Now showing items 1-20 of 29

  • A hybrid mixed double-sided incremental forming method for forming Ti6Al4V alloy 

    Valoppi, Beatrice; Sánchez Egea, Antonio José; Zhang, Zixuan; González Rojas, Hernan Alberto; Ghiotti, Andrea; Bruschi, Stefania; Cao, Jian (2016-05-12)
    Article
    Restricted access - publisher's policy
    Incremental forming can be an alternative manufacturing means in producing biomedical parts characterized by the need of patient-specific geometry. A novel hybrid dieless sheet metal forming process, electrically-assisted ...
  • An ultra-fast annealing treatment by electropulsing during pure copper wire drawing 

    González Rojas, Hernan Alberto; Sánchez Egea, Antonio José; Hameed, Saqib; Bolmaro, Raúl (Multidisciplinary Digital Publishing Institute (MDPI), 2019-11-23)
    Article
    Open Access
    The influence of electropulses in situ on the drawing process of copper wires was investigated with the aim of avoiding time consuming annealing thermal treatments. It was found that with the application of electropulses, ...
  • Bottoming bending process assisted by electroplasticity 

    Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Celentano, Diego Javier; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi (EUETIB, 2013-12)
    Conference report
    Open Access
    Este estudio reporta la influencia de los efectos atérmicos de la electroplasticidad en el proceso de doblado por estampa. Se fabrica un generador que generar pulsos de 300A y un ancho de 50μs. Los materiales estudiados ...
  • Caracterización de la placa de una herramienta de bruñido con bola asistida por una vibración ultrasónica 

    Gómez Gras, Giovanni; González Rojas, Hernan Alberto; Travieso Rodriguez, Jose Antonio; Nápoles Alberro, Amelia; Sánchez Egea, Antonio José (Publicacions de la Universitat Jaume I (UJI), 2012)
    Conference lecture
    Open Access
    En la industrial actual existen una gran cantidad de componentes mecánicos de máquinas-herramienta, automóviles, aviones, trenes, barcos, moldes, matrices de conformación, y muchas otras piezas; que deben tener una buena ...
  • Comparativa del proceso de bruñido con bola en máquinas de 3 y 5 ejes en piezas de aluminio A92017 y A 96351 

    Travieso Rodriguez, Jose Antonio; Sánchez Egea, Antonio José; Nápoles Alberro, Amelia; Huertas Talón, José Luis; Gómez Gras, Giovanni; González Rojas, Hernan Alberto (Publicacions de la Universitat Jaume I (UJI), 2012)
    Conference lecture
    Open Access
  • Current-induced ductility enhancement of a Magnesium alloy AZ31 in uniaxial micro-tension below 373 K 

    Sánchez Egea, Antonio José (Multidisciplinary Digital Publishing Institute (MDPI), 2018-12-31)
    Article
    Open Access
    The size effects in metal forming have been found to be crucial in micro-scale plastic deformation or micro-forming processes, which lead to attenuation of the material’s formability due to the increasing heterogeneity of ...
  • Differential diagnosis between Parkinson's disease and essential tremor using the smartphone's accelerometer 

    Barrantes, Sergi; Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Martí Domènech, Maria Josefa; Compta, Yaroslau; Valldeoriola Serra, Francesc; Simó Mezquita, Ester; Tolosa Sarró, Eduardo; Valls Solé, Josep (2017-08-25)
    Article
    Open Access
    Background: The differential diagnosis between patients with essential tremor (ET) and those with Parkinson’s disease (PD) whose main manifestation is tremor may be difficult unless using complex neuroimaging techniques ...
  • Effect of electroplastic cutting on the manufacturing process and surface properties 

    Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Montilla Montaña, Carlos A.; Kallewaard, Valentina (2015-03-13)
    Article
    Restricted access - publisher's policy
    This article reports on a novel machining process technique: in situ electrically-assisted turning process based on the influence of electropulsing. A self-made generator was used to induce a current intensity of 90 A, a ...
  • Electroplastic cutting influence on power consumption during drilling process 

    Hameed, Saqib; González Rojas, Hernan Alberto; Sánchez Egea, Antonio José; Nápoles Alberro, Amelia (2016-03-12)
    Article
    Open Access
    The aim of this study is to report the use of non-conventional material removal process technique. It was found that electropulses (EPs) assisted drilling process improves the material machinability based on the eletroplastic ...
  • Electropulsing to assist conventional manufacturing processes 

