Ingeniería Mecánica

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

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Subject: search.filters.subject.MATRIZ POLIÉSTER

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    Evaluación del comportamiento mecánico de un material compuesto de matriz poliéster con fibra de cabello humano y su posible aplicación industrial
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Reinoso Arias, Anahí Raquel; Espín Lagos, Segundo Manuel
    In this investigation, was evaluated the mechanical behavior of a composite material of a polyester matrix reinforced with human hair fiber, so composite sheet were elaborated with different fiber sizes, orientations and volumetric fractions, later the laser cut was made and were obtained the specimens, the same ones that were tested under the requirements of ASTM 3039, ASTM 7264 and ASTM 5628 for traction, flexure and impact respectively, with the purpose of knowing the most suitable combination, which provides the best mechanical properties. Of the groups of test pieces made with 3 different volumetric fractions: 70% -30%, 80% -20% and 90% -10% of matrix and reinforcement respectively, the first group of test pieces constituted by a volumetric fraction of 70% of matrix and 30% reinforcement and with longitudinal fiber orientation at 0 °, stand out from the rest with a maximum tensile strength of 28,472 MPa, maximum resistance to bending of 66.24 MPa and 1,371 J of impact energy. According to the analysis carried out, the potential of the human hair fiber as a reinforcement in the composite material has been assessed and its possible application in the area of furniture and in the automotive industry.
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    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 Henry
    The 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.