Examinando por Materia "Prototipo mecánico"
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- PublicaciónAcceso abiertoCalibración y puesta en marcha de un prototipo de máquina a flexión para el apoyo a la enseñanza aprendizaje de la mecánica de materiales(Universidad de Ibagué, 2018) Bautista Lozada, Jeissy Lizeth; Méndez Roa, Yury Andrea; Montoya Vallecilla, Jorge OlmedoIn this paper, we present the calibration results of a bending machine prototype, designed and constructed for bending beam failure, in accordance with the INV E 2012 regulation. In the calibration process, test beams of different flexural strengths were failed, both in the prototype and in the calibrated machine. From the resistance to compression of concrete cylinders after 7 and 14 days of curing, the cracking stresses of the obtained resistances were calculated and a comparative analysis was made with the crack modules obtained for the prototype and the calibrated machine. The results obtained indicate that the prototype shows values of cracking modules between 96% and 97% of those obtained with the calibrated machine and that it is therefore a good alternative at low cost for use as a support tool for teaching in the area of structures in the Civil engineering department of Universidad de Ibagué.
- PublicaciónAcceso abiertoCalibración y puesta en marcha de un prototipo mecánico para ensayo de probetas de materiales dúctiles a tracción(Universidad de Ibagué., 2019) Chávez Marroquín, Liby Daniela; Barragán Pacheco, Álvaro; Montoya Vallecilla, Jorge OlmedoIn the present document, the results obtained when testing metal specimens in traction in a constructed prototype are described and the data compared with those obtained with the same procedure in a properly calibrated machine. Test pieces of aluminum, copper, bronze brass and aluminum steel were tested. , in accordance with the ASTM E8 / E8M regulation. In the failure process, five specimens were used for each material, both in the prototype and in the properly calibrated machine. The percentages of maximum forces, failure force, maximum stress and failure stress of the specimens were calculated and compared between the two machines and it was determined that the prototype and the calibrated machine reach similarity values between 92% and 94%. Based on the results obtained, it is concluded that the prototype is a good alternative as a support instrument in laboratory tests in the Materials Mechanics subject.
- PublicaciónAcceso abiertoConstrucción y puesta en marcha de tres prototipos de máquina de compresión como apoyo a los laboratorios de mecánica de materiales en el programa de Ingeniería Civil(Universidad de Ibagué, 2019) Cardona Montes, Daniela; Montoya Vallecilla, Jorge OlmedoThis document shows the results of calibration of a prototype of compression machine, designed and built for failure of mortar cylinders, in accordance with the regulation INV E 2012. In the process, 14 and 28 days of curing specimens were used, and they were tested both in the prototype and in the calibrated machine. Based on the results obtained, the cracking stresees of tested specimens were calculated and a comparative analysis was made for the prototype and the calibrated machine. As a result, it was determined that the prototype indicates values between 97% and 98% of similarity compared to the calibrated machine. With the above it is concluded that the reliability of the results allows the prototype to be used as a support instrument for laboratory practices in Mechanics of Materials course.