Ingeniería Mecánica

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    Diseño y construcción de una cámara de inflamabilidad para productos de construcción para el Laboratorio de Investigación de Ingeniería Mecánica LIM UTA
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2022-09) Vargas Cordovilla, Ronnie Efrain; Castro Miniguano, Christian Byron
    Nowadays it is important to comply with the quality requirements of construction products since their application involves the safety and life of people, it is essential that these products are fire resistant and in case of an adverse event such as this, it can be guaranteed that the spread of flame in the basic building materials is avoided. For this reason, the possibility of implementing the flammability test of construction products in the Mechanical Research Laboratory of the Faculty of Civil and Mechanical Engineering of the Technical University of Ambato has been proposed. This technical project is based on the design and manufacture of a flammability cabinet under the requirements of the NTE INEN - ISO 11925-2: 2010 standard that focuses on the testing of construction products, for this the equipment was designed considering the regulatory provisions and the equipment was built in AISI 304 steel using cutting processes and TIG welding with filler material and shielding gas, finally, the equipment was validated by testing three different materials such as: vinyl flooring, MDF and ceiling, with the test results under the criteria of NTE INEN - ISO 11925-2: 2010 it was determined that the equipment meets all the requirements.
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    Influencia de las microaleaciones (SNAM MG9011 y SNAM MG9033LA) en el proceso de obtención de fundición nodular (NTE INEN 2499-2009) para determinar las propiedades mecánicas, en la empresa Fundi Laser
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-10) Villagran Ortiz, Jairo Fabricio; Paredes Salinas, Juan Gilberto
    In thisexperimetal work, the nodular iron specimens were modeled, cast and mechanized with percentages of 1.1, 1.3, 1.5 and 1.7 percent SNAM MG9011 and 0.77 percent SNAM MG9033LA to perform the tensile test under ASTM E-8 and NTE INEN standards. -ISO 6892-1 and hardness tests under ASTM E-10, once the results were evaluated, the groups of 1.1 percent SNAM MG9011 and 0.77 percent SNAM MG9033LA were classified in grade 65-45-12. Spectrometry tests were performed in the 1.1 percent SNAM MG9011 and 0.77 percent SNAM MG9033LA groups, to verify their chemical composition under the parameters established in different bibliographies. Metallography tests were performed on all groups of SNAM MG9011 and SNAM MG9033LA specimens, to observe the effects produced on the microstructure. A tensile strength of 693.23 Megapascals, fluency limit 395.72 Megapascals, elongation percentage 12.23 percent, Brinell hardness of 187.36, large nodular grain size 148 micrometers, average 113 micrometers and small 53 micrometers were obtained for SNAM MG9011 1.1 percent and for 0.77 percent SNAM MG9033LA a tensile strength of 678.61 Megapascals, fluency limit 404.61 Megapascals, elongation percentage 15.78 percent, a Brinell hardness of 228.20, large nodular grain size 153.5 micrometers, average 128 micrometers and small 70.50 micrometers. In both cases, the graphite is shown in its microstructure, perfectly forming nodules.
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    Análisis del proceso de ranurado del material compuesto de matriz polimérica con resina epoxi y poliester reforzado con fibra de abacá
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Flores Jácome, Walter Giovanni; Pérez Salinas, Cristian Fabián
    The following research has as an objective to study the behavior that the material composed by the polymeric matrix with epoxy resin and polyester reinforced with abaca fiber has, at the moment to be subject of a grooving process, changing mechanization process parameters such as the cut speed and the advance speed, as well as the kind of tool to use. It is based on the surface response method to design the experiment, obtaining 52 combinations, each with its respective replica, giving a total of 104 grooves with cut-off speed values between 25.13 and 75.4 m/min, and an advance between 0.08 and 0.12 mm/rev, it is also applied the use of two different milling tools; the first tool 103-S (Super Acabado “Plexiglas”) and the second 107-M (Diamond serrate with front cut), the obtained results were entrance delamination factors, exiting factors and rugosity, allowing to know the superficial quality of the mixture. At the moment to develop a simultaneous optimization of the parameters used in the machining with a combination of a 85.81 m/min cut speed, advance of 0.12828 mm/rev, kind of tool 103-S, and a polyester resin matrix, entrance and exiting delamination factors are obtained similar to 1.0281 and 1.0707 respectively, and a rugosity of 2.3460μm; such values could be the best surface quality for this mixture. To complement the research, UV degradation essays were elaborated with 50, 100 and 150 exposure hours, concluding as the maximum effort traction capacity for the epoxi resin which is in the 100 hours and the polyester one to the 50 hours.