{"id":79,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/coastdown\/"},"modified":"2026-05-23T23:07:52","modified_gmt":"2026-05-23T23:07:52","slug":"coastdown","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/coastdown\/","title":{"rendered":"O que \u00e9 o conceito de &quot;coasdown&quot; na an\u00e1lise de m\u00e1quinas rotativas?"},"content":{"rendered":"<h1>Compreender a desacelera\u00e7\u00e3o na an\u00e1lise de m\u00e1quinas rotativas<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Grande plano do sensor de vibra\u00e7\u00e3o Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensor \u00f3tico (tac\u00f3metro laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Base magn\u00e9tica.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a 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woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Fita refletora\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/79?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Desacelera\u00e7\u00e3o livre<\/strong> \u2014 tamb\u00e9m conhecido como desacelera\u00e7\u00e3o \u2014 \u00e9 o processo de deixar uma m\u00e1quina rotativa abrandar da velocidade de funcionamento at\u00e9 parar, sem travagem ativa, recorrendo \u00e0s perdas naturais decorrentes do atrito, do atrito do ar e do atrito dos rolamentos. Em <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-dynamics\/\">din\u00e2mica do rotor<\/a> e <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a>, uma desacelera\u00e7\u00e3o por in\u00e9rcia <em>teste<\/em> \u00e9 um procedimento de diagn\u00f3stico no qual <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> os dados s\u00e3o registados continuamente \u00e0 medida que a m\u00e1quina desacelera, fornecendo informa\u00e7\u00f5es detalhadas sobre <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/critical-speed\/\">velocidades cr\u00edticas<\/a>, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/natural-frequency\/\">frequ\u00eancias naturais<\/a>, e o car\u00e1ter din\u00e2mico do sistema. Juntamente com a sua imagem espelhada, o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/runup\/\">acelera\u00e7\u00e3o<\/a> Este teste constitui uma ferramenta fundamental para a coloca\u00e7\u00e3o em servi\u00e7o de novos equipamentos, a resolu\u00e7\u00e3o de problemas de vibra\u00e7\u00e3o persistentes e a valida\u00e7\u00e3o de modelos rotodin\u00e2micos em rela\u00e7\u00e3o \u00e0 m\u00e1quina tal como foi efetivamente constru\u00edda e instalada.<\/p>\n<h2>1. Objetivo e aplica\u00e7\u00f5es<\/h2>\n<h3>Identifica\u00e7\u00e3o da velocidade cr\u00edtica<\/h3>\n<p>A principal finalidade dos ensaios de desacelera\u00e7\u00e3o \u00e9 determinar as velocidades cr\u00edticas:<\/p>\n<ul>\n<li>\u00e0 medida que a velocidade desce por cada velocidade cr\u00edtica, a amplitude da vibra\u00e7\u00e3o atinge o seu m\u00e1ximo;<\/li>\n<li>picos no <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/amplitude\/\">amplitude<\/a>o gr\u00e1fico em fun\u00e7\u00e3o da velocidade marca as velocidades cr\u00edticas;<\/li>\n<li>uma altera\u00e7\u00e3o concomitante de 180\u00b0 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/phase\/\">fase<\/a> o deslocamento confirma que se trata de resson\u00e2ncia verdadeira <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/resonance\/\">resson\u00e2ncia<\/a> em vez de outro efeito relacionado com a velocidade; e<\/li>\n<li>\u00c9 poss\u00edvel registar v\u00e1rias velocidades cr\u00edticas num \u00fanico ensaio.