Now showing items 1-20 of 30

  • A comparative study of the thermal behavior of three different 3D printer liquefiers 

    Jerez Mesa, Ramón; Gómez Gras, Giovanni; Travieso Rodriguez, Jose Antonio; García Plana, Victoria (2017-06-29)
    Article
    Open Access
    The expansion of 3D printing systems as mechatronic devices able to localize manufacturing activities has attracted the attention in academic and professional labs worldwide. However, little is known from a formal point ...
  • Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4 

    García Granada, Andrés Amador; Gómez Gras, Giovanni; Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Reyes Pozo, Guillermo (2017-04-12)
    Article
    Open Access
    Ball-burnishing induces compressive residual stresses on treated materials by the effect of plastic deformation. The result is an increase in the fatigue life of the treated part, retarding the initiation of cracks on the ...
  • 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 ...
  • Characterization of cutting parameters in the minimum quantity lubricant (MQL) machining process of a gearbox 

    Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; García Vilana, Silvia; Mainau Noguer, Ferran; Jerez Mesa, Ramón (IGI Global, 2015-02-09)
    Article
    Restricted access - publisher's policy
    This paper aims to find the key process parameters for machining different parts of an automobile gearbox, commissioned by a company that needs to replace with the MQL lubrication system their current machining process ...
  • 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
  • Comparison of thermal performance of 3D printer liquefiers through finite element models 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; Llumà Fuentes, Jordi; Traver Ramos, Oriol (2016)
    Conference report
    Open Access
    Open source 3D printers have experienced an intense expansion during the last years, mainly because of their accessibility and the vast availability of information thanks to user communities. This fact presents researchers ...
  • Development, characterization and test of an ultrasonic vibration-assisted ball burnishing tool 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; Llumà Fuentes, Jordi (2018-03-01)
    Article
    Open Access
    This paper presents the design and characterization of an ultrasonic vibration-assisted ball burnishing (VABB) tool on Ti-6Al-4V. This process is based on the modification of conventional ball burnishing, by means of the ...
  • Efectos del bruñido con bola acustoplástico sobre la integridad superficial de Ti6Al4V 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; Llumà Fuentes, Jordi (2018)
    Conference report
    Open Access
  • Effects of a ball-burnishing process assisted by vibrations in G10380 steel specimens 

    Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; Dessein, Gilles; Carrillo, F J.; Alexis, Joël; Jorba Peiró, Jordi; Aubazac, Nathalie (2015-11-20)
    Article
    Open Access
    This paper explores the effects on the surface roughness, hardness and residual stress of G10380 steel specimens milled and treated with a ball-burnishing process assisted by vibrations. These vibrations are incorporated ...
  • Estudio comparativo del comportamiento térmico de diferentes disipadores de calor para impresoras 3D a través de MEF 

    Jerez Mesa, Ramón; Gómez Gras, Giovanni; Plana García, Victoria; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi (2016)
    Conference report
    Open Access
    Las impresoras 3D de código abierto han experimentado una rápida expansión durante los últimos años, protagonizando una verdadera revolución a niveles doméstico y educativo, y ocupando nuevos nichos de mercado como tecnología ...
  • Estudio del proceso de bruñido con bola asistido por una vibración 

    Gómez Gras, Giovanni (Universitat Politècnica de Catalunya, 2015-04-17)
    Doctoral thesis
    Open Access
    The aim of this thesis is studying and characterizing a ball burnishing process assisted with vibrations. By introducing vibrations in the overall process, results are enhanced if compared to the ones derived from a ...
  • Estudio experimental del efecto de bruñido sobre la vida a fatiga de probetas de acero AISI 1038 

    Jerez Mesa, Ramón; Gómez Gras, Giovanni; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi; Casadesús Farràs, Oriol; Madueño Guerrero, Manel (2016)
    Conference report
    Open Access
    El bruñido es una operación de acabado por deformación plástica que se ejecuta con herramientas dotadas de elementos indentadores capaces de transmitir una fuerza controlada. Este proceso es conocido por su capacidad de ...
  • Experimental characterization of the influence of lateral pass width on results of a ball burnishing operation 

    Gómez Gras, Giovanni; Travieso Rodriguez, Jose Antonio; Jerez Mesa, Ramón (2015-12-25)
    Article
    Open Access
    Ball burnishing has proved to be a highly effective mechanical finishing process of industrial workpieces, because of the excellent surface roughness and fatigue performance that induces in treated workpieces. In order to ...
  • Experimental study of lateral pass width in conventional and vibrations-assisted ball burnishing 

    Gómez Gras, Giovanni; Travieso Rodriguez, Jose Antonio; Jerez Mesa, Ramón; Llumà Fuentes, Jordi; Gomis de la Calle, Bernat (2016-02-20)
    Article
    Open Access
    Burnishing is a mechanical finishing operation performed on workpieces to enhance their surface quality through plastic deformation. One of the main issues to understand the overall process is the behavior of the elastoplastic ...
  • Experimental study on the mechanical effects of the vibration-assisted ball-burnishing process 

    Travieso Rodriguez, Jose Antonio; Gómez Gras, Giovanni; Jorba Peiró, Jordi; Carrillo, F J.; Dessein, Gilles; Alexis, Joël; González Rojas, Hernan Alberto (2015-12-02)
    Article
    Open Access
    Burnishing processes are effective methods for treating pieces to increase their durability and roughness. Studies reveal that traditional burnishing can be strongly improved with the assistance of external energy sources. ...
  • Fatigue lifespan study of PLA parts obtained by additive manufacturing 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi; Gómez Gras, Giovanni; Puig, Daniel (2017)
    Conference lecture
    Open Access
    Currently, additive manufacturing (AM) is not limited to prototype manufacturing, but is also used to generate parts with final applications. This paper considers this aspect of 3D printing, and aims to characterize fatigue ...
  • Fatigue lifespan study of PLA parts obtained by additive manufacturing 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi; Gómez Gras, Giovanni; Puig Martínez, Daniel (2017-10-05)
    Article
    Open Access
    Currently, additive manufacturing (AM) is not limited to prototype manufacturing, but is also used to generate parts with final applications. This paper considers this aspect of 3D printing, and aims to characterize fatigue ...
  • Fatigue performance of fused filament fabrication PLA specimens 

    Gómez Gras, Giovanni; Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi (2017-12-13)
    Article
    Open Access
    This paper aims to analyze the fatigue response of PLA parts manufactured through fused filament fabrication (FFF). The influence of four factors (layer height, fill density, nozzle diameter and velocity) on the fatigue ...
  • Finite element analysis of the thermal behavior of a RepRap 3D printer liquefier 

    Jerez Mesa, Ramón; Travieso Rodriguez, Jose Antonio; Corbella, Xavier; Busqué, Raquel; Gómez Gras, Giovanni (2016-05-01)
    Article
    Open Access
    The aim of this paper is to analyze the performance of a RepRap 3D printer liquefier by studying its thermal behavior, focusing on the convective heat dissipation developed along the liquefier body during the 3D printing ...
  • Hardening effect and fatigue behavior enhancement through ball burnishing on AISI 1038 

    Travieso Rodriguez, Jose Antonio; Jerez Mesa, Ramón; Gómez Gras, Giovanni; Llumà Fuentes, Jordi; Casadesús Farràs, Oriol; Madueño Guerrero, Manel (Elsevier, 2019-12-18)
    Article
    Restricted access - publisher's policy
    The objective of this paper is to present a comprehensive study of the effects of ball burnishing on the low cycle fatigue endurance of cylindrical specimens subjected to alternative bending stress, by constructing fatigue ...