Ara es mostren els items 63-75 de 75

    • Simulación de la formación de plasma en el mecanizado por electroerosión 

      Villagomez Galindo, Miguel; González Rojas, Hernán Alberto (Academia Journals, 2017)
      Text en actes de congrés
      Accés obert
      El proceso de mecanizado por electroerosión es una técnica de manufactura no convencional caracterizada por descargas eléctricas controladas que liberan tal cantidad de energía que es capaz de transformar en plasma el ...
    • Simulación en 3D del arranque de viruta en torno para el acero AISI 1045 bajo Johnson Cook usando ANSYS 

      Florez García, Luis Carlos; González Rojas, Hernán Alberto; Tabares Bocanegra, Luván Stiven (Universidade NOVA de Lisboa, 2017)
      Text en actes de congrés
      Accés obert
      En el presente trabajo se hace la simulación en tres dimensiones del arranque de viruta en torno para el Acero AISI 1045, en el cuál se utilizando el módulo de dinámica explícita del programa Ansys. Se usa un modelo para ...
    • Solución analítica para el problema de deformación plástica de un cuerpo cilíndrico 

      Travieso Rodríguez, José Antonio; González Rojas, Hernán Alberto (2009)
      Text en actes de congrés
      Accés obert
      En este artículo se relata la obtención de una solución para predecir la presión media hecha por una prensa en un proceso de recalcado de un cuerpo cilíndrico. La principal novedad en este trabajo es la consideración de ...
    • Specific energy modeling of abrasive cut off operation based on sliding, plowing, and cutting 

      Awan, Muhammad Rizwan; González Rojas, Hernán Alberto; Perat Benavides, Josep Ignasi; Hameed, Saqib; Hussain, Abrar; Sánchez Egea, Antonio José (Elsevier, 2022-05)
      Article
      Accés obert
      Studying the specific energy during material removal mechanism at micro-scale provides a better understanding of energy transition between different material removal regimes. Modeling of specific energy into components of ...
    • Study of a ball-burnishing vibration-assisted process 

      Gómez Gras, Giovanni; Travieso Rodríguez, José Antonio; González Rojas, Hernán Alberto; Nápoles Alberro, Amelia; Carrillo, Francisco Javier; Dessein, Gilles (2015-01-01)
      Article
      Accés obert
      First of all, this work refers to the study of the ball-burnishing process assisted by a vibration. It starts by considering that this vibration helps to make the development of this finishing process easier, because it ...
    • Surface damaging of brass and steel pins when sliding over nitrided samples cut by finishing and roughing EDM conditions 

      Martynenko, Vitali; Martinez Krahmer, Daniel; Nápoles Alberro, Amelia; Cabo, Amado; Pérez, Daniela; Zayas Figueras, Enrique Ernesto; González Rojas, Hernán Alberto; Sánchez Egea, Antonio José (Multidisciplinary Digital Publishing Institute (MDPI), 2020-07-17)
      Article
      Accés obert
      In the forging industry, surface quality and surface treatments of dies are crucial parameters to extend their life. These components are usually machined by milling or by Electrical Discharge Machining (EDM), and the final ...
    • Surface topography obtained in side milling processes as a function of eccentricity and of the helix angle 

      Buj Corral, Irene; Vivancos Calvet, Joan; González Rojas, Hernán Alberto (2011)
      Text en actes de congrés
      Accés restringit per acord de confidencialitat
      In the present paper results about simulation of surface topography in side milling with cylindrical milling tool are presented. Different values for grinding errors of tool radii and for eccentricity were taken into ...
    • Tecnologías de fabricación. Material docente complementario: guiones de prácticas y problemas complementarios 

      Vivancos Calvet, Joan; Domínguez Fernandez, Alejandro; Buj Corral, Irene; Gomà Ayats, Joan Ramon; González Rojas, Hernán Alberto; Costa Herrero, Lluís; Rodríguez Sendra, Rosa Maria (2008-11-28)
      Llibre
      Accés restringit per política de l'editorial
    • Thermomechanical analysis of an electrically assisted wire drawing process 

      Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Celentano, Diego Javier; Jorba Peiró, Jordi; Cao, Jia (2017-09-18)
      Article
      Accés restringit per política de l'editorial
      Electrically-assisted wire drawing process is a hybrid manufacturing process characterized by enhancement of the formability, ductility and elongation of the wire drawn specimen. A thermomechanical model to describe the ...
    • Time measurement characterization of stand-to-sit and sit-to-stand transitions by using a smartphone 

      González Rojas, Hernán Alberto; Chaná Cuevas, Pedro; Zayas Figueras, Enrique Ernesto; Cardona Foix, Salvador; Sánchez Egea, Antonio (Springer, 2017-10-23)
      Article
      Accés obert
      The aim of this study is to analyze a common method to measure the acceleration of a daily activity pattern by using a smartphone. In this sense, a numerical approach is proposed to transform the relative acceleration ...
    • TremorSoft: an decision support application for differential diagnosis between Parkinson’s disease and essential tremor 

      Loaiza Duque, Julián David; Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Chaná Cuevas, Pedro; Ferreira, Joaquim J.; Costa, João (2023-05-16)
      Article
      Accés obert
      A cost-effective, non-invasive, and easy-to-use tool is presented that uses the 6-axis inertial sensor of the smartphone or a specific wearable sensor, boosted by machine learning, to support early differential diagnosis ...
    • Turning process assisted in situ by short time current pulses 

      Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Montilla Montaña, Carlos A.; Kallewaard, Valentina (2015-12-10)
      Article
      Accés obert
      This article reports on a novel machining process technique: in situ electrically assisted turning process based on the influence of electropulsing. An in house generator was used to induce a current intensity of 90 A, ...
    • Using machine learning and accelerometry data for differential diagnosis of Parkinson’s disease and essential tremor 

      Loaiza Duque, Julián D.; González Vargas, Andrés Mauricio; Sánchez Egea, Antonio José; González Rojas, Hernán Alberto (Springer, 2019-10-09)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Parkinson’s disease (PD) and Essential Tremor (ET) are the most common tremor syndromes in the world. Currently, a specific Single Photon Emission Computed Tomography (123I-FP-CIT SPECT) has proven to be an effective tool ...