<\/li>\n<\/ul>\n<h3>Medi\u00e7\u00e3o da frequ\u00eancia natural<\/h3>\n<p>As velocidades cr\u00edticas correspondem \u00e0s frequ\u00eancias naturais:<\/p>\n<ul>\n<li>a primeira velocidade cr\u00edtica ocorre na primeira frequ\u00eancia natural, a segunda na segunda, e assim por diante;<\/li>\n<li>o teste confirma experimentalmente as previs\u00f5es anal\u00edticas; e<\/li>\n<li>\u00e9 amplamente utilizado para validar modelos de elementos finitos.<\/li>\n<\/ul>\n<h3>Determina\u00e7\u00e3o do amortecimento<\/h3>\n<p>A nitidez de cada pico de resson\u00e2ncia revela o sistema <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/damping\/\">amortecimento<\/a>:<\/p>\n<ul>\n<li>picos agudos e altos indicam baixo amortecimento;<\/li>\n<li>picos largos e baixos indicam um elevado amortecimento;<\/li>\n<li>a <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/damping-ratio-calculator\/\">r\u00e1cio de amortecimento<\/a> pode ser calculado a partir da largura e da amplitude do pico; e<\/li>\n<li>esse valor \u00e9 fundamental para prever os n\u00edveis de vibra\u00e7\u00e3o durante o funcionamento futuro.<\/li>\n<\/ul>\n<h3>Avalia\u00e7\u00e3o da distribui\u00e7\u00e3o do desequil\u00edbrio<\/h3>\n<ul>\n<li>as rela\u00e7\u00f5es de fase \u00e0s velocidades cr\u00edticas revelam como o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">desequil\u00edbrio<\/a> est\u00e1 distribu\u00eddo ao longo do rotor;<\/li>\n<li>eles conseguem distinguir o est\u00e1tico do <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/couple-unbalance\/\">desequil\u00edbrio de bin\u00e1rio<\/a>; e<\/li>\n<li>ajudam a planear a estrat\u00e9gia de equil\u00edbrio antes de se adicionar qualquer peso.<\/li>\n<\/ul>\n<h2>2. Procedimento de teste de desacelera\u00e7\u00e3o por in\u00e9rcia<\/h2>\n<h3>Prepara\u00e7\u00e3o<\/h3>\n<ol>\n<li><strong>Instalar sensores:<\/strong> Coloque <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/accelerometer\/\">aceler\u00f3metros<\/a> ou <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/velocity-transducer\/\">transdutores de velocidade<\/a> nas chumaceiras, tanto na dire\u00e7\u00e3o horizontal como na vertical.<\/li>\n<li><strong>Instalar um tac\u00f3metro:<\/strong> \u00f3ptico ou magn\u00e9tico <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/tachometer\/\">tac\u00f3metro<\/a> para monitorizar a velocidade de rota\u00e7\u00e3o e fornecer a refer\u00eancia de fase.<\/li>\n<li><strong>Configurar a aquisi\u00e7\u00e3o de dados:<\/strong> configure a grava\u00e7\u00e3o cont\u00ednua com uma frequ\u00eancia de amostragem adequada.<\/li>\n<li><strong>Defina o intervalo de velocidade:<\/strong> normalmente desde a velocidade de funcionamento at\u00e9 10\u201320 % dessa velocidade, ou at\u00e9 a m\u00e1quina parar.<\/li>\n<\/ol>\n<h3>Execu\u00e7\u00e3o<\/h3>\n<ol>\n<li><strong>Estabilizar \u00e0 velocidade de funcionamento:<\/strong> funcionar a velocidade normal at\u00e9 se atingir o equil\u00edbrio t\u00e9rmico e uma vibra\u00e7\u00e3o est\u00e1vel.