Now showing items 21-32 of 32

  • Polyetherimide foams filled with low content of graphene nanoplatelets prepared by scCO2 dissolution 

    Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-13)
    Article
    Open Access
    Polyetherimide (PEI) foams with graphene nanoplatelets (GnP) were prepared by supercritical carbon dioxide (scCO2) dissolution. Foam precursors were prepared by melt-mixing PEI with variable amounts of ultrasonicated GnP ...
  • Preparation of Metal Nanoparticles via Sonochemical Reduction 

    Saura Puig, Oriol (Universitat Politècnica de Catalunya / Univerza Mariboru, 2011)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Pure nickel, copper and zinc nanoparticles were prepared from chlorides of these elements using ultrasound with three different reducing agents (zinc, aluminum and magnesium). In the second part, syntheses of nickel-copper ...
  • Processing of Acousto-Ultrasonic Data for analysis of temperature parameters and damage detection in CFRP Structures 

    Moix-Bonet, Maria (Universitat Politècnica de Catalunya / Universität des Saarlandes, 2011)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    The aim of this work is to study the damage detection capability by means of Lamb wave propagation in a CFRP omega-stringer stiffened panel in presence of changing environmental conditions. Temperature influence in Lamb ...
  • Sistema de mesura on-line ultrasònic de la fermentació malolàctica en vins 

    Solé Sánchez, Víctor (Universitat Politècnica de Catalunya, 2016)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
  • Study of the existing non-destructive testing techniques and their implementation in state-of-the-art prototypes for sewer inspection 

    Casanovas Coma, Oriol; Francès Martí, Ricard (King's College London, 2006)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
  • Temperature compensation of ultrasonic velocity during the malolactic fermentation process 

    Amer, Miquel Àngel; Novoa Díaz, Daniel F.; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J.; Salazar Soler, Jorge (2015-11-04)
    Article
    Open Access
    Ultrasonic properties of materials present a strong dependence on temperature and in turn the ultrasonic velocity of propagation in the material under test. It is precisely for this reason that most ultrasonic measurements ...
  • The study and design of an Ink meter for printers 

    Farré Bravo, Joan (Universitat Politècnica de Catalunya, 2019-07)
    Master thesis
    Restricted access - confidentiality agreement
  • Ultrasonic Data Acquisition System: development of a Graphical User Interface 

    Rovira Ricard, Eric (Universitat Politècnica de Catalunya, 2013-08)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Covenantee:  Illinois Institute of Technology
    [ANGLÈS] Ultrasonic systems are widely used in industrial and medical imaging applications for diagnosis, nondestructive evaluation (NDE), defect recognition and classification. These applications require large amounts of ...
  • Ultrasonic monitoring of malolactic fermentation in red wines 

    Novoa Díaz, Daniel F.; Rodríguez Nogales, J. M.; Fernández Fernández, E.; Vila Crespo, J.; García Álvarez, Víctor Óscar; Amer, M.A.; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J.; Salazar Soler, Jorge (2014-08-01)
    Article
    Restricted access - publisher's policy
    The progress of malolactic fermentation in red wines has been monitored by using ultrasonic techniques. The evolution of ultrasonic velocity of a tone burst 1 MHz longitudinal wave was measured, analyzed and compared to ...
  • Ultrasonic thickness gauge for pipes 

    Farré Bravo, Joan (Universitat Politècnica de Catalunya, 2017-10)
    Bachelor thesis
    Open Access
    This thesis is about the development and implementation of a prototype for an ultrasonic thickness gauge for plastic and metallic pipes. It starts with a theoretical basis about ultrasounds and the non-destructive tests ...
  • Ultrasonic velocity of water-ethanol-malic acid-lactic acid mixtures during the malolactic fermentation process 

    Amer, M.A.; Novoa Díaz, Daniel F.; Puig-Pujol, A.; Capdevila, Josefina; Chávez Domínguez, Juan Antonio; Turó Peroy, Antonio; García Hernández, Miguel J.; Salazar Soler, Jorge (Elsevier, 2015-03)
    Article
    Open Access
    During malolactic fermentation in wines, malic acid is transformed into lactic acid by the action of lactic acid bacteria. This process can be monitored on-line by measuring the velocity of a low intensity ultrasonic wave ...
  • Ultrasound transmission method to assess raw earthen materials 

    Bernat Masó, Ernest; Ivanova Teneva, Elitsa; Escrig Pérez, Christian; Gil Espert, Lluís (2017-12-15)
    Article
    Restricted access - publisher's policy
    The feasibility of using ultrasound transmission method to assess raw earthen materials is investigated. Results indicate that this technique is effective at controlling the drying process of raw earthen materials. Near ...