Now showing items 1-20 of 30

  • Adaptación de una asignatura de electronica digital a la semipresencialidad y al Espacio Europeo de Educación Superior 

    Bermejo Broto, Sandra; Chávez Domínguez, Juan Antonio; Domínguez Pumar, Manuel; Pons Nin, Joan (2010)
    Conference report
    Open Access
    Este trabajo describe y analiza la evolución del formato semipresencial de la asignatura Sistemas Digitales 1, inicialmente impartida dentro de una titulación de segundo ciclo y actualmente adaptada al EEES e impartida ...
  • Análisis de masas alimenticias mediante sensores electrónicos de ultrasonido: aplicación al estudio de masas de cereales 

    García Álvarez, Víctor Óscar; Gomez, M.; Rosell, C. M.; Turó Peroy, Antonio; Chávez Domínguez, Juan Antonio; García Hernández, Miguel J.; Salazar Soler, Jorge (2010-03)
    Article
    Open Access
  • A novel distributed fiber-optic strain sensor 

    García Hernández, Miguel J.; Ortega Redondo, Juan Antonio; Chávez Domínguez, Juan Antonio; Salazar Soler, Jorge; Turó Peroy, Antonio (2002-08)
    Article
    Restricted access - publisher's policy
    The theory of operation of a fiber-optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to ...
  • Characterization of nonhomogeneity in the dispersive properties of the materials used in pipes 

    Millán Blasco, Oliver; Salazar Soler, Jorge; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This article is focused on the characterization of the lack of homogeneity in the dispersive acoustic properties of polymeric materials used in industrial pipes. Usually, the parameter of interest associated to dispersion ...
  • Comparison between sine wave fitting and zero- crossing methods applied to QCM impedance measurements 

    Chávez Domínguez, Juan Antonio; García Hernández, Miguel J.; Millán Blasco, Oliver; Tur Gaspar, Ignasi; Turó Peroy, Antonio; Amer, Miquel Àngel; Salazar Soler, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This paper presents a comparison between two algorithms for sinusoidal signal characterization applied to QCM impedance measurements. These algorithms are the zero crossing and peak detection method and the 7 parameters ...
  • Control de calidad en la industria de la automoción 

    Chávez Domínguez, Juan Antonio; Bosch Tous, Jordi; García Hernández, Miguel (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1996)
    Article
    Open Access
  • Design and implementation of an ultrasonic sensor for rapid monitoring of industrial malolactic fermentation of wines 

    Celik, Dervis; Amer Boixareu, Miguel Ángel; Novoa Díaz, Daniel F.; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J.; Salazar Soler, Jorge (2017-12-19)
    Article
    Open Access
    Ultrasound is an emerging technology that can be applied to monitor food processes. However, ultrasonic techniques are usually limited to research activities within a laboratory environment and they are not extensively ...
  • Effect of angle errors in conical tip buffer rods 

    García Álvarez, Javier; García Hernández, Miguel J.; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; Salazar Soler, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Conference report
    Restricted access - publisher's policy
    Buffer rods are usually plastic or metallic solid cylinders of known acoustic properties, which are placed between the ultrasonic transducer and the sample under study. For some applications, the buffer rod end in contact ...
  • Espectrometría infrarroja con array de fotodetectores 

    Chávez Domínguez, Juan Antonio; Ortega Redondo, Juan Antonio; Alba, Jessica; García, M. (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1995)
    Article
    Open Access
  • Examen Final 

    Chávez Domínguez, Juan Antonio; García González, Miguel Ángel; López, J. M.; Ortega Villasclaras, Pablo Rafael; Pol Fernández, Clemente; Turó Peroy, Antonio (Universitat Politècnica de Catalunya, 2018-06-15)
    Exam
    Restricted access to the UPC academic community
  • Examen Final 

    Chávez Domínguez, Juan Antonio; Silvestre Bergés, Santiago (Universitat Politècnica de Catalunya, 2013-06-10)
    Exam
    Restricted access to the UPC academic community
  • Examen Final 