<\/li>\n<li><strong>Iniciar desacelera\u00e7\u00e3o por in\u00e9rcia:<\/strong> desligue a alimenta\u00e7\u00e3o do acionamento \u2014 motor, turbina ou outro motor prim\u00e1rio \u2014 e deixe que a desacelera\u00e7\u00e3o ocorra naturalmente.<\/li>\n<li><strong>Monitorizar continuamente:<\/strong> registar a amplitude, a fase e a velocidade da vibra\u00e7\u00e3o ao longo de toda a desacelera\u00e7\u00e3o.<\/li>\n<li><strong>Preste aten\u00e7\u00e3o \u00e0 seguran\u00e7a:<\/strong> esteja atento a vibra\u00e7\u00f5es excessivas que possam indicar uma resson\u00e2ncia inesperada ou <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-instability\/\">instabilidade<\/a>.<\/li>\n<li><strong>Desacelera\u00e7\u00e3o total:<\/strong> continue a registar at\u00e9 que a m\u00e1quina pare ou atinja a velocidade m\u00ednima pretendida.<\/li>\n<\/ol>\n<h3>Par\u00e2metros de recolha de dados<\/h3>\n<ul>\n<li><strong>Taxa de amostragem:<\/strong> suficientemente alta para captar todas as frequ\u00eancias de interesse \u2014 normalmente 10 a 20 vezes a frequ\u00eancia m\u00e1xima.<\/li>\n<li><strong>Dura\u00e7\u00e3o:<\/strong> determinado pela in\u00e9rcia do rotor, variando entre 30 segundos e 10 minutos.<\/li>\n<li><strong>Medi\u00e7\u00f5es:<\/strong> amplitude, fase e velocidade em todos os pontos de medi\u00e7\u00e3o.<\/li>\n<li><strong>Amostragem s\u00edncrona:<\/strong> dados recolhidos em incrementos angulares constantes para apoiar <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/order-analysis\/\">an\u00e1lise de ordens<\/a>.<\/li>\n<\/ul>\n<h2>3. An\u00e1lise e visualiza\u00e7\u00e3o de dados<\/h2>\n<h3>Diagrama de Bode<\/h3>\n<p>A visualiza\u00e7\u00e3o padr\u00e3o dos dados de desacelera\u00e7\u00e3o \u00e9 a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bode-plot\/\">Diagrama de Bode<\/a>:<\/p>\n<ul>\n<li><strong>tra\u00e7o superior:<\/strong> amplitude da vibra\u00e7\u00e3o em fun\u00e7\u00e3o da velocidade;<\/li>\n<li><strong>tra\u00e7o inferior:<\/strong> \u00e2ngulo de fase em fun\u00e7\u00e3o da velocidade;<\/li>\n<li><strong>Assinatura da velocidade cr\u00edtica:<\/strong> um pico de amplitude com a respetiva desfasagem de 180\u00b0; e<\/li>\n<li><strong>por local:<\/strong> gr\u00e1ficos separados para cada ponto de medi\u00e7\u00e3o e dire\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>Gr\u00e1fico em cascata<\/h3>\n<p>A <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/waterfall-plot\/\">gr\u00e1fico em cascata<\/a> (diagrama em cascata) apresenta uma vis\u00e3o tridimensional:<\/p>\n<ul>\n<li>Eixo X: frequ\u00eancia (Hz ou ordens);<\/li>\n<li>Eixo Y: velocidade (rpm);<\/li>\n<li>Eixo Z (cor): amplitude da vibra\u00e7\u00e3o;<\/li>\n<li><strong>o componente 1\u00d7<\/strong> aparece como uma linha diagonal que indica a velocidade;<\/li>\n<li><strong>frequ\u00eancias naturais<\/strong> aparecem como linhas horizontais a uma frequ\u00eancia constante; e<\/li>\n<li><strong>a sua intersec\u00e7\u00e3o<\/strong> \u2014 onde a linha 1\u00d7 cruza uma linha de frequ\u00eancia natural \u2014 \u00e9 uma velocidade cr\u00edtica.