Esperar tres a\u00f1os para confirmar una vida \u00fatil de tres a\u00f1os rara vez es aceptable. <\/p>\n\n\n\n
Los ensayos acelerados someten al producto a una tensi\u00f3n aumentada<\/strong> : temperatura, tensi\u00f3n, carga, humedad\u2026 y luego extrapolan los resultados a las condiciones normales.<\/p>\n\n\n\n
<\/figure>\n\n\n\n
Los modelos de aceleraci\u00f3n<\/strong> disponibles:<\/h2>\n\n\n\n
Fatiga mec\u00e1nica en funci\u00f3n de la amplitud de la tensi\u00f3n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Se rellena el tipo de modelo<\/strong>, la o las variables de restricci\u00f3n<\/strong>. Hay un bot\u00f3n que permite\u2019A\u00f1adir una segunda restricci\u00f3n<\/strong>, la columna de los valores de fallo<\/strong> y los censuras<\/strong>. Arrhenius pide una energ\u00eda de activaci\u00f3n<\/strong>.<\/p>\n\n\n\n<\/figure>\n\n\n\n
Los resultados muestran el\u2019ecuaci\u00f3n<\/strong> del modelo ajustado, su R2<\/strong>, el gr\u00e1fico Vida \u00fatil frente a estr\u00e9s (gr\u00e1fico logar\u00edtmico-logar\u00edtmico)<\/strong> y el factor de aceleraci\u00f3n<\/strong>.<\/p>\n\n\n\n
\n
\ud83d\udca1 El gr\u00e1fico logar\u00edtmico-logar\u00edtmico sirve para comprobar la validez: los niveles de restricci\u00f3n deben alinearse. Un punto que se desv\u00eda indica que ese nivel ha cambiado el mecanismo de fallo<\/strong> A partir de una determinada temperatura, el deterioro ya no es el mismo. Este nivel debe excluirse de la extrapolaci\u00f3n.<\/p>\n<\/blockquote>\n\n\n\n
\n
\u26a0\ufe0f Este es el principal riesgo del m\u00e9todo: Acelerar demasiado provoca otro tipo de fallo.<\/strong>, y entonces se extrapola una ley que no describe el comportamiento real del producto. Hay que ce\u00f1irse a un \u00e1mbito en el que el mecanismo sea el mismo y desconfiar de los factores de aceleraci\u00f3n muy elevados.<\/p>\n<\/blockquote>\n\n\n\n
\n
\ud83d\udca1 Planificar al menos tres niveles de restricci\u00f3n<\/strong>. Con dos puntos, se traza una recta que pasa por ambos: no hay forma de comprobar que sea recta.<\/p>\n<\/blockquote>","protected":false},"featured_media":0,"menu_order":80,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[36],"class_list":["post-4615","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-9-fiabilite"],"acf":[],"yoast_head":"\nEssais acc\u00e9l\u00e9r\u00e9s - Ellistat<\/title>\n<meta name=\"description\" content=\"Arrhenius, Eyring, Peck, Coffin-Manson : choisissez le bon mod\u00e8le d'essai acc\u00e9l\u00e9r\u00e9 pour extrapoler la dur\u00e9e de vie de vos produits sans attendre des ann\u00e9es.\" \/>\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\/ensayos-acelerados\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Essais acc\u00e9l\u00e9r\u00e9s - 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