Maestría en Mecánica Mención Diseño
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Item Diseño de la estructura del autobus interprovincial modelo IM9 sobre chasis Mercedes Benz 0500 RS 1836 de Miral Autobuses en base a la seguridad al vuelco(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2020) Atacusí Hidalgo, Braulio Patricio; Arroba Arroba, Cesar HernánIn our country, there are some problems in the coach sector related to the manufacture of buses, among which are high weight and low resistance to rollover, which has resulted in high mortality rates in traffic accidents. Taking as reference previous studies, based on research carried out worldwide, national and international regulations, the current structure of the bus for interprovincial service IM9 on Mercedes Benz O500 RS 1836 chassis of Miral Autobuses, was based on the theory and the finite element method with the analysis software Ansys, which was validated by a physical rollover test of the most critical section of the structure in accordance with the provisions of Regulation 66 of the United Nations, the structure was modified with the material that the company currently uses, identifying oversized segments, by varying the thickness, its weight was reduced without forgetting rollover resistance, reliable results were achieved to ensure the quality and safety of the products manufactured by Miral Autobuses. It was determined by an adequate design, at specific points of the bus structure reducing its weight always keeping in mind the most important aspect, the conservation of lives, which translates into the fact that the passenger survival zone is never invaded during a rollover accident. After having done the research, it is recommended to work on composite materials for the body components, which can reduce weight in order to be more competitive in comparison to other bus body builders that are selling its products in our country, in the future, we will sell our buses in international markets.Item Análisis de la influencia de las pruebas tecnológicas sobre las propiedades mecánicas de compuestos de resina polimérica reforzado con fibras naturales del Ecuador bajo norma ASTM(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2019) Salán Guevara, Luis Geovanny; Analuiza Maiza, Oscar IvánThis document responds to an investigative work, against the lack of knowledge of the degree of degradation of composites in the open air, for this purpose the study of the influence of UV radiation and humidity, considered as technological tests, on the mechanical properties of tensile and flexion in two types of composite materials, one with a matrix of polyester resin and reinforcement of cabuya fiber and the other with the same matrix of the previous one with banana fiber reinforcement, under ASTM regulations. In order to determine the percentage of humidity and UV affectation in the aforementioned composite materials, by comparing their properties and determining which one offers better anti-degrading benefits to technological tests, tensile and flexural tests were carried out in the pre and post phases exposure to them. From the experimental treatment of the data obtained, conclusions are established that determine that the composite with better characteristics to resist technological tests is one that uses banana reinforcement. Subsequently, it was validated its use within the automotive industry - body supported by the analysis of finite elements performed by the specialized software intermediary, determining that its ideal application is for internal cover for bus roofs.