Maestría en Mecánica Mención Diseño

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    Análisis de fiabilidad de máquinas y equipos por la ley de Weibull en el área de extrusión de la empresa Holviplas S.A. y su incidencia en la disponibilidad
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2020) Agualongo Yansapanta, Luis Rolando; Castro Miniguano, Christian Byron
    The present research "Analysis of reliability of machines and equipment by the law of Weibull in the area of extrusion of the company Holviplas S.A. and its impact on availability", has as its primary objective to determine the reliability using the mathematical and graphical method of Weibull. For the development of the analysis, statistical data of maintenance activities previously carried out were taken, which allowed us to identify, through an AMFE matrix, the most critical components or the most prone to failures. On the other hand also analyzed times mean time between failures(TMBF), average repair time (MTTR), operation time (To), the failure rate (Lamda), ideal reliability (Rt), Availability (D). Subsequently with the collected data the study of times of operation and stop of the machinery was carried out, by means of the information of the registers of maintenance, consecutively the statistical analysis was carried out to determine the reliability by means of the distribution of WEIBULL of each machine and equipment, so much with the mathematical method as the graphical method, which allowed to give a more relevant criterion, on which position of the curve of the bath are the machines and the pertinent actions that must be carried out for a process of maintenance. The research was based on the standards NTP 331 and NTP 679 for WEIBULL and AMFE analysis respectively. The software was programmed to determine reliability using the .m language of the specialised software and its GUIDE graphical interface editor. Finally, several practical applications were made to verify the correct functioning of the program, demonstrate its functionality and scope, obtaining a program that is able to calculate the parameters of the Weibull distribution, reliability values and graph with precision at the height of some commercial software , with a simple user interface.