<\/li>\n<\/ul>\n<h3>Gr\u00e1fico Polar<\/h3>\n<ul>\n<li>os vetores de vibra\u00e7\u00e3o s\u00e3o representados graficamente para v\u00e1rias velocidades;<\/li>\n<li>forma-se uma espiral caracter\u00edstica \u00e0 medida que a velocidade diminui ao passar por cada velocidade cr\u00edtica; e<\/li>\n<li>A mudan\u00e7a de fase \u00e9 claramente vis\u00edvel \u00e0 medida que o vetor se desloca.<\/li>\n<\/ul>\n<h2>4. Testes de desacelera\u00e7\u00e3o vs. testes de acelera\u00e7\u00e3o<\/h2>\n<h3>Vantagens da desacelera\u00e7\u00e3o livre<\/h3>\n<ul>\n<li><strong>N\u00e3o \u00e9 necess\u00e1ria alimenta\u00e7\u00e3o externa:<\/strong> basta desligar o accionamento e deixar a m\u00e1quina travar por in\u00e9rcia.<\/li>\n<li><strong>Desacelera\u00e7\u00e3o mais lenta:<\/strong> Um tempo de perman\u00eancia mais longo em cada velocidade proporciona uma melhor resolu\u00e7\u00e3o de frequ\u00eancia.<\/li>\n<li><strong>Mais seguro:<\/strong> o sistema est\u00e1 a perder energia em vez de a ganhar.<\/li>\n<li><strong>Menos stress:<\/strong> As velocidades cr\u00edticas s\u00e3o ultrapassadas \u00e0 medida que a energia diminui.<\/li>\n<\/ul>\n<h3>Vantagens da acelera\u00e7\u00e3o (runup)<\/h3>\n<ul>\n<li><strong>Acelera\u00e7\u00e3o controlada:<\/strong> \u00e9 poss\u00edvel controlar a taxa de passagem pelas velocidades cr\u00edticas.<\/li>\n<li><strong>Parte do processo normal de arranque:<\/strong> um <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/run-up-analysis\/\">an\u00e1lise de arranque<\/a> podem ser recolhidos durante um arranque de rotina.<\/li>\n<li><strong>Condi\u00e7\u00f5es ativas:<\/strong> existem cargas de processo, pelo que os dados s\u00e3o mais representativos do funcionamento real.<\/li>\n<\/ul>\n<h3>Considera\u00e7\u00f5es de compara\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Temperatura:<\/strong> A acelera\u00e7\u00e3o \u00e9 normalmente realizada a frio; a desacelera\u00e7\u00e3o come\u00e7a a partir de condi\u00e7\u00f5es de funcionamento a quente.<\/li>\n<li><strong>Rigidez da chumaceira:<\/strong> Pode variar entre temperaturas altas (desacelera\u00e7\u00e3o) e baixas (acelera\u00e7\u00e3o).<\/li>\n<li><strong>Atrito e amortecimento:<\/strong> ambos dependem da temperatura e alteram as amplitudes de pico.<\/li>\n<li><strong>Compara\u00e7\u00e3o de dados:<\/strong> As diferen\u00e7as entre as curvas de acelera\u00e7\u00e3o e de desacelera\u00e7\u00e3o podem, por si s\u00f3, revelar efeitos t\u00e9rmicos ou decorrentes da carga.<\/li>\n<\/ul>\n<h2>5. Aplica\u00e7\u00f5es e casos de utiliza\u00e7\u00e3o<\/h2>\n<h3>Coloca\u00e7\u00e3o em funcionamento de equipamento novo<\/h3>\n<ul>\n<li>verificar se as velocidades cr\u00edticas correspondem \u00e0s previs\u00f5es de projeto;<\/li>\n<li>confirmar que as margens de separa\u00e7\u00e3o s\u00e3o adequadas;<\/li>\n<li>validar o modelo rotordin\u00e2mico; e<\/li>\n<li>estabelecer <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/baseline-data\/\">dados de base<\/a> para refer\u00eancia futura.