Selección óptima de proveedores mediante análisis de confiabilidad y costos basado en la distribución de Weibull aplicado al sector automotor
DOI:
https://doi.org/10.26439/ing.ind2026.n50.8672Palabras clave:
distribución Weibull, selección de proveedores, tiempo medio entre fallas, confiabilidad, parámetro de forma, parámetro de escalaResumen
Se presenta la aplicación de la distribución Weibull de dos parámetros al caso de evaluar tres proveedores para determinar cuál de ellos es el mejor. Con base en 20 tiempos de falla de cada proveedor, se estiman los parámetros de forma y escala de Weibull mediante el uso de rangos medios para dos proveedores y rangos medianos para el otro, en función de la opción que produjo el mejor ajuste mediante regresión por mínimos cuadrados; con ello, se estima el tiempo medio entre fallas (MTBF, horas) y la confiabilidad de cada proveedor, para finalmente cuantificar el costo anual en pesos por el consumo de componentes. Se concluye que el mejor proveedor es el segundo, al obtener el mayor MTBF, con 384,6 horas, superando al proveedor 1 en un 28,5 % y al proveedor 3 en un 24,2 %. Asimismo, presenta el menor costo anual de $ 27 579, a pesar de que su precio unitario es mayor.
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