Browsing DoktoregoTesiak-Ingeniaritza by Issue Date
Now showing items 21-40 of 170
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Desarrollo de procesos de hidroconformado de chapa de aleaciones de aluminio a temperaturas moderadas
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)This research work is based on two strategic lines at medium and long term: the use of lightweight materials and the development of innovative processes that improve the forming of these materials. In this thesis, within ... -
Impacto del programa agenda en el caso de las empresas industriales de las comarcas del Deba y del Urola. Propuesta de un modelo estratégico para la innovación
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)This research has been developed with the clear objective of contributing to the knowledge of a close reality, as well as to contribute to its improvement. To do this, a thorough analysis of the innovative situation of ... -
Series connection of power semiconductors for medium voltage applications
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)The series connection of power semiconductor devices allows the operation at voltage levels higher than the levels allowed by one single semiconductor. However, due to individual parameter differences of the series connected ... -
Temperature dependent high strain rate deformation mechanisms in AZ31B MG alloy and coupled numerical modeling of electromagnetic forming process
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)En la presente tesis doctoral se estudia la deformación de la aleación de magnesio AZ31B a altas velocidades de deformación y diferentes temperaturas. En un primer apartado, se ha caracterizado el comportamiento mecánico ... -
Investigación en el método de gestión de entornos multiproyecto "Cadena crítica"
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)The aim of this thesis is to look deeply into the mechanisms related to Critical Chain Project Management and its implementation in companies that perform in multiproject environments. Even if problems related to this kind ... -
Estudio sobre la primera fase del proceso de desarrollo de nuevos productos o Fuzzy front end de la innovación: propuesta de un modelo y análisis de uso de herramientas, métodos y técnicas
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)This doctoral thesis deals with the first stage of New Product Development Process, also known as the Fuzzy Front End of innovation, and analyses two specific aspects related to this stage. On the one hand, this research ... -
Relationship between Solidification, Microstructures and Mechanical Properties of Magnesium Cast Alloys
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)This thesis analyses the solidification, the microstructure and the mechanical properties of several magnesium alloys. The objective is to establish correlations between them in order to predict the local mechanical ... -
Desarrollo y análisis numérico y experimental de la tecnología de hidroconformado de tubo en caliente de la aleacion de magnesio ZM21
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2009)Due to the evolution of the last decades actual society is not focused exclusively in production anymore and people, safety and the environment preservation have become necessary issues in any aspect of the everyday living. ... -
Desarrollo y caracterización de materiales compuestos reforzados con aleaciones con memoria de forma para la mejora del comportamiento ante impacto
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2010)In this thesis it has been investigated the effectiveness of using shape memory alloys to improve the performance of composite materials under impact loads. This task has been carried out on two fronts, the understanding ... -
Diseño, construcción y validación de una columna termogravitacional para bajas y altas presiones
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2010)In this thesis the study of thermogravitational effect at high-pressure and free media has been developed, with which the thermo-hydrodynamic behavior and the experimental determination of transport properties can be deepen, ... -
Learning frequent behaviours of the users in intelligent environments
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2010)Intelligent Environments (IEs) are expected to support people in their daily lives. One of the hidden assumptions in IEs is that they propose a change ofu perspective in the relationships between humans and technology, ... -
Detection and decoding algorithms of multi-antenna diversity techniques for terrestrial DVB systems
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2010)This PhD dissertation analyzes the behavior of multi-antenna diversity techniques in broadcasting scenarios of TDT (terrestrial digital television) systems and proposes a low-complexity detection and decoding design for ... -
Energy transmission and grid integration of AC offshore wind farms
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)The best places to build a wind farm in land are in use, due to the spectacular growth of the wind power over the last decade. In this scenario offshore wind energy is a promising application of wind power, particularly ... -
Metodología de aplicación de la optimización para el aumento de la eficiencia energética en las redes de distribución de baja tensión
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)Energy Efficiency (EE) in the electricity sector is a top priority in the international agenda in order to reduce energy consumption and address climate change. The application of optimization tools in this sector may ... -
Integration of distributed generation using energy storage systems
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)New challenges in grid reliability are coming up with the increasing penetration of renewable energies and distributed generation (DG). The use of Energy Storage Systems (ESS) is proposed in this thesis as solution for ... -
Geometrical accuracy improvement in flexible roll forming process by means of local heating
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)In the last decade the tendency to reduce vehicle weight due to rising fuel prices and environmental requirements, have pushed two main trends of research in the field of vehicle structure manufacturing. On the one hand, ... -
Experimental and numerical dynamic analysis of press-formeda viscoelastic sanwich structures
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)This dissertation presents the experimental and numerical dynamic analysis of press-formed viscoelastic sandwich structures composed by two thin metallic face layers and a constrained viscoelastic film. Such structures can ... -
Design and implimentationof Multi-user MIMO precoding algorithms
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)The demand for high-speed communications required by cutting-edge applications has put a strain on the already saturated wireless spectrum. The incorporation of antenna arrays at both ends of the communication link has ... -
Mikrofresaketa prozesuaren fidagarritasuna mugatzen duten aldagaien azterketa teoriko-praktikoa
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)The micromachining process, the same as any other industrial process, must offer high reliability so that it can be integrated in the manufacturing industry. In order to ensure their reliability, machining processes like ... -
Warm tube hydroforming of 6082 aluminium alloy
(Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)Nowadays, the requirements demanded to many of the parts used in such industries as the aeronautic or the automotive industry are increasingly higher: more complex shapes, previously unimaginable, lower and lower radii, ...
