Fuertes Bonel, Juan Pablo

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https://academica-e.unavarra.es/handle/2454/49044

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Fuertes Bonel

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Juan Pablo

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Ingeniería

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ISC. Institute of Smart Cities

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0000-0002-4531-560X

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88736

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9500

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2015 - 20173
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End date: 2019 × Subject: Damage ×

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Now showing 1 - 3 of 3
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    PublicationOpen Access
    Comparative study of the damage attained with different specimens by FEM
    (Elsevier, 2015) Fuertes Bonel, Juan Pablo; Luri Irigoyen, Rodrigo; Luis Pérez, Carmelo Javier; Salcedo Pérez, Daniel; León Iriarte, Javier; Puertas Arbizu, Ignacio; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen Ingeniaritza
    This present research work deals with the analysis of the design of different specimen geometries so that by finite volume simulations, the appearance of cracks may be predicted in the case of forging processes. To this end, each of the geometries selected are studied by means of compression tests between plane shape dies in the same conditions (T = 25 ºC). On the one hand, a value for the critical damage value is obtained by applying the Cockroft-Latham’s criterion and on the other hand, a damage distribution along all the specimen volume with the aim of defining a specimen which shows the most likely place for the crack to appear. This crack location may be also determined through visual inspection with the aim of being able to evaluate this experimentally in the near future.
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    PublicationOpen Access
    Análisis y modelización del daño en elementos mecánicos obtenidos a partir de material nanoestructurado
    (2017) Fuertes Bonel, Juan Pablo; Luis Pérez, Carmelo Javier; Luri Irigoyen, Rodrigo; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen Ingeniaritza
    En la presente tesis doctoral se aborda el diseño de un componente mecánico con estructura submicrométrica, obtenido a partir de material previamente procesado mediante Deformación Plástica Severa (SPD) por Extrusión en Canal Angular Constante (ECAP). Esta tesis doctoral se ha desarrollado en el marco de las actividades llevadas a cabo en el Proyecto Nacional de Investigación (DPI 2013-41954-P). Para la realización de esta tesis doctoral, se va a emplear una nueva ley de fluencia y una metodología para obtener el daño crítico, que permita caracterizar el comportamiento de la AA5083, en el proceso de forja del componente mecánico. Mediante simulaciones por volúmenes finitos y por elementos finitos se va a diseñar un conjunto de matrices, para la fabricación del componente mecánico por forja isotérmica. Por último, se va a estudiar el daño por desgaste en funcionamiento del componente mecánico. Primeramente, se obtendrá mediante ensayos de fatiga la carga adecuada, para que el fallo en el componente se produzca por desgaste y no por fatiga. Y seguidamente se analizará su comportamiento en servicio. Los resultados obtenidos en esta tesis doctoral mostraron que el material con grano submicrométrico tiene por un lado, mejores propiedades mecánicas y por el otro, un mejor comportamiento en servicio.
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    PublicationOpen Access
    Experimental modelling of critical damage obtained in Al-Mg and Al-Mn alloys for both annealed state and previously deformed by ECAP
    (Elsevier, 2016) Luri Irigoyen, Rodrigo; Fuertes Bonel, Juan Pablo; Luis Pérez, Carmelo Javier; Salcedo Pérez, Daniel; Puertas Arbizu, Ignacio; León Iriarte, Javier; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen Ingeniaritza
    Assessing the damage produced in plastic deformation processes permits the optimum manner to shape a material that could avoid any cracks from appearing. In this present research work, the absolute critical damage in the following aluminium alloys: AA5754, AA5083 and AA3103 is to be determined. In order to do this, compression tests between plane-shape dies will be performed for the abovementioned alloys at a temperature range which varies from 25 °C to 300 °C and using Cockroft–Latham's prediction model. Furthermore, the results obtained by finite volume simulations will be compared with those obtained by experimental tests with isothermal upsetting. Given that in these last few years there has been a growing interest in obtaining mechanical components from submicrometric and/or nanometric structure materials which have been previously-processed by severe plastic deformation (SPD), this present research work deals with the determination of absolute critical damage for the abovementioned alloys once they have been ECAP (Equal Channel Angular Pressing) processed. This is considered to be of interest since it could allow the prediction of optimal processing conditions in advance.