    Sánchez Egea, Antonio José (Universitat Politècnica de Catalunya, 2016-01-26)
    Doctoral thesis
    Open Access
    This thesis presents a study on the variation of the mechanical properties of some materials. These variations are registered for processes as bottom bending, wire drawing or round turning, which are performed under high ...
  • Estimation of the polishing time for different metallic alloys in surface texture removal 

    González Rojas, Hernan Alberto; Sánchez Egea, Antonio José; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi; Jorba Peiró, Jordi (2018-01-29)
    Article
    Open Access
    The aim of this work is to propose a novel analytical model for predicting the polishing time and behavior of the surface texture removal in different metal alloys. The surface texture, resulting from a previous milling ...
  • Estudio de la variación de la rugosidad y la dureza superficial en piezas torneadas con asistencia de electroplasticidad 

    Montilla Montaña, Carlos; Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Kallewaard, Valentina (2014)
    Conference report
    Open Access
    Se presentan los resultados de un trabajo experimental destinado a determinar la variación de la rugosidad y la dureza superficial de algunos metales (aluminio 6061, latón SAE 41 y acero SAE 1020), al ser torneados en ...
  • Estudio del fenómeno de electroplasticidad atérmica en el comportamiento mecánico y metalúrgico del acero AISI-SAE 4140 ensayado a tracción 

    Montilla Montaña, Carlos A.; González Rojas, Hernan Alberto; Higuera Cobos, Oscar Fabián; Kallewaard, Valentina; Sánchez Egea, Antonio José (2018)
    Conference report
    Open Access
    El fenómeno de electroplasticidad (EP por sus siglas en inglés) consiste en el cambio de las propiedades mecánicas de un metal, debido a la aplicación simultánea de esfuerzos mecánicos de tracción, compresión, flexión, ...
  • Friction capabilities of graphite-based lubricants at room and over 1400 K temperatures 

    Sánchez Egea, Antonio José (2019-01-02)
    Article
    Restricted access - publisher's policy
    The present work investigates the lubricant capabilities at room and hot-forging temperatures (>1400 K) of three types of lubricants with two different graphite concentrations (8% and 12%). These lubricants are distinguished ...
  • Improvement of cold wire drawing process by electropulsing 

    Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Jorba Peiró, Jordi (2015)
    Conference report
    Restricted access - publisher's policy
    The electroplastic effects on wire drawing process assisted with different short time current pulses configurations are investigated experimentally. The current pulses were induced to a specimen during the drawing process. ...
  • Influencia del proceso de bruñido con bola sobre la dureza y las tensiones residuales en el aluminio A92017 

    Travieso Rodriguez, Jose Antonio; González Rojas, Hernan Alberto; Gómez Gras, Giovanni; Nápoles Alberro, Amelia; Sánchez Egea, Antonio José (2012)
    Conference lecture
    Open Access
    El bruñido con bola se realiza, para mejorar el acabado de las piezas que han sido mecanizadas y para obtener una superficie más dura con tensiones residuales a compresión. De este modo se obtendrá una mayor resistencia ...
  • Joining metrics enhancement when combining FSW and ball-burnishing in a 2050 aluminium alloy 

    Sánchez Egea, Antonio José; Rodriguez, Adrian; Celentano, Diego Javier; Calleja, Amaia; López de la Calle, Luís Norberto (Elsevier, 2019-06-15)
    Article
    Open Access
    This report describes the effect of the ball-burnishing process on the mechanical properties of 2050 aluminium alloy that was previously friction stir welded. This process is a fast, environmentally-friendly and cost-effective ...
  • Machinability estimation by drilling monitoring 

    González Rojas, Hernan Alberto; Nápoles Alberro, Amelia; Sánchez Egea, Antonio José (2018-07-03)
    Article
    Open Access
    This article describes the development of a methodology to measure the specific cutting energy (SCE) in drilling. The SCE allows to characterize the machining process, thus obtaining a technologic approach to plan the ...
  • Máquinas, procesos, personas y datos, las claves para la revolución 4.0 

    Sánchez Egea, Antonio José; López de la Calle, Luís Norberto (2018-11-01)
    Article
    Open Access
  • Mechanical and metallurgical changes on 308L wires drawn by electropulses 

    Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Celentano, Diego Javier; Jorba Peiró, Jordi (2015-11-17)
    Article
    Restricted access - publisher's policy
    The electroplastic effects resulting from different electropulses configurations on a wire drawing process are investigated experimentally and numerically. Electropulses are induced into 308L stainless steel while it is ...