Recursos de colección

Archivo Digital UPM (113.270 recursos)

This is an institutional repository providing access to the research output of the institution. Primarily contains thesis.

Tipo de documento = Ponencia en Congreso o Jornada

Mostrando recursos 1 - 12 de 12

  1. The Evolution and Development of Mechanical Engineering through large cultural areas

    Muñoz Sanz, José Luis; Bautista Paz, Emilio; Ceccarelli, Marco; Echávarri Otero, Javier; Lafont Morgado, Pilar; Diaz Lantada, Andres; Leal Wiña, María del Pilar; Lorenzo Yustos, Héctor; Muñoz Guijosa, Juan Manuel; Muñoz García, Julio
    Mechanical Engineering is probably the forerunner of many branches of Engineering and has persistently been their companion up to the present. For this reason, the History of Machines embraces a very broad period of the History of Mankind, and can be studied from many perspectives. This paper attempts to link progress in Mechanical Engineering to the great cultures that have arisen throughout the History of Mankind. This paper begins with the anonymous mechanical developments that appeared in Prehistory and opened up the way to the first civilisations, marked to a large extent, maybe, by Greco-Roman culture in Europe and by...

  2. Ayuda al aprendizaje: La inyectora virtual

    Rodríguez Villagrá, María; Martínez Muneta, María Luisa; Marquez Sevillano, Juan de Juanes; Carretero Díaz, Antonio María
    Esta comunicación se enmarca dentro de un proyecto para desarrollar una herramienta informática enfocada a mejorar la calidad de la enseñanza mediante técnicas de realidad virtual. Esta herramienta se presenta como complemento para ampliar y reforzar la gama de recursos que el alumno dispone para adquirir conocimientos prácticos en inyección de plásticos, y así poder utilizarlos con éxito en el marco del diseño, selección y parametrizacióndel proceso de inyección en la fabricación de piezas. El presente trabajo describe algunos aspectos sobre la aplicación desarrollada como resultado del proyecto de innovación educativa IE06 0525-049 financiado por la Universidad Politécnica de Madrid....

  3. Simulation of an Asynchronous Machine by using a Pseudo Bond Graph

    Romero Rey, Gregorio; Félez Mindán, Jesús; Maroto Ibáñez, Joaquín; Martínez Muneta, María Luisa
    For engineers, computer simulation is a basic tool since it enables them to understand how systems work without actually needing to see them. They can learn how they work in different circumstances and optimize their design with considerably less cost in terms of time and money than if they had to carry out tests on a physical system. However, if computer simulation is to be reliable it is essential for the simulation model to be validated. There is a wide range of commercial brands on the market offering products for electrical domain simulation (SPICE, Lab VIEW PSCAD, Dymola, Simulink,, Simplorer,...)....

  4. Simulation of the Hydraulic Circuit of a Wheel Loader by Using the Bond Graph Technique

    Romero Rey, Gregorio; Félez Mindán, Jesús; Martínez Muneta, María Luisa; Vas, Juan José del
    Hydraulic systems are widely used in Engineering because they are highly versatile and can be combined with other domains of physics (mechanics, electronics, etc.). For this reason, it is of vital importance to studyand develop them with a view to obtaining mechanical hydraulic systems that are increasingly efficient. The beginning of this paper briefly analyses the method usually used to perform simulation in the hydraulic domain. Subsequently, after performing an analysis of different Bond-Graph technique-based works, different characteristic elements will be individually analysed. Finally, the different elements analysed will be interconnected and a simulation of a hydraulic circuit. Will be...

  5. Scientific and Technological Issues on the Application of High Intensity Lasers to Material Properties Modification: The case of Laser Shock Processing of Metallic Alloys

    Ocaña Moreno, José Luis; Morales Furió, Miguel; Porro González, Juan Antonio; Molpeceres Álvarez, Carlos Luis; García Beltrán, Ángel
    Laser Shock Processing (LSP) has been practically demonstrated as a technique allowing the effective induction of residual stresses fields in metallic materials allowing a high degree of surface material protection. Experimental results obtained with commercial Q-switched lasers prove complete feasibility at laboratory scale. Depending on initial material mechanicla properties, the remaining residual stresses fields can can reach depths and maximun values providing an effectively enhanced behaviour of materials against fatigue crack propagation, abrasive wear, chemical corrosion and other failure conditions. This makes the technique specially suitable and competitive with presently use techniques for the treatment of heavy duty components in the...

  6. Predictive assessment of plasma dynamics effects on the shock transformation of metallic alloys by laser shock processing

    Ocaña Moreno, José Luis; Morales Furió, Miguel; Molpeceres Álvarez, Carlos Luis; Porro González, Juan Antonio; Iordachescu, Danut
    Laser shock processing (LSP) has been presented as an effective technology for improving surface mechanical and corrosion properties of metals, and is being developed as a practical process amenable to production engineering. The main acknowledged advantages of the laser shock processing technique consist on its capability of inducing a relatively deep compression residual stresses field into metallic alloy pieces allowing an improved mechanical behaviour, explicitly, the life improvement of the treated specimens against wear, crack growth and stress corrosion cracking. In the present paper, practical results at laboratory scale on the application of Laser Shock Processing are presented showing the...