<\/li>\n<\/ul>\n<h3>Solu\u00e7\u00e3o de problemas de vibra\u00e7\u00e3o<\/h3>\n<ul>\n<li>determinar se a vibra\u00e7\u00e3o elevada est\u00e1 relacionada com a velocidade (uma resson\u00e2ncia);<\/li>\n<li>descobrir velocidades cr\u00edticas at\u00e9 agora desconhecidas;<\/li>\n<li>avaliar o efeito de uma modifica\u00e7\u00e3o ou repara\u00e7\u00e3o; e<\/li>\n<li>distinguir a resson\u00e2ncia de outras fontes de vibra\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>Procedimentos de balanceamento<\/h3>\n<ul>\n<li>para <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/flexible-rotor\/\">rotores flex\u00edveis<\/a>, o coastdown identifica quais os modos que necessitam de balanceamento;<\/li>\n<li>ajuda a escolher as velocidades de balanceamento adequadas; e<\/li>\n<li>verifica a melhoria ap\u00f3s <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/modal-balancing\/\">equil\u00edbrio modal<\/a>.<\/li>\n<\/ul>\n<h3>Verifica\u00e7\u00e3o de Modifica\u00e7\u00e3o<\/h3>\n<ul>\n<li>ap\u00f3s a substitui\u00e7\u00e3o dos rolamentos, verifique a altera\u00e7\u00e3o da velocidade cr\u00edtica resultante;<\/li>\n<li>ap\u00f3s altera\u00e7\u00f5es na massa ou na rigidez, verifique a varia\u00e7\u00e3o prevista na frequ\u00eancia natural; e<\/li>\n<li>comparar as desacelera\u00e7\u00f5es antes e depois para quantificar a melhoria.<\/li>\n<\/ul>\n<h2>6. Melhores pr\u00e1ticas para testes de desacelera\u00e7\u00e3o<\/h2>\n<h3>Considera\u00e7\u00f5es de seguran\u00e7a<\/h3>\n<ul>\n<li>certifique-se de que todas as pessoas nas proximidades sabem que o teste est\u00e1 a decorrer;<\/li>\n<li>esteja atento \u00e0s vibra\u00e7\u00f5es para detectar resson\u00e2ncias inesperadas;<\/li>\n<li>manter dispon\u00edvel uma fun\u00e7\u00e3o de desligamento de emerg\u00eancia;<\/li>\n<li>limpar a \u00e1rea em redor do equipamento; e<\/li>\n<li>Se se verificar uma vibra\u00e7\u00e3o excessiva, considere efetuar uma paragem de emerg\u00eancia em vez de deixar a m\u00e1quina desacelerar por in\u00e9rcia.<\/li>\n<\/ul>\n<h3>Qualidade de dados<\/h3>\n<ul>\n<li><strong>Taxa de desacelera\u00e7\u00e3o correta:<\/strong> nem t\u00e3o r\u00e1pido que haja poucos pontos de dados por velocidade, nem t\u00e3o lento que as condi\u00e7\u00f5es t\u00e9rmicas se alterem durante o teste.<\/li>\n<li><strong>Condi\u00e7\u00f5es est\u00e1veis:<\/strong> minimizar as varia\u00e7\u00f5es das vari\u00e1veis do processo durante o teste.<\/li>\n<li><strong>Corridas m\u00faltiplas:<\/strong> efetue duas ou tr\u00eas desacelera\u00e7\u00f5es por in\u00e9rcia para verificar a repetibilidade.<\/li>\n<li><strong>Todas as localiza\u00e7\u00f5es de uma s\u00f3 vez:<\/strong> registar todos os rolamentos simultaneamente.<\/li>\n<\/ul>\n<h3>Documenta\u00e7\u00e3o<\/h3>\n<ul>\n<li>registar as condi\u00e7\u00f5es de funcionamento \u2014 temperatura, carga, configura\u00e7\u00e3o;<\/li>\n<li>captar todos os dados relativos \u00e0 vibra\u00e7\u00e3o e \u00e0 velocidade;<\/li>\n<li>Gere gr\u00e1ficos de an\u00e1lise padr\u00e3o (Bode, cascata, polar)<\/li>\n<li>identificar e assinalar todas as velocidades cr\u00edticas encontradas; e<\/li>\n<li>comparar com as previs\u00f5es do projeto ou com dados de testes anteriores e, em seguida, arquiv\u00e1-lo.<\/li>\n<\/ul>\n<h2>7. Interpreta\u00e7\u00e3o dos resultados<\/h2>\n<h3>Identificando velocidades cr\u00edticas<\/h3>\n<ul>\n<li>procure picos de amplitude no gr\u00e1fico de Bode;<\/li>\n<li>confirmar cada uma com o seu desfasamento de 180\u00b0;<\/li>\n<li>repare na velocidade a que o pico ocorre; e<\/li>\n<li>calcular a margem de seguran\u00e7a em rela\u00e7\u00e3o \u00e0 velocidade de funcionamento.