Ingeniería Mecánica

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Subject: search.filters.subject.ENSAYO DE IMPACTO

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Now showing 1 - 7 of 7
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    Optimización-MSR del material compuesto de matriz epoxi reforzado con fibra natural de Chambira (Astrocaryum), mediante infusión de resina al vacío y su incidencia en las propiedades mecánicas
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2022-09) Gavilanes Medina, Brayan Eduardo; Paredes Salinas, Juan Gilberto
    The importance of the discovery of new materials based on natural fibers greatly contributes to the contribution of properties that are often friendly to the environment, as well as for the bodywork industry to be effective when making accessories. Therefore, the purpose of this research is to investigate and analyze the mechanical properties that can be obtained from the materials to be used based on quantitative data collection in the case of the physical and mechanical properties of the reinforcement material as well as the material of the resin, in turn we proceeded through the vacuum bagging process by infusion to join both components, giving us as a result a new material already characterized, passing to the mechanical analysis stage which was carried out by the standards of TENSILE TEST_ASTM D3039, FLEXION_ASTM D7264, and IMPACTO_ASTM D52628-10, later the results obtained were analyzed by means of a mathematical analysis of minitab in which a main characterization was obtained that the material already established previously can yield favorable results through a results orientation configuration under a standardized norm that in the future will serve for the industrial sector as a reference.
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    Optimización (Doe-Mezclas) del material híbrido con refuerzos de fibra de abacá, fibra de cabuya y fibra de vidrio de matriz de resina epóxica y su incidencia sobre las propiedades mecánicas a flexión, tracción e impacto
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Torres Mesias, David Esteban; Paredes Salinas, Juan Gilberto
    The following experimental work was aimed at finding new combinations of composite materials conformed of fiberglass (VF), abaca fiber (FA) and cabuya fiber (FC) with epoxy matrix. For this it was used different volumetric mixtures of reinforcements, the same ones that were considered as input parameters in the statistical analysis of mixtures to optimize the mechanical properties of the results of the different treatments. Specimens were made by compression stratification to then test them and obtain data generated by the Tensile tests (ASTM D3039 / D3039M-08), Flexural (ASTM D7264 / D7264M-07), and Impact (ASTM D5628-10, FE geometry), and thus treat them under parametric assumptions developing a reliable analysis. Once the data was established, it was analyzed by means of the design of mixtures; from which, the significance of the p - value located in the mixture regression table was verified, which was inferred for the generation of the optimization of the responses of the mixtures using the minitab software. In experimental work it was possible to establish the volumetric fractions that generated the best mechanical properties of the mixture; fiberglass 0.261 percent, abaca fiber 0.003 percent, cabuya fiber 0.036 percent and epoxy matrix 0.7 percent, fulfilling the foundation of a mixture of always being equal to one.
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    Análisis numérico experimental de los componentes del material compuesto alternativo de matriz epoxi reforzada con fibras sintéticas utilizado para la fabricación y reparación de superficies de vuelo en las aeronaves del CIDFAE
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Telenchana Flores, Manuel David; Arroba Arroba, César Hernán
    The study of composite materials allows the use of new technological alternatives for the elaboration of aircraft elements. The analysis of these materials has a great value within the aeronautical field in view that the percentage of elements manufactured with this type of materials has been increasing, because the weight and operating costs of an aircraft are reduced. This research performs the characterization of the composite material of epoxy matrix reinforced with layers of flat fabric of synthetic fibers (carbon, aramid and glass) in different orientations which was achieved by combining manual stratification and vacuum, the compounds were subjected to tensile, bending and impact tests. In addition, a mathematical model is presented which predicts the elastic properties of the material based on a generalization of classical sheet theory. Finally, finite element simulation was used to contrast actual and experimental displacement results. The characterization and analysis of the tests determined that carbon fiber-reinforced compounds possess the best mechanical performance at traction and bending; however, aramid fiber-reinforced compounds have better impact resistance. The analytical method used to calculate elastic properties yielded results where the error percentage is in a range of 1percent-19 percent, while software simulation comparing the offset within the elastic zone yields error percentages not exceeding 0.2 percent.
