Publicación: Monitoreo de perfiles de la intensidad de radiación absorbida por una espuma metálica
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2022
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Universidad Nacional de Educación a Distancia (España), Universidad Politécnica de Madrid. Departamento de Ingeniería Mecánica
Resumen
El control de calidad de materiales celulares mediante la combinación de mediciones no destructivas y procedimientos de monitoreo de perfiles no lineales, es utilizada para detectar posibles fallas y asegurar que se cumple con los requerimientos establecidos del material. Perfiles de intensidad de radiación absorbida por una espuma metálica AlSi10 son obtenidos mediante mediciones con radiación gamma y utilizados como indicadores de su estructura interna porque su forma está relacionada al perfil de densidad del material y a sus propiedades mecánicas. El objetivo de este trabajo es proponer una metodología basada en la modelación de estos perfiles mediante regresión de soporte vectorial y la determinación de métricas que posibiliten el diseño de un gráfico EWMA para rangos; la idea es identificar problemas que registren los perfiles, producto de un cambio en la distribución de su densidad. El diseño de los gráficos es para fase I de control estadístico, mostrando alcanzar un buen desempeño, medido mediante ARL0.
The quality control of cellular materials by means of the combination of non-destructive measurements and monitoring procedures for non-linear profiles is used to detect possible failures and ensure the compliance of said materials with the established requirements. Profiles of the intensity of the radiation absorbed by a metallic sponge AlSi10 are obtained by measurements with gamma radiation and used as indicators of its internal structure because its form is related to the density profile of the material and to its mechanical properties. The objective of this work is to propose a methodology based on the modelling of said profiles through support vector regression and the determination of metrics that allow the EWMA control charts design based on ranks; the idea is to identify problems registered by the profiles caused by a change in the distribution of its density. The design of the charts is for a phase I study, reaching good performance measured by ARL0.
The quality control of cellular materials by means of the combination of non-destructive measurements and monitoring procedures for non-linear profiles is used to detect possible failures and ensure the compliance of said materials with the established requirements. Profiles of the intensity of the radiation absorbed by a metallic sponge AlSi10 are obtained by measurements with gamma radiation and used as indicators of its internal structure because its form is related to the density profile of the material and to its mechanical properties. The objective of this work is to propose a methodology based on the modelling of said profiles through support vector regression and the determination of metrics that allow the EWMA control charts design based on ranks; the idea is to identify problems registered by the profiles caused by a change in the distribution of its density. The design of the charts is for a phase I study, reaching good performance measured by ARL0.
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Categorías UNESCO
Palabras clave
monitoreo de perfiles, gráficos I, gráfico EWMA, máquinas de soporte de regresión, métricas, rangos
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Centro
E.T.S. de Ingenieros Industriales
Departamento
Mecánica