Ingeniería Civil y Mecánica
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Item Determinación de la resistencia de la junta traslapada simple, entre el acero estructural, resina epóxica y fibra de carbono unidireccional, utilizando métodos de limpieza superficial alternativos(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2023) Escobar Altamirano, Jordi Javier; Peña Jordán, Francisco AgustínSandblasting is a cleaning and texturing process based on the projection of an abrasive material on a surface, with a wide industrial use in oxide, impurities and dirt removal processes. However, it is an operation with certain disadvantages, such as its high cost, high waste generation and risk to the health of operators. It was investigated that there is a directly proportional relationship between roughness and the maximum shear stress that an adhesive bond can withstand. Since this technique has given one of the best results, alternative methods such as a steel bristle disc at 2300 rpm and rectangular sander equipped with a 30 grade sandpaper were used in order to obtain similar data. This was developed on A36 structural steel and unidirectional carbon fiber specimens, sized according to ASTM D1002 and bonded with epoxy resin in a simple overlapped joint. The results were obtained by applying tensile tests, obtaining a better result in the specimens treated with steel bristle disc, obtaining average values of 10.522 micrometers in roughness, 8262.5 N in maximum force and 9.6 MPa in maximum shear stress. When comparing and applying a parametric statistical test between the results obtained with the information obtained from previous research, it was found that there is no significant difference between the two techniques.