Exploració per autor "González Rojas, Hernán Alberto"
Ara es mostren els items 41-60 de 77
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Examen parcial (Curs 2022-2023)
González Rojas, Hernán Alberto; Magnusson Morer, Ingrid (Universitat Politècnica de Catalunya, 2023-04-13)
Examen
Accés restringit a la comunitat UPC -
Examen parcial [Curs 2019-2020] - Q2
González Rojas, Hernán Alberto (Universitat Politècnica de Catalunya, 2020-03-27)
Examen
Accés restringit a la comunitat UPC -
Examen Teoria A (Curs 2016/2017)
González Rojas, Hernán Alberto (Universitat Politècnica de Catalunya, 2017-06-23)
Examen
Accés restringit a la comunitat UPC -
Experimental Data-Driven Insertion Force Analyses of Hypodermic Needles in a Soft Tissue with an In-House Test Bench
Chávez Pereda, Erick David; Loaiza Duque, Julián David; Cerón Hurtado, María Alejandra; González Rojas, Hernán Alberto; Sánchez Egea, Antonio José (2022)
Text en actes de congrés
Accés restringit per política de l'editorialHypodermic needles are used in a wide range of medical procedures. In these procedures, an insertion force is applied to the needle to insert it through the soft tissue. In that way, when the tip of the needle encounters ... -
Experimental study on the mechanical effects of the vibration-assisted ball-burnishing process
Travieso Rodríguez, José Antonio; Gómez Gras, Giovanni; Jorba Peiró, Jordi; Carrillo, F J.; Dessein, Gilles; Alexis, Joël; González Rojas, Hernán Alberto (2015-12-02)
Article
Accés obertBurnishing 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. ... -
Experimental technique to analyze the influence of cutting conditions on specific energy consumption during abrasive metal cutting with thin discs
Awan, Muhammad Rizwan; González Rojas, Hernán Alberto; Perat Benavides, Josep Ignasi; Hameed, Saqib (Springer, 2021-08-09)
Article
Accés obertSpecific energy consumption is an important indicator for a better understanding of the machinability of materials. The present study aims to estimate the specific energy consumption for abrasive metal cutting with ultra-thin ... -
Improvement of cold wire drawing process by electropulsing
Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Jorba Peiró, Jordi (2015)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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. ... -
Influence of eccentricity on roughness distributions in side milling
Buj Corral, Irene; Vivancos Calvet, Joan; González Rojas, Hernán Alberto (2016-06-01)
Article
Accés obertIn this paper, a numerical model was used based on the tool-piece geometric intersection, which enables the determination of a roughness profile as a function of feed, tool radii and tool eccentricity in side milling ... -
Influence of peak height prior to milling the resulting surface roughness of the ball burnishing process on convex and concave pieces of aluminum
Gómez Gras, Giovanni; Travieso Rodríguez, José Antonio; González Rojas, Hernán Alberto; Nápoles Alberro, Amelia (2012)
Comunicació de congrés
Accés obertMolds, counterfoils of conformation, and many other industrial pieces with important presentations, face constant the engineers with the problem of obtaining superficial qualities that minimize the friction, optimize the ... -
Influence of the regime of electropulsing-assisted machining on the plastic deformation of the layer being cut
Hameed, Saqib; González Rojas, Hernán Alberto; Perat Benavides, Josep Ignasi; Nápoles Alberro, Amelia; Sánchez Egea, Antonio J (2018-05-25)
Article
Accés obertIn this article, the influence of electropulsing on the machinability of steel S235 and aluminium 6060 has been studied during conventional and electropulsing-assisted turning processes. The machinability indices such as ... -
Influence of the tool eccentricity on the surface roughnes obtained in side milling processes
Buj Corral, Irene; Vivancos Calvet, Joan; González Rojas, Hernán Alberto (2009)
Comunicació de congrés
Accés restringit per política de l'editorial -
Influencia del proceso de bruñido con bola sobre la dureza y las tensiones residuales en el aluminio A92017
Travieso Rodríguez, José Antonio; González Rojas, Hernán Alberto; Gómez Gras, Giovanni; Nápoles Alberro, Amelia; Sánchez Egea, Antonio José (2012)
Comunicació de congrés
Accés obertEl 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 ... -
Ingeniería de procesos de fabricación
Travieso Rodríguez, José Antonio; González Rojas, Hernán Alberto (2011-10-21)
Llibre
Accés obert -
Machinability estimation by drilling monitoring
González Rojas, Hernán Alberto; Nápoles Alberro, Amelia; Sánchez Egea, Antonio José (2018-07-03)
Article
Accés obertThis 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 ... -
Machine learning-based prediction of specific energy consumption for cut-off grinding
Awan, Muhammad Rizwan; González Rojas, Hernán Alberto; Hameed, Saqib; Riaz, Fahid; Hamid, Shahzaib; Hussain, Abrar (Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-21)
Article
Accés obertCut-off operation is widely used in the manufacturing industry and is highly energy-intensive. Prediction of specific energy consumption (SEC) using data-driven models is a promising means to understand, analyze and reduce ... -
Mecanizado por arranque de viruta asistido por electropulsos
Sánchez Egea, Antonio J.; González Rojas, Hernán Alberto; Montilla Montaña, Carlos A.; Kallewaard, Valentina (EUETIB, 2014-01-01)
Text en actes de congrés
Accés obertEste artículo trata sobre una nueva técnica de mecanizado: el proceso de torneado asistido in situ con corriente eléctrica, a través de la influencia de electropulsos. Un generador ha sido fabricado para inducir intensidades ... -
Mechanical and metallurgical changes on 308L wires drawn by electropulses
Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Celentano, Diego Javier; Jorba Peiró, Jordi (2015-11-17)
Article
Accés restringit per política de l'editorialThe 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 ... -
Model based on an effective material-removal rate to evaluate specific energy consumption in grinding
Nápoles Alberro, Amelia; González Rojas, Hernán Alberto; Sánchez Egea, Antonio José; Hameed, Saqib; Peña Aguilar, Reyna Mercedes (Multidisciplinary Digital Publishing Institute (MDPI), 2019-03-21)
Article
Accés obertGrinding energy efficiency depends on the appropriate selection of cutting conditions, grinding wheel, and workpiece material. Additionally, the estimation of specific energy consumption is a good indicator to control the ... -
Modelo para predecir el tiempo de pulido de las superfícies de moldes
González Rojas, Hernán Alberto; Travieso Rodríguez, José Antonio; Jorba Peiró, Jordi; Llumà Fuentes, Jordi (2012)
Text en actes de congrés
Accés restringit per política de l'editorial -
Nonlinear Dynamic Analysis of Oscillatory Repetitive Movements in Parkinson’s Disease and Essential Tremor
Costa, Joao; González Rojas, Hernán Alberto; Valldeoriola, Francesc; Gaig, Carles; Tolosa, Eduardo; Valls-Solé, Josep (2010-11-15)
Article
Accés restringit per política de l'editorial