Now showing items 1-20 of 33

    • 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 ...
    • 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
    • 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
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      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
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      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 

      Silvestre Bergés, Santiago; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio (Universitat Politècnica de Catalunya, 2014-06-19)
      Exam
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    • Examen Final 

      Chávez Domínguez, Juan Antonio; Silvestre Bergés, Santiago (Universitat Politècnica de Catalunya, 2014-01-10)
      Exam
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    • 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
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    • Examen Final 

      Chávez Domínguez, Juan Antonio; Silvestre Bergés, Santiago (Universitat Politècnica de Catalunya, 2013-06-10)
      Exam
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    • Examen Final 

      Chávez Domínguez, Juan Antonio; García González, Miguel Ángel; Guede Fernández, Federico; López González, Juan Miguel; Ortega Villasclaras, Pablo Rafael; Pol Fernández, Clemente (Universitat Politècnica de Catalunya, 2020-06-12)
      Exam
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    • Examen LAB 

      Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio (Universitat Politècnica de Catalunya, 2021-06-18)
      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
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      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
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      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 ...