Listar Dpto. Ingeniería Mecánica, Energética y de Materiales - Mekanika, Energetika eta Materialen Ingeniaritza Saila por título
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ECAE, una tecnología de procesado emergente para producir propiedades relevantes en materiales metálicos
El objetivo del presente artículo es proyectar una visión de conjunto de la reciente técnica de procesado mecánico de materiales conocida como "extrusión en canal angular constante" (ECAE). Esta técnica es un método novedoso ... -
Effect of the temperature in the mechanical properties of austenite, ferrite and sigma phases of duplex stainless steels using hardness, microhardness and nanoindentation techniques
The aim of this work is to study the hardness of the ferrite, austenite and sigma phases of a UNS S32760 superduplex stainless steel submitted to different thermal treatments, thus leading to different percentages of the ... -
Environmental impact analysis of natural cork stopper manufacturing
For both wine makers and customers, natural cork stoppers are a symbol of quality. More-over, they are essential for maintaining the organoleptic properties of bottled wines throughout their lifespan. This research relied ... -
Estudio de la oxidación a elevada temperatura de ocho aleaciones en atmósferas de combustión de biomasa
La combustión de biomasa, especialmente de paja de cereal, genera un ambiente muy corrosivo, particularmente, cerca de los tubos sobrecalentadores. El cloro es el principal agente corrosivo en las plantas de biomasa. Este ... -
Estudio de una fundición de grafito laminar mediante mecánica de la fractura
Se estudia la tenacidad a la fractura de una fundición de grafito laminar con diferentes matrices y tamaños de celdilla eutéctica. También se estudian las propiedades de tracción, dureza y tenacidad al impacto. Los resultados ... -
Estudio de una fundición nodular mediante mecánica de la fractura
Se estudia la tenacidad a la fractura de fundiciones de grafito nodular con diferentes matrices y tamaños de celdilla eutéctica. También se estudian las propiedades de tracción, dureza y tenacidad al impacto. Los ... -
Estudio y optimización de los sistemas de intercambio de calor en generación termoeléctrica aplicada al aprovechamiento del calor residual
La presente tesis doctoral estudia el aprovechamiento del calor residual mediante generación termoeléctrica para la obtención de potencia eléctrica generada gracias al efecto Seebeck. Dos son las aproximaciones empleadas, ... -
Experimental and computational study on thermoelectric generators using thermosyphons with phase change as heat exchangers
An important issue in thermoelectric generators is the thermal design of the heat exchangers since it can improve their performance by increasing the heat absorbed or dissipated by the thermoelectric modules. Due to its ... -
Experimental bench for hemodynamic study of coronary artery with serial stenoses: fractional flow reserve assessment
The aim of this study was to develop an experimental hemodynamic bench to elucidate the influences of such geometrical parameters on the FFR assessment. As a first approach, the present work was focused on the influence ... -
Experimental investigation of the applicability of a thermoelectric generator to recover waste heat from a combustion chamber
A thermoelectric generator prototype has been built; it produces 21.56 W of net power, the produced thermoelectric power minus the consumption of the auxiliary equipment, using an area of 0.25 m2 (approximately 100 W/m2). ... -
Experimental modelling of critical damage obtained in Al-Mg and Al-Mn alloys for both annealed state and previously deformed by ECAP
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 ... -
Experimental study and optimization of thermoelectric-driven autonomous sensors for the chimney of a biomass power plant
In the work discussed in this paper a thermoelectric generator was developed to harness waste heat from the exhaust gas of a boiler in a biomass power plant and thus generate electric power to operate a flowmeter installed ... -
Improvement of a thermoelectric and vapour compression hybrid refrigerator
This paper presents the improvement in the performance of a domestic hybrid refrigerator that combines vapour compression technology for the cooler and freezer compartments, and thermoelectric technology for a new compartment. ... -
In vitro comparison of Günther Tulip and Celect filters. Testing filtering efficiency and pressure drop
In this study, the trapping ability of the Günther Tulip and Celect inferior vena cava filters was evaluated. Thrombus capture rates of the filters were tested in vitro in horizontal position with thrombus diameters of 3 ... -
Influence of a commercial antithrombotic filter on the caval blood flow during neutra and valsalva maneuver
Anticoagulants are the treatment of choice for pulmonary embolism. When these fail or are contraindicated, vena cava filters are effective devices for preventing clots from the legs from migrating to the lung. Many ... -
Influence of maintenance actions in the drying stage of a paper mill on CO2 emissions
Greenhouse gases from industrial activities have become a global problem. Emissions management is being developed to raise awareness of the importance of controlling pollution in general and atmospheric emissions in ... -
Influence of metallic die temperature in the solidification of Cu-10%Al-2%Fe alloy
The phases obtained in copper aluminium bronze alloy (Cu-Al10-Fe2) cast into a permanent die were investigated. The parameters examined were the pre-heating temperatures of the die and the graphite coating thickness. The ... -
Influence of the power supply on the energy efficiency of an alkaline water electrolyser
Electric energy consumption represents the greatest part of the cost of the hydrogen produced by water electrolysis. An effort is being carried out to reduce this electric consumption and improve the global efficiency ... -
Influencia de bajas cantidades de fase sigma en las propiedades mecánicas y en la resistencia a corrosión localizada en tubos de acero inoxidable dúplex UNS S32760
Los aceros inoxidables dúplex (DSS de sus siglas en inglés: Duplex Stainless Steels), que presentan una microestructura mixta con un porcentaje similar de fases ferrita (α) y austenita (γ), son susceptibles a la formación ... -
Influencia de la composición y el tratamiento térmico en las propiedades mecánicas de aleaciones de bronce al aluminio
Los cuproaluminios son aleaciones de cobre con contenidos de aluminio del 5-12 % que pueden incorporar hierro, níquel, y manganeso para formar una familia de aleaciones con unas excelentes propiedades de resistencia ...