{"id":4602,"date":"2026-08-12T14:46:57","date_gmt":"2026-08-12T12:46:57","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=4602"},"modified":"2026-08-12T14:46:57","modified_gmt":"2026-08-12T12:46:57","slug":"calculo-de-fiabilidad","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/es\/guide-dutilisateur\/calcul-de-fiabilite\/","title":{"rendered":"C\u00e1lculo de fiabilidad"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Estas calculadoras responden a la pregunta del contrato:&nbsp;<strong>\u00bfCu\u00e1ntas unidades y cu\u00e1nto tiempo se necesitan para demostrar la fiabilidad anunciada?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se rellena el&nbsp;<strong>fiabilidad por demostrar<\/strong>&nbsp;o el&nbsp;<strong>MTTF por demostrar<\/strong>el&nbsp;<strong>nivel de confianza<\/strong>, y la&nbsp;<strong>ley de fiabilidad te\u00f3rica que hay que tener en cuenta<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dise\u00f1o del plan de pruebas<\/strong>\u00a0: demostrar un nivel de fiabilidad; ;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Permite calcular un resultado (donde se coloca el candado) en funci\u00f3n de los dem\u00e1s par\u00e1metros. Por ejemplo, se calcula que, para demostrar una fiabilidad de 90% a 1000 ciclos con un nivel de confianza del 95%, deben producirse 0 fallos en 16 productos durante 2000 ciclos.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"450\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite.png\" alt=\"\" class=\"wp-image-4604\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite.png 964w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite-300x140.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite-768x359.png 768w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite-18x8.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dise\u00f1o del plano Chi2<\/strong>\u00a0: demostrar la fiabilidad mediante el recuento de las horas de funcionamiento. Bas\u00e1ndose en la ley del Chi2, determina el n\u00famero de pruebas acumuladas necesarias; ;<\/li>\n\n\n\n<li><strong>Dise\u00f1o del plan MTTF<\/strong>\u00a0: demostrar un valor de MTTF; ;<\/li>\n\n\n\n<li>\u00a0<strong>Tiempo de fallo<\/strong>\u00a0: el tiempo de prueba necesario para que se produzca el fallo de k productos. Por ejemplo, si un producto sigue una ley de Weibull con beta = 1 y se espera una tasa de fiabilidad de 90% en t = 100, Ellistat calcula el eta correspondiente, que es 968 (el candado = resultado), y la curva indica el tiempo necesario para que se produzcan los fallos en funci\u00f3n del n\u00famero de productos sometidos a prueba (en este caso, 29).\u00a0<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"540\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite2.png\" alt=\"\" class=\"wp-image-4605\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite2.png 964w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite2-300x168.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite2-768x430.png 768w, https:\/\/ellistat.com\/wp-content\/uploads\/fiabilite2-18x10.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f El plan Chi2\u00a0<strong>supone una ley exponencial<\/strong>, es decir, \u03b2 = 1, por lo que la tasa de fallos es constante. Se trata de una hip\u00f3tesis fuerte: si tu producto se desgasta (\u03b2 &gt; 1), el plan es optimista. La aplicaci\u00f3n lo se\u00f1ala expl\u00edcitamente. \u00dasala solo en un r\u00e9gimen de fallos aleatorios o conociendo el sesgo.<\/p>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udca1 La lecci\u00f3n habitual que nos ense\u00f1an estas calculadoras es clara: para demostrar una alta fiabilidad con un alto grado de confianza se requiere\u00a0<strong>mucho<\/strong>\u00a0de unidades-hora. Es un buen argumento para negociar, ya sea una prueba acelerada o un compromiso m\u00e1s realista, y el momento adecuado para hacerlo es antes de la firma.<\/p>\n<\/blockquote>","protected":false},"featured_media":0,"menu_order":30,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[36],"class_list":["post-4602","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-9-fiabilite"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Calcul de fiabilit\u00e9 - Ellistat<\/title>\n<meta name=\"description\" content=\"Calculez le nombre d&#039;unit\u00e9s et la dur\u00e9e d&#039;essai pour d\u00e9montrer une fiabilit\u00e9 ou un MTTF cible, avec les plans Chi2, MTTF et temps de d\u00e9faillance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ellistat.com\/es\/guia-del-usuario\/calculo-de-fiabilidad\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calcul de fiabilit\u00e9 - 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