Now showing items 1-10 of 10

    • Analytical modelling of energy density and optimization of the EDM machining parameters of Inconel 600 

      Torres Salcedo, Alexia Upna; Puertas Arbizu, Ignacio Upna; Luis Pérez, Carmelo Upna (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      In this present research work, a new modelling of energy density in EDM (Electrical Discharge Machining) is proposed. Energy density can be defined as the amount of energy needed to get a unit volume of material removed, ...
    • Desarrollo de un plan de gestión sostenible de pastos comunales a escala municipal 

      Menéndez Artime, I.; Vázquez Fernández, I.; Busqué Marcos, J.; Bayarri García, E. (Sociedad Española para el Estudio de los Pastos, 2012)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Se presentan las bases metodológicas y los primeros resultados de un Plan de Gestión de Pastos Comunales desarrollado en el municipio de Rionansa (Cantabria). El Plan integra diversas fuentes de datos: una cartografía ...
    • Development of a graphical user interface tool for modelling and simulation of photovoltaic modules 

      Lizarrondo Ostiz, Julen (2015)   Proyecto Fin de Carrera / Ikasketen Amaierako Proiektua  OpenAccess
      The aim of this work is to develop a mathematical program to model and simulate photovoltaic modules. The tool will be provided with a graphical interface allowing the usage by users with little knowledge and without having ...
    • Evaluation of 2D models for the prediction of surface depression storage using realistic reference values 

      Giménez Díaz, Rafael Upna; Mezkiritz Barberena, Irantzu; Campo-Bescós, Miguel Upna; Álvarez-Mozos, Jesús Upna; González-Audicana, María Upna; Martínez de Aguirre Escobar, Alejandro Upna; Casalí Sarasíbar, Javier Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      Depression storage (DS) is the maximum storage of precipitation and runoff in the soil surface at a given slope. The DS is determined by soil roughness that in agricultural soils is largely affected by tillage. The direct ...
    • Experimental modelling of critical damage obtained in Al-Mg and Al-Mn alloys for both annealed state and previously deformed by ECAP 

      Luri Irigoyen, Rodrigo Upna; Fuertes Bonel, Juan Pablo Upna; Luis Pérez, Carmelo Upna; Salcedo Pérez, Daniel Upna; Puertas Arbizu, Ignacio Upna; León Iriarte, Javier Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Assessing the damage produced in plastic deformation processes permits the optimum manner to shape a material that could avoid any cracks from appearing. In this present research work, the absolute critical damage in ...
    • Modelling and simulation research on the metal structure of bridge cranes 

      Izurriaga Lerga, Javier (2011)   Proyecto Fin de Carrera / Ikasketen Amaierako Proiektua  OpenAccess
      The carrying metal construction is the most metal-intensive part of overhead cranes and is often subject to optimization and mass reduction. The objective of this project is to reduce the structural mass of a real-world ...
    • A proposal of a constitutive description for aluminium alloys in both cold and hot working 

      León Iriarte, Javier Upna; Luis Pérez, Carmelo Upna; Fuertes Bonel, Juan Pablo Upna; Puertas Arbizu, Ignacio Upna; Luri Irigoyen, Rodrigo Upna; Salcedo Pérez, Daniel Upna (MDPI, 2016)   Artículo / Artikulua  OpenAccess
      The most important difficulties when the behaviour of a part that is subjected to external mechanical forces is simulated deal with the determination of both the material thermo-mechanical properties and its boundary ...
    • Simulación y procesado de aleaciones de aluminio mediante estirado en canal angular constante (ECAD) 

      Luis Pérez, Carmelo Upna; Garcés, Y. Upna (CENIM, 2002)   Artículo / Artikulua  OpenAccess
      En este trabajo se estudia el proceso denominado ECAD (Equal Channel Angular Drawing) que consiste en hacer atravesar un material a través de una matriz de sección transversal constante, que presenta un ángulo comprendido, ...
    • Supercapacitors: electrical characteristics, modelling, applications and future trends 

      Berrueta Irigoyen, Alberto; Ursúa Rubio, Alfredo Upna; San Martín Biurrun, Idoia Upna; Eftekhari, Ali; Sanchis Gúrpide, Pablo Upna (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Energy storage systems are playing an increasingly important role in a variety of applications, such as electric vehicles or grid-connected systems. In this context, supercapacitors (SCs) are gaining ground due to their ...
    • Tools for the high penetration of PV systems in the EU electrical networks: results of PVCROPS Project 

      Narvarte Fernández, Luis; Marroyo Palomo, Luis Upna; Collares Pereira, Manuel; Tyutyundzhiev, Nicolay; Conlon, Michael; Bouzzan, N.; Guelbenzu Michelena, Eugenio; González, R.; Desportes, Adrien; Simmonds, Gary; Wilkin, Benjamin (EU PVSEC, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The Solar Energy Industrial Initiative established the objective of integrating PV into the grid to provide up to 12% of the EU electricity demand. The FP7 project PVCROPS has developed solutions to allow the high penetration ...