    Chávez Domínguez, Juan Antonio; Silvestre Bergés, Santiago (Universitat Politècnica de Catalunya, 2014-01-10)
    Exam
    Restricted access to the UPC academic community
  • Examen Final 

    Silvestre Bergés, Santiago; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio (Universitat Politècnica de Catalunya, 2014-06-19)
    Exam
    Restricted access to the UPC academic community
  • Guided wave sensing in a carbon steel pipe using a laser vibrometer system 

    Ruiz Toledo, Abelardo; Salazar Soler, Jorge; Chávez Domínguez, Juan Antonio; García Hernández, Miguel J.; Turó Peroy, Antonio (American Institute of Physics (AIP), 2010)
    Conference report
    Restricted access - publisher's policy
    Non-Destructive Evaluation (NDE) techniques have achieved a great development during the last decades as a valuable tool for material characterization, manufacturing control and structural integrity tests. Among these ...
  • High voltage pulser for NDE air-coupled lamb wave ultrasonic system 

    García Rodríguez, Mercedes; Arjones, V.; Yañez, Y.; García Hernández, Miguel J.; Salazar Soler, Jorge; Turó Peroy, Antonio; Chávez Domínguez, Juan Antonio (American Institute of Physics (AIP), 2010)
    Conference report
    Restricted access - publisher's policy
    This paper describes a high voltage pulser developed for an air-coupled ultrasonic array NDE system based on Lamb waves. Unlike the classical single pulse excitation circuits, this pulser is able to generate a bipolar ...
  • Influence on the accuracy of clamp-on ultrasonic flowmeters due to the recombination of multiple propagation paths 

    Millán Blasco, Oliver; Salazar Soler, Jorge; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    Clamp-on ultrasonic flowmeters geometry includes four different materials in the ultrasound propagation path: wedge, coupling material, pipe and liquid. In this case, oblique incidence ultrasonic beam generated by the ...
  • Laser interferometric measurements of air-coupled lamb waves 

    García Rodríguez, Mercedes; Yañez, Y.; García Hernández, Miguel J.; Salazar Soler, Jorge; Turó Peroy, Antonio; Chávez Domínguez, Juan Antonio (American Institute of Physics (AIP), 2010)
    Conference report
    Restricted access - author's decision
    In this paper, experimental measurements of the vibration pattern that results when an air-coupled A0 Lamb wave mode propagates in a plate are presented. Lamb waves are generated using an air-coupled piezoelectric transducer ...
  • Linearity error in Clamp-on ultrasonic flowmeters due to the installation on pipes made of dispersive materials 

    Millán Blasco, Oliver; Salazar Soler, Jorge; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    This article analyses and explains the implications that dispersive materials have over the linearity in flow measurement when a Clamp-on ultrasonic flowmeter is used. This is of capital importance because dispersive ...
  • MEMS technologies for energy harvesting 

    Domínguez Pumar, Manuel; Pons Nin, Joan; Chávez Domínguez, Juan Antonio (Springer, 2016-11-11)
    Part of book or chapter of book
    Open Access
    The objective of this chapter is to introduce the technology of Microelectromechanical Systems, MEMS, and their application to emerging energy harvesting devices. The chapter begins with a general introduction to the most ...
  • Monitorización del proceso de fermentación maloláctica en el vino tinto mediante propagación de ondas de ultrasonido 

    Novoa Díaz, Daniel F.; Puig-Pujol, A.; Rodríguez Nogales, J. M.; Fernández Fernández, E.; Vila Crespo, J.; Capdevila, F; Amer, M.A.; García Álvarez, Víctor Óscar; Chávez Domínguez, Juan Antonio; García Hernández, Miguel J.; Turó Peroy, Antonio; Salazar Soler, Jorge (AMV, 2013)
    Conference report
    Restricted access - publisher's policy
    La acción de las bacterias fácticas, durante la fermentación maloláctica (FML) del vino tinto, tiene como principal finalidad la reducción del nivel de concentración del ácido málico al tiempo que se va incrementando el ...