Examinando por Autor "Tequia Rojas, Brandon Steven"
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Ítem Estudio de microestructura y correlación con los valores de microdureza en uniones soldadas de un acero estructural : caso de estudio marco de bicicletaGarcía Martínez, Brayan Camilo; Tequia Rojas, Brandon Steven; Correa Murillo, Luis HernandoThroughout this project, five welded samples were taken from a bicycle frame that were in service to be studied. The metallography studies were carried out using an optical microscope and electronic scanning to identify the different areas formed and correlate it through a microhardness study on the samples, in order to analyze the effects of joining a piece by this method.Through a statistical study will confirm the veracity of the results obtained after performing the microhardness tests, further it will also be seen how these data ocillate if the welding is not applied in the proper way and the affectation that it has on the base material by this way.Ítem Prueba Metalografíca en Uniones Soldadas con Presencia de Corrosión en Acero Estructural: Caso de Estudio BicicletaGarcia Martinez, Brayan Camilo; Tequia Rojas, Brandon Steven; Correa, Luis HernandoIn this Project, a test tuve of structural Steel from a bicycle frame was analyzed to study the behavior that causes corrosion in this type of material, which is welded by electric arc (electrode E6013) then, nondestructive was made such as analysis in the optical microscope and electron microscope; an scan was executed at different áreas of the specimen by taking pictures of various approaches to analyze its metallographic structure and types of corrosion. Also, a microhardness test was realized for a complete microstructural analysis of the material and identify the properties considering the environment that was used. Finally, a comparison of direct and indirect costs that can produce this attack on the element study was executed.