  7. Sensitivity analysis of WRF for integrated assessment modelling in Spain

    Alexandrov, Vassil N.; Borge García, Rafael; Lumbreras Martin, Julio; Rodríguez Hurtado, María Encarnación
    SIMCA (Air quality integrated assessment modelling system for the Iberian Peninsula) is a research project funded by the Spanish Ministry of Environment. Assessment and comparison of environmental policies and control Strategies. Multiscale and multipollutant approach Based on national projections from the Spain’s Emission Projection (SEP) project.

  8. Diseño y desarrollo de un laboratorio virtual de aplicaciones industriales con láser

    Ocaña Moreno, José Luis; García Beltrán, Ángel; Molpeceres Álvarez, Carlos Luis; Morales Furió, Miguel; González González, José Manuel; Blasco Litago, Manuel
    El objetivo de este trabajo es el diseño y desarrollo de un laboratorio virtual de aplicaciones industriales de los láseres de potencia. La posibilidad de utilizar modelos de simulación con una determinada gestión del conocimiento para facilitar la realización de experimentos prácticos en asignaturas relacionadas con las aplicaciones industriales del láser, así como para el adiestramiento del cuadro técnico de estos sistemas puede ser muy ventajoso con vistas a la reducción del tiempo, recursos y coste del entrenamiento. Si estos modelos son accesibles a través de internet la ventaja se multiplica, ya que esta característica flexibiliza el procedimiento de aprendizaje...

  9. Methodology to quantify the effect of policies and measures in emission reductions from road transport

    Lumbreras Martin, Julio; Guijarro Lomeña, Alberto; López Martínez, José María; Rodríguez Hurtado, María Encarnación
    Atmospheric emissions from road transport have increased all around the world since 1990 more rapidly than from other pollution sources. Moreover, they contribute in more than 25% to total emissions, in the majority of European countries. This situation confirms the importance of road transport when complying with emission ceilings (e.g. Kyoto Protocol and National Emissions Ceilings Directive). The developed methodology illustrates the effect on transport emissions of the most influential variables and their relationships. Therefore, it would be a policy instrument to design emission reduction measures. Firstly, the influence of the main variables was studied: mileage or mobility (passengers or...

  10. Quantification of the effect of both technical and non-technical measures from road transport on Spain's emissions projections

    López Martínez, José María; Lumbreras Martin, Julio; Guijarro Lomeña, Alberto; Rodríguez Hurtado, María Encarnación
    Atmospheric emissions from road transport have increased all around the world since 1990 more rapidly than from other pollution sources. Moreover, they contribute to more than 25% of total emissions in the majority of the European Countries. This situation confirms the importance of road transport when complying with emission ceilings (e.g. Kyoto Protocol and National Emissions Ceilings Directive). A methodology has been developed to evaluate the effect of transport measures on atmospheric emissions (EmiTRANS). Its application to Spain in the horizon of 2020 allows the quantification of the effect of several measures on emission reductions. This quantification was done through...

  11. Optimization of interferometric photonic cells for biochemical sensing based on advanced high sensitivity optical techniques

    Casquel del Campo, Rafael; Holgado Bolaños, Miguel; Molpeceres Álvarez, Carlos Luis; Morales Furió, Miguel; Ocaña Moreno, José Luis
    The integration between micro-nano fluidics and optics is a new emerging research field, with promising high impact applications in the area of optical biosensing devices. This is the case of tunable Mach-Zehnder interferometers, photonic crystals and ring resonators, which have been demonstrated recently. Recent investigations1 have demonstrated that by combination of the simultaneous used of Ellipsometry, Reflectometry and Spectrometry based technologies broadly used in semiconductor industry at sub-micron spot-size level and advanced photonic structures, a relevant improvement can be achieved at the level of performance of the current state of the art for label-free biosensing and nano-fluidics metrology. The variation...

  12. Vertical resonant microcativites based on pillars analyzed by beam profile ellipsometry and reflectometry

    Casquel del Campo, Rafael; Holgado Bolaños, Miguel; Lavin Hueros, Alvaro; Angulo Barrios, Carlos; Molpeceres Álvarez, Carlos Luis; Morales Furió, Miguel; Ocaña Moreno, José Luis
    A biosensor design is presented by a combination of ellipsometry, reflectometry and spectrometry based techniques is presented. It consists of a lattice of columns forming resonant microcavities. Calculations for reflectivity profiles are shown, and estimations for detection limit in refractive index units are obtained.

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