Ingeniería Mecánica
Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900
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Item Caracterización mecánica de un material compuesto de resina poliéster reforzado con fibra de vidrio y malla de acero para determinar las propiedades mecánicas(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2021-07) Alomaliza Masaquiza, Darwin Iván; Vaca Ortega, Wilson HenryIn this work, an experimental investigation of a composite material for the determination of the mechanical properties made up of polyester resin reinforced with fiberglass and steel mesh was carried out. In this composite material, the steel mesh reinforcement has 2 different types such as: galvanized steel mesh and stainless steel mesh, the number of fiberglass layers was varied, the preparation of the test pieces was carried out by compression stratification with a mold Constructed of A36 steel material. In this research the purpose is to find the best configuration that provides high mechanical properties, the specimens are tested and manufactured according to ASTM standards, for tensile testing the ASTM D3039 standard was implemented, in the bending tests the ASTM D7264 standard and test to impact according to ASTM D5628. After being tested the specimens, tabulated and collected the data. The configuration that presents the best results is that of 2 layers of fiberglass, 1 layer of stainless steel mesh cured at 25 degrees centigrade in the environment, made with compression stratification, resulting in a maximum tensile stress of 64.01 (MPa), maximum bending stress of 145.85 (MPa) and mean failure energy of 0,910 (J).Item Caracterización mecánica de un material compuesto de matriz poliéster reforzado con partículas de laurel y su incidencia en las propiedades mecánicas(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Andrango Pillajo, Wilmer Armando; Lascano Moreta, Alejandra MarleneThe present experimental work was carried out with the purpose of defining the mechanical properties of a composite material formed by polyester resin and reinforced with laurel particles. For which two types of configurations and three types of volumetric variations were used, in order to establish the ideal combination that has the best mechanical properties of the composite material. In this investigation, tensile, flexural and impact tests were carried out under the norms ASTM-D3039, ASTM-D7264 and ASTM-5628, which established the ideal dimensions for the preparation of the specimens. Where later the results obtained from each of the configurations and volumetric variations obtained from the composite material were rehearsed and tabulated statistically. The type of stratification was by compression using a welded steel matrix ASTM-A36, which guaranteed us a smooth surface and an excellent surface finish of the material. Through the study carried out it was possible to determine that the best mechanical properties of the composite material fall on the type A configuration, with a particle size of 500 microns and with a volumetric fraction of 30 percent of laurel particle reinforcement plus 70 percent of polymer matrix of polyester resin. Showing results in maximum tensile stress of 27.39 Mpa, tensile elastic modulus of 2214.71 Mpa, maximum deformation 1.32 percent, maximum flexural stress of 117.09 Mpa, flexural elasticity modulus of 6924.7 Mpa, maximum deflection 3.46 mm and impact resistance of 0.19 J.Item Evaluación del comportamiento mecánico de un material compuesto de matriz poliéster reforzado con fibras de tereftalato de polietileno y su posible aplicación industrial(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Sailema Moyolema, Christian Mauricio; Espín Lagos, Segundo ManuelIn Ecuador, tons of solid waste are produced every day, which degrade in a very long time, so the present experimental work had as objective to make a composite material of polyester matrix reinforced with fibers of recycled materials such as polyethylene terephthalate (PET), for which different volumetric fractions and also different configurations of the reinforcing material were taken. The group of test specimens with the best mechanical properties was determined through tensile, flexural and impact tests under the specifications of ASTM D3039-00, ASTM D7264-07 and ASTM D5628-10 respectively. From the analysis carried out to the three types of tests, it was determined that the composite material presenting the best mechanical characteristics corresponds to group 4 which has a volumetric fraction of 70% matrix with 30% reinforcement and with a short fiber configuration (10mm) with a random orientation and the type of stratification used was compression.Item Caracterización mecánica del material compuesto de matriz poliéster con fibra de coco para la determinación de propiedades mecánicas en aplicaciones industriales(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Mazón Ortiz, Gabriel Eduardo; Vaca Ortega, Wilson HenryThe present experimental project is based on the determination of mechanical properties of a composite material based on polyester resin reinforced with coconut fiber, in various configurations, fiber volumetric fraction and stratification, in order to establish the ideal combination that provides the best Mechanical properties of the composite for the most suitable application in the industry. Flexural, tensile and impact tests were developed under ASTM-3039, ASTM-7264 and ASTM-5628 standards. The specimens were made in a welded steel matrix, with dimensions specified in standards, with a surface finish suitable for the perfect development of the test specimens, the resin was prepared in conjunction with MECK at 2% of its volume, And the fiber was manually extracted from dried coconuts with a cleaning treatment with Sodium Hydroxide. The data were tabulated and their selection of the best combination of the samples made being the best combination of short fiber at 30% in volumetric fraction, in random orientation and manual stratification, presenting good mechanical properties, an acceptable energy absorption in the tests and good distribution of stress throughout the material The industrial applications found for our material were seen in the realm of the construction industry, the furniture industry and the automotive industry.