Ara es mostren els items 6-25 de 31

    • La Babel de los sistemas de medida : la unificación del sistema de medida dimensional es imitado por la unificación del sistema monetario 

      Torrents Dolz, Josep M. (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2002)
      Article
      Accés obert
    • Compensation of impedance meters when using an external front-end amplifier 

      Torrents Dolz, Josep M.; Pallàs-Areny, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-04-30)
      Article
      Accés obert
      Four-terminal impedance meters based on pseudo-bridges yield unexpected uncertainties when using high-contact-impedance electrodes. Adding a front-end amplifier to the impedance meter and rearranging the connection of the ...
    • Conductive concrete made from recycled carbon fibres for self-heating and de-icing applications in urban furniture 

      Faneca Llesera, Gerard; Ikumi Montserrat, Tai; Torrents Dolz, Josep M.; Aguado de Cea, Antonio; Segura Pérez, Ignacio (Instituto Técnico de la Construcción y del Cemento, 2020-09)
      Article
      Accés obert
      This paper presents a broad experimental study performed at laboratory and industrial facilities to develop conductive concrete for self-heating and de-icing applications in urban furniture. Self-heating capacity is achieved ...
    • Desenvolupament de tècniques de mesura d'impedància elèctrica aplicada a la caracterització de sòls 

      Torrents Dolz, Josep M. (Universitat Politècnica de Catalunya, 1996-11-25)
      Tesi
      Accés obert
      La humitat és un dels paràmetres més característics del sòl i el seu coneixement té interès des de diversos àmbits de la enginyeria. Conèixer la humitat mitjançant la impedància elèctrica planteja un estudi acurat de les ...
    • Development of conductive cementitious materials using recycled carbon fibres 

      Faneca Llesera, Gerard; Segura Pérez, Ignacio; Torrents Dolz, Josep M.; Aguado de Cea, Antonio (2018-09)
      Article
      Accés obert
      Conductive cementitious materials have gained immense attention in recent years owing to the possibility of achieving multifunctional materials. The usual approach has been to incorporate carbonaceous nanomaterials and/or ...
    • Electrical impedance as a technique for civil engineer structures surveillance : considerations on the galvanic insulation of samples 

      Torrents Dolz, Josep M.; Juan Garcia, Pablo; Aguado de Cea, Antonio (Institute of Physics, 2007)
      Article
      Accés obert
      Since Electric Impedance Spectroscopy (EIS) has been widely used to determine physical properties of materials, it becomes necessary to evaluate different error contributions. In this work, it is studied the effect of the ...
    • Electrònica Naval 

      Torrents Dolz, Josep M. (Universitat Politècnica de Catalunya, 2022-06-14)
      Examen
      Accés restringit a la comunitat UPC
    • Error analysis in two-terminal impedance measurements with residual correction 

      Torrents Dolz, Josep M.; Pallàs-Areny, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-10-31)
      Article
      Accés obert
      Residual impedance correction in impedance analyzers when using an asymmetrical test fixture needs three reference measurements, usually open circuit, short circuit, and load (meaning an impedance close to the impedance ...
    • Evaluation of conductive concrete made with steel slag aggregates 

      Santillán Alarcón, Ninel Estefanía; Speranza, Santiago; Torrents Dolz, Josep M.; Segura Pérez, Ignacio (2022-12)
      Article
      Accés obert
      The incorporation of black steel slag (waste from steel production) in concrete responds to a greater awareness of sustainability. In addition, it is capable of increasing electrical conductivity. The objective of this ...
    • Examen Electrònica Naval 

      Torrents Dolz, Josep M. (Universitat Politècnica de Catalunya, 2023-06-14)
      Examen
      Accés restringit a la comunitat UPC
    • Examen final 

      Torrents Dolz, Josep M. (Universitat Politècnica de Catalunya, 2021-06-17)
      Examen
      Accés restringit a la comunitat UPC
    • Examen final 

      Torrents Dolz, Josep M. (Universitat Politècnica de Catalunya, 2019-06-12)
      Examen
      Accés restringit a la comunitat UPC
    • Examen final 

      Torrents Dolz, Josep M.; Pol Fernández, Clemente; Ros Costals, Eloi (Universitat Politècnica de Catalunya, 2021-06-15)
      Examen
      Accés restringit a la comunitat UPC
    • Improved assessment of fibre content and orientation with inductive method in SFRC 

      Pialarissi Cavalaro, Sergio Henrique; López Carreño, Rubén-Daniel; Torrents Dolz, Josep M.; Aguado de Cea, Antonio (2015-06)
      Article
      Accés obert
      The inductive method is a robust and simple non-destructive test to assess the content and the distribution of steel fibres in FRC. Despite the advantages in comparison with other methods, further studies are still needed ...
    • Inductive method for assessing the amount and orientation of steel fibers in concrete 

      Torrents Dolz, Josep M.; Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Aguado de Cea, Antonio; Juan Garcia, Pablo; Sánchez-Moragues, Miguel Ángel (2012-04-24)
      Article
      Accés restringit per política de l'editorial
      Steel fibers are ferromagnetic and they have the property of altering the magnetic field around them. This paper discusses a method and gives a practical example to measure, non-destructively, the amount and orientation ...
    • Influence of fiber properties on the inductive method for the steel-fiber-reinforced concrete characterization 

      Juan-García, Pablo; Torrents Dolz, Josep M.; López Carreño, Rubén-Daniel; Pialarissi Cavalaro, Sergio Henrique (2016-08-01)
      Article
      Accés obert
      The inductive method has shown to be a good method for the estimation of fiber dosage in steel-fiber-reinforced concrete. The current formulations reported a strong correlation between inductance and fiber content, as well ...
    • Measurement of moisture in mortar using a coplanar waveguide 

      Juan Garcia, Pablo; Torrents Dolz, Josep M. (2009)
      Text en actes de congrés
      Accés obert
      Increasingly more non-destructive testing methods are being developed in a civil engineering context, but many of them cannot be applied when only one surface of the structure can be accessed. In order to measure moisture ...
    • Measurement of mortar permittivity during setting using a coplanar waveguide 

      Juan Garcia, Pablo; Torrents Dolz, Josep M. (2010-03)
      Article
      Accés obert
      A sensor based on a coplanar waveguide structure was designed to perform non-destructive tests for material characterization in which the measurement can be done only on one side of the sample. The measurements were compared ...
    • Method for forming a magnec field of arbitrary shape from an established template 

      Torrents Dolz, Josep M.; Juan García, Pablo; Sánchez Moragues, Miguel Ángel (Universitat Politècnica de Catalunya (UPC), 2013)
      Text en actes de congrés
      Accés obert
      A strategy to design a particular form of magnetic field along an axis from a coaxial inductor is described. The procedure is illustrated with the design of a constant magnetic field inside a cubic inductor. It validates ...
    • Method for forming a magnetic field of arbitrary shape from an established template 

      Torrents Dolz, Josep M.; Juan García, Pablo; Sánchez Moragues, Miguel Ángel (Universitat Politècnica de Catalunya (UPC), 2013)
      Text en actes de congrés
      Accés obert
      A strategy to design a particular form of magnetic field along an axis from a coaxial inductor is described. The procedure is illustrated with the design of a constant magnetic field inside a cubic inductor. It validates ...