<\/li>\n<\/ul>\n<h3>Avalia\u00e7\u00e3o da severidade<\/h3>\n<ul>\n<li><strong>Amplitude de pico:<\/strong> At\u00e9 que n\u00edvel a vibra\u00e7\u00e3o atinge na velocidade cr\u00edtica?<\/li>\n<li><strong>Nitidez do pico:<\/strong> Um pico acentuado indica um baixo amortecimento e um potencial problema.<\/li>\n<li><strong>Proximidade de funcionamento:<\/strong> A que ponto a velocidade de opera\u00e7\u00e3o se aproxima de uma velocidade cr\u00edtica?<\/li>\n<li><strong>Aceitabilidade:<\/strong> normalmente, \u00e9 necess\u00e1ria uma margem de separa\u00e7\u00e3o de cerca de \u00b115\u201320 %.<\/li>\n<\/ul>\n<h3>An\u00e1lise Avan\u00e7ada<\/h3>\n<ul>\n<li>extrair <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/mode-shape\/\">formas modais<\/a> a partir de medi\u00e7\u00f5es multiponto;<\/li>\n<li>calcular os coeficientes de amortecimento a partir das caracter\u00edsticas de pico;<\/li>\n<li>distinguir os modos diretos dos modos retr\u00f3grados <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/whirl\/\">precess\u00e3o<\/a> modos; e<\/li>\n<li>comparar os resultados com <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/campbell-diagram\/\">Diagrama de Campbell<\/a> previs\u00f5es.<\/li>\n<\/ul>\n<h2>8. Desacelera\u00e7\u00e3o no terreno<\/h2>\n<p>No local, uma desacelera\u00e7\u00e3o por in\u00e9rcia n\u00e3o requer um banco de ensaio espec\u00edfico \u2014 pode ser registada com um instrumento port\u00e1til no momento em que o variador \u00e9 desligado. Um analisador de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a>, com o seu tac\u00f3metro a laser a fornecer a refer\u00eancia de fase, regista continuamente a amplitude, a fase e a velocidade \u00e0 medida que o rotor abranda, permitindo que o engenheiro identifique os picos de velocidade cr\u00edtica diretamente no diagrama de Bode resultante. O mesmo conjunto de dados que localiza uma resson\u00e2ncia tamb\u00e9m confirma se um desequil\u00edbrio de 1\u00d7 est\u00e1 a contribuir, permitindo que o diagn\u00f3stico e o acompanhamento <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-de-campos\/\">equilibragem no local<\/a> fluxo de trabalho a partir de um \u00fanico teste de desacelera\u00e7\u00e3o. Em suma, os testes de desacelera\u00e7\u00e3o fornecem dados emp\u00edricos que complementam as previs\u00f5es anal\u00edticas e revelam o comportamento din\u00e2mico real das m\u00e1quinas rotativas em condi\u00e7\u00f5es reais de funcionamento.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre a desacelera\u00e7\u00e3o gradual, o processo de parada for\u00e7ada de m\u00e1quinas rotativas usado para identificar velocidades cr\u00edticas, frequ\u00eancias naturais e caracter\u00edsticas din\u00e2micas do rotor por meio da an\u00e1lise de vibra\u00e7\u00e3o.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-79","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/79","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/79\/revisions"}],"predecessor-version":[{"id":101473,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/79\/revisions\/101473"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}