Browsing by Author "Quishpe Villa, Christian Manuel"

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    Implementación de la metodología de Weibull para el diseño de un plan de mantenimiento preventivo en las máquinas industriales de la empresa carrocerías Jácome
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Quishpe Villa, Christian Manuel; Castro Miniguano, Byron Christian
    The maintenance plan was established with the main purpose of determining current state of industrial machines of the Company named as "CARROCERÍAS JÁCOME", as well as detailing activities that allow their proper performance. Given that the equipment of the mentioned Company is considerably new (4 years), a statistic analysis could not be established so, the AMFE matrix was used, determining the most critical component with the respective actions to reduce damage. Once data were obtained, the machine statistic was established and operating times, repair times, dead time and stop times were obtained. Using the prevention technical note NTP 331 detailed as Weibull Reliability, the data from the machine statistics is analyzed with the aim of establishing where the equipment is currently located in bathtub curve. The aforementioned reliability was determined by two ways, a constant failure rate and general formula presented in that technical note. NTP 331 shows two models to determine reliability, mathematical model and graphic model. Both models were used because when we combine this two, data correlation is greater than 0.95 points. In this way, the maintenance ranges were suitably established while meeting the Company's specific requirements.