression techniques
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 ...
Improved delamination resistance of thin-ply based laminates: an experimental and numerical study
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 ...
Experimental characterization and numerical simulation of composite adhesive joints using the cohesive zone model approach
The present thesis aims at developing robust numerical and experimental methods for the simulation of composite adhesive joints. Firstly, a new method for the experimental characterization of adhesive joints is presented. ...
Contribución a la sostenibilidad en la edificación mediante el desarrollo de una metodología simplificada para el cálculo de la eficiencia energética y de sostenibilidad de una vivienda
El desarrollo de la sostenibilidad en la edificación ha realizado un gran avance en los últimos diez años, mejoras en la eficiencia energética de los edificios con la incorporación del certificado de eficiencia energética ...
Bond-slip and cracking behaviour of glass fibre reinforced polymer reinforced concrete tensile members
In this work, a methodology has been developed to implement the bond behaviour between concrete and GFRP bars in the numerical modelling. Based on experimental results and applying the inverse method, the bond law to be ...
Analysis and optimization of composite stringers
The use of the stiffened panels in the aircraft/aeronautical industry has been growing in the last decades. On the other hand, the exponential growth in the use of composite materials in the last years has had a ...
Desarrollo de un nuevo ensayo experimental para la evaluación de la calidad de uniones adhesivas entre componentes estructurales de composite para la indústria aeronáutica
El uso de los composites en la industria aeronáutica ha experimentado un fuerte crecimiento en los últimos años debido a la utilización de componentes de composite que realizan funciones estructurales. A menudo, para ...
Nominal strength and size effect of quasi-brittle structures with holes
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. ...
Experimental and analytical study of delamination caused by free-edges and matrix cracks in laminated composites
In the last decades, the use of laminated composites, such as Carbon Fiber Reinforce Polymer has increased in many industrial sectors. Different failure mechanisms different damage mechanism can appear in laminated ...
Designing, testing and modelling two innovative non-conventional buckling restrained braces for seismic resistant buildings
In this thesis two all-steel BRB have been designed, manufactured and tested, and both satisfy the testing protocols required by EU and US codes. They are composed of a steel slotted restraining unit which stabilizes the ...
Analysis of process-induced defects on steered-fiber panels for aeronautical applications
Currently, the use of Automated Fiber Placement technology allows, large composite aircraft components to be manufactured with high quality materials and introduce new laminate concepts. Among such concepts are the tow-steered ...
Effect of pre-bond moisture on the static and fatigue behaviour of bonded joints between CFRP laminates for structural repairs
In recent years, the use of composite materials in the aeronautic, automotive, marine construction, etc. has increased significantly. Hence, there is an increasing need for repair technologies on primary structural components, ...
Downward flame front spread in thin solid fuels: theory and experiments
Flame spread over solid samples has been studied from many points of view, as it is key for fire safety, yet it is a complex phenomenon that involves processes occurring in both the solid and the gas phases. This Ph.D. ...
Contribution to micro-milling process parameters selection for process planning operations
The development of new products with micro-metric characteristics and complex geometries has been a manufacturing trend in different industrial sectors, particularly for electronic, military, biomedical and aerospace ...
A study of the bond and flexural behaviour of reinforced concrete elements strengthened with near surface mounted (NSM) FRP reinforcement
The main objective of the thesis is to study the bond behaviour of NSM FRP reinforcement in concrete elements. With this aim an extensive program of experimental tests complemented with numerical analysis has been performed ...
Caracterização mecânica e biológica de scaffolds produzidos por BioCell Printing
This research work proposes a novel automated and integrated system for the production and in vitro culture of scaffolds, called BioCell Printing. The main goal of the present research work, besides the development of the ...
Contribution to laser milling process parameters selection for process planning operations
Nontraditional manufacturing processes (NTM) appeared to answer the growing demands of market productivity. Needs of higher quality products in less time and new demands such as new exotic work materials, innovative geometric ...
Contribución a la fundición selectiva por láser de pieza metálica mediante el estudio de propiedades mecánicas y de manufactura
Selective laser melting process is an additive manufacturing technique that allows obtaining, from a 3D model, a physical model through a layer-by-layer manufacturing strategy. Several machines are commercially available, ...
