Exploració per autor "Chávez Domínguez, Juan Antonio"
Ara es mostren els items 9-28 de 42
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Effect of angle errors in conical tip buffer rods
(Institute of Electrical and Electronics Engineers (IEEE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialBuffer 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
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1995)
Article
Accés obert -
Examen Final
(Universitat Politècnica de Catalunya, 2020-06-12)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2013-06-10)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2020-06-12)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2014-01-10)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2018-06-15)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2023-06-06)
Examen
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Examen Final
(Universitat Politècnica de Catalunya, 2014-06-19)
Examen
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EXAMEN FINAL
(Universitat Politècnica de Catalunya, 2022-05-31)
Examen
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EXAMEN FINAL
(Universitat Politècnica de Catalunya, 2022-06-01)
Examen
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Examen Lab
(Universitat Politècnica de Catalunya, 2023-06-02)
Examen
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Examen LAB
(Universitat Politècnica de Catalunya, 2021-06-18)
Examen
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Examen Laboratori
(Universitat Politècnica de Catalunya, 2021-06-01)
Examen
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Guided wave sensing in a carbon steel pipe using a laser vibrometer system
(American Institute of Physics (AIP), 2010)
Text en actes de congrés
Accés restringit per política de l'editorialNon-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
(American Institute of Physics (AIP), 2010)
Text en actes de congrés
Accés restringit per política de l'editorialThis 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 ... -
Impact of the pandemic on the teaching and research staff at a technological university in Spain: deepening the gender gap
(2022-05-25)
Article
Accés obertThe alteration of the educational model caused by the COVID-19 pandemic has not affected all university faculty equally. This work explores the academic, digital and gender inequalities caused by the pandemic on the teaching ... -
Influence on the accuracy of clamp-on ultrasonic flowmeters due to the recombination of multiple propagation paths
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialClamp-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
(American Institute of Physics (AIP), 2010)
Text en actes de congrés
Accés restringit per decisió de l'autorIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés obertThis 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 ...
