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Confiabilidad en Dispositivos Médicos

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Confiabilidad en Dispositivos Médicos

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Evalúa fiabilidad con Weibull y Lognormal

Created by

Daniel Cruz
Daniel Cruz
Costa Rica

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Confiabilidad en Dispositivos Médicos
 

Confiabilidad en Dispositivos MédicosOnline version

Evalúa fiabilidad con Weibull y Lognormal

by Daniel Cruz
1

La confiabilidad se estima a partir de la función de supervivencia o de la probabilidad de fallo complementaria.

2

La distribución normal es la más adecuada para modelar todos los fallos de dispositivos médicos.

3

Weibull solo se usa para fallos instantáneos y no permite interpretar envejecimiento.

4

La distribución de Weibull se utiliza para modelar fallas cuyo ritmo cambia con el tiempo.

5

Weibull y lognormal no pueden coexistir en ningún análisis de confiabilidad.

6

La distribución lognormal no tiene cola y por ello no es útil para colas largas de fallo.

7

La distribución lognormal puede describir fallos por procesos de fatiga en dispositivos médicos.

8

En análisis de confiabilidad no se utilizan gráficos de probabilidad para evaluar ajuste de datos.

9

Se pueden comparar distribuciones con pruebas de Bondad de Ajuste como Kolmogorov-Smirnov o Anderson-Darling.

10

La forma de Weibull (parámetro beta) indica envejecimiento cuando es mayor que 1.

 
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