Ingeniería Mecánica

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

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Has files: YesSubject: search.filters.subject.COEFICIENTE DE FRICCIÓN

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    Banco de pruebas para determinar la aceleración y coeficiente de fricción el cual será designado al Laboratorio de Física de la Facultad de Ingeniería Civil y Mecánica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2022-09) Fernández Mollocana, Carlos Danilo; Carrillo Rosero, Carlos Mauricio
    This research work has its origin in one of the current teaching problems, since it is absolutely necessary to develop new models for students to understand and interpret the lessons given by teachers, so that learning is fully understandable. For this reason, a test bench was developed to calculate the static and dynamic friction coefficient of certain materials (glass, steel, metal, wood and plastic). The development of the test bench was oriented on an experimental research methodology since its design is fully automated based on sensors (LM393, KY-008) and a PLC FX2N-16MR/T; main elements that allowed the development of an open loop system that responds to the needs of the test bench (determination of acceleration and friction coefficients). The data collection was established by means of five repetitions, which allowed to establish the most adjusted value to the data collected in specific bibliography. It is necessary to emphasize that the relative and absolute percentage of error of the values of both the bench and the bibliographic collection range from 5 to 10 percent of error.
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    Análisis del coeficiente de fricción e índice de inflamabilidad de un material compuesto a partir de matriz elastomérica de látex reforzado con gránulo de caucho reciclado
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Bautista Velasco, Edison Fabricio; Pérez Salinas, Cristian Fabián
    The present experimental work aims to analyze the coefficient of friction (static and dynamic) and flammability index of a composite material made from elastomeric latex matrix reinforced with recycled rubber granule. Composite specimens with volumetric composition of 60 percent Synthetic latex and 40 percent Recycled rubber granule (particle size of 0.841 mm) were made, and simple material specimens with 100 percent synthetic latex configuration were also made. In addition, aluminum molds were manufactured with the purpose of facilitating the vulcanization process required by the samples. Friction tests (Use Guide for English XL Variable Incidence Tribometer) and flammability were performed under regulations (ISO 3795). Friction tests were carried out on the two materials on three types of surfaces under dry and wet conditions, the values were taken in the 4 directions (north, south, east, west). As a result, the factor with the highest incidence on the value of static and dynamic friction coefficients is the “Condition”. In the case of the “Material” factor, the coefficients of friction of greater value were for the material with a 100 percent synthetic latex composition. While in the "Surface" factor the wood type obtained higher values compared to the other two. On the other hand, it was determined that the “Orientation” factor has no impact on the measurement of friction coefficients. Finally, material flammability tests were performed, for the composite material the burn rate had a value of 9.23 mm / min. While, for the simple material the burn rate was 7.94 mm / min.