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    Estudio de las propiedades mecánicas de una junta sismo resistente utilizando materiales de aporte comercial E7018- AR y E7018-SR sobre un acero ASTM A 36, aplicando el código AWS D1.8-D1.8M
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Ronquillo Bombón, Eduardo Benjamín; Analuiza Maiza, Oscar Iván
    The present research project has been developed with the fundamental objective of establishing the study of the mechanical properties of welding in a seismically resistant butt joint made of carbon steel ASTM A 36, welded with different types of carbon steel electrodes E7018-AR and E7018-SR, for the purposes of this analysis electrodes of the same commercial brand used nationally have been selected. Subsequently, the specimens were obtained to carry out the destructive tensile and impact tests, which were carried out in the laboratories of the Center of Productive Promotion Metal Mechanic of the H.G.P. Tungurahua, as well as in the laboratories of the Technical University of Ambato to determine the metallographic analysis of the welded joints. After having carried out the required tests we proceeded with their respective analysis and interpretation of the results, coming to determined the best filler material with the best mechanical properties on a resistant seismic joint. Finally, a proposal was made for the elaboration of a welding procedure for said WPS and PQR processes for the welding process with E7018-SR 3/32" diameter electrode with a low preheating temperature, which was the electrode that presented the best mechanical properties at the different service conditions. This research project is based on code AWS D1.8-D1.8M, the which it gives us different general dispositions. For its development we had the advice of teachers of the Technical University of Ambato of the Faculty of Civil Engineering and Mechanics.
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    Caraterización mecánica del material compuesto de matriz poliéster reforzada con fibra de hoja de Yucca Elephantipes para la determinación de propiedades mecánicas en aplicaciones industriales
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Pazmiño Guerrero, Christian Andrés; Espín Lagos, Segundo Manuel
    The present experimental work deals with the elaboration of a new composite material of polyester resin matrix and fiber reinforcement of Yucca Elephantipes leaf, to determine the best mechanical properties that this gives us with the configurations of longitudinal fiber and short fiber in the different fractions volumetric proposals. It was considered to use the leaf of this plant because it is ornamental, it is rich in fiber and many times it is discarded without any use, then with the new composite material it is allowed to use the waste produced and collaborate with the environment. The tests were performed under the requirements of ASTM D3039-15 standards for traction, ASTM D7264-15 for flexure and ASTM D5628-10 for impact. The group of test pieces tested that showed the best mechanical properties was the volumetric fraction of 35% reinforcement and 65% of matrix with longitudinal fiber configuration. The main applications of this material are in the automotive industry for the manufacture of decorative parts for vehicles, for the furniture industry, etc. Their easy manufacture and molding allow them to replace traditional materials.
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    Obtención de un material compuesto de matriz poliéster y lana de oveja para evaluar el comportamiento mecánico
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Espín Medina, Christian Xavier; Espín Lagos, Segundo Manuel
    The production of sheep wool is one of the natural resources that are not used at present, its cost is relatively low and friendly to the environment, so in the present experimental project a composite material was developed that is based on a polyester resin matrix and reinforcement configuration of sheep wool, in which two types of volumetric fractions were taken 70% matrix - 30% reinforcement and 60% matrix - 40% reinforcement, two types of configurations were also made of reinforcement: discontinuity to the longitudinal axis and discontinuity to the transverse axis. The manufacturing of the specimens was carried out in a compression steel mold. The tensile and bending tests were carried out in the Metalmecánico Carrocero Productive Production Center and the impact test was carried out in the Materials Laboratory of the Faculty of Civil and Mechanical Engineering. By means of tensile, bending and impact tests performed on the specimens and under ASTM D3039-00, ASTM D7264-07 and ASTM D5628-10 standards respectively, the composite material that obtained the best mechanical characteristics was determined, being this group 2 the which is composed of 70% polyester matrix and 30% sheep wool, with a configuration of discontinuity to the transverse axis.
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    Estudio de la aleación de aluminio 4032 reforzado con partículas de carburo de silicio y su incidencia en la dureza, resistencia y tenacidad
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2013-11) Santana Mera, Luis Fabricio; Espín Lagos, Segundo Manuel
    El Presente trabajo muestra la investigación realizada en fundiciones de aluminio 4032 de pistones automotrices reciclados reforzados con diferentes porcentajes de partículas de carburo de silicio, las mismas que fueron obtenidas con la finalidad de comparar las propiedades mecánicas del compuesto. Se realizaron ensayos de tracción, dureza, impacto y análisis metalográfico en los laboratorios de la Facultad de ingeniería Civil y Mecánica de la Universidad Técnica de Ambato para determinar la variación de las propiedades mecánicas con 4 porcentajes diferentes de refuerzo, posteriormente fueron tabulados y analizados. Se obtuvo conclusiones y recomendaciones en función de los resultados obtenidos, que contribuyen a generar procesos de refuerzo con partículas de carburo de silicio que pueden ser aplicados en el campo industrial. Finalmente se determinó el proceso que mejor combinación de propiedades generó, y se desarrollaron los procedimientos respectivos.