Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

Browse

Subject: search.filters.subject.DEFORMACIÓN

Search Results

Now showing 1 - 5 of 5
  • No Thumbnail Available
    Item
    Modelo de material para perfiles conformados en frío de sección transversal UV de acero a572, para espesores de 6 mm y 8 mm
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2024-02) Muzo Chico, Danny Alejandro; Córdova Acosta, Christian Alexander; Peña Jordán, Francisco Agustín
    There is a notable deficiency in accurate data and analysis concerning thick-walled structural sections, particularly those of the UV cross-section. There are studies on thin-walled cold-formed steels, there is a gap in structural engineering knowledge due to the lack of studies performed in the thick-walled environment and the lack of material models specifically designed for cold-formed UV cross-sections using A572 steel. The experimental work started using the cold forming process of a structural profile of UV cross section of ASTM A572 gr 50 steel with thicknesses of 6 mm and 8 mm, which by water jet cutting, standardized specimens were extracted to perform tensile, micrographic and hardness tests, which are performed under ASTM E8, ASTM E112, ASTM E18 standards, respectively. Data were collected from each test and their mechanical behavior was analyzed. Several comparisons were made between the results of curved specimens and flat specimens of each thickness, thus identifying the variations in their mechanical properties. The hardness tests indicate the zone of affectation being 1.6t, in addition to the affectation of the cold forming process. As a result, the tests performed yielded data on the microstructural behavior of ASTM A572 steel in the cold forming process, as well as its mechanical properties, which will be useful for the support of technical reports.
  • No Thumbnail Available
    Item
    Modelo de material para perfiles conformado en frío de sección transversal UV de acero a36, para espesores de 10 mm y 12 mm
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2024-02) Caiza Llumitasig, Edisson Dario; Pullutasig Chuquisala, David Andrés; Peña Jordán, Francisco Agustín
    The material model obtained for cold-formed UV cross-section profiles of ASTM A36 steel, for thicknesses of 10 mm and 12 mm, is presented as a versatile and efficient structural solution. This model has been developed considering its mechanical properties and its usefulness in the construction industry due to its resistance and ease of forming. To analyze the impact of the mechanical properties in the cross section of the profile obtained, three types of tests were carried out. In the tensile test, the ASTM E8 standard was applied, evaluating its mechanical properties, taking into account the tensile strength, elastic limit and modulus of elasticity in the specimens of the different sections (wings, back, curves) of the profile. Using the ASTM E10 standard, the hardness test was carried out on specimens extracted for each thickness, determining their hardness in the virgin material and in the cross section of the UV profile. Using the ASTM E-112 standard, the metallographic test was applied, obtaining micrographic photographs of the grains of the virgin material and the affectation in the cross section of the UV profile. As a result, the mechanical tests carried out show a comprehensive view of the mechanical properties in the cross section of the UV profile, highlighting a greater rigidity in the 12 mm profile and a greater impact on the mechanical properties in the curved sections of the profile, reaching maximum stresses. tensile strength of 551.5 MPa and 554.21 MPa for thicknesses of 10 mm and 12 mm.
  • No Thumbnail Available
    Item
    Fabricación del mecanismo de conformado de la punta de un tubo hipodérmico usado en un dispositivo mecánico generador de flujo con presión positiva CPAP usado como alternativa en el tratamiento de pacientes con covid-19
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2021-09) Ramos Freire, Christopher Vicente; Morales Criollo, William Mauricio; Pérez Salinas, Cristian Fabian
    With the development of the mechanism system for shaping the tip of a hypodermic tube, it will allow the manufacture and adaptation of this fundamental internal element of the respirator, consequently it will help to reduce the time of elaboration and assembly of the same. The methodology of this technical project begins with an evaluation of the information provided by the Mercedes AMG company and the UCL. For the design of the deformation mechanism of hypodermic tubes, SolidWorks software was used, while ANSYS software was used for simulation, in which an analysis of the machine's infrastructure was carried out to determine that there is no overstress and that it may cause failures; likewise, an impact analysis was carried out in a specific contact region, between the tip and the hypodermic tube, based on a height of fall of an element (weight), in order to determine the deformation of the tube. Finally, the construction of the machine was executed. Functional tests were carried out in the laboratory of the Faculty of Civil and Mechanical Engineering, where results of 1.31 mm (average value) of deformation of the hypodermic tube were obtained, tests that were adapted with the simulations carried out, resulting in a correct operation of the mechanism.
  • No Thumbnail Available
    Item
    Diseño y construcción de una prensa y molde para compactar polvo metálico para el laboratorio de materiales de la Carrera de Ingeniería Mecánica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Valencia Escobar, John Bryan; López Villacís, Gonzalo Eduardo
    This project aims to develop a methodology for the design and construction of hydraulic presses with powder metallurgy applications, and also allows people interested in the subject to determine the most significant design theories for this case. For this, the manufacturing process of the metal powder compacting elements was carried out, according to ASTM B 925-03, which allows the preparation and production of specimens for P / M powder metallurgical tests, and for each mechanical element of the hydraulic press, considering the design theories learned in the course of the career, put into practice in this thesis topic. For the manufacture of powder metallurgical specimens, a series of samples were made and their geometry was evaluated to determine their validity by means of a 6 ”/ 150 mm insize brand king foot calibrator that provides a minimum percentage of error as established by ASTM B 925 -03. After having performed the analysis of the dimensions of specimens obtained, it was evidenced that the dimensions of these tests were maintained within the tolerance range established by ASTM B 925-03. With this, it was possible to verify the optimal operation of the machine and that our project met the objectives established for the different test specimens.
  • No Thumbnail Available
    Item
    Estudio a fatiga mecánica de fundiciones de aluminio obtenida de chatarra de pistones de buses HINO FG para determinar el diagrama esfuerzo-número de ciclos
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2016) León Guerrero, Tainy Elizabeth; Guamanquispe Toasa, Jorge Patricio