{"id":58,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/blade-resonance\/"},"modified":"2026-05-23T22:55:42","modified_gmt":"2026-05-23T22:55:42","slug":"blade-resonance","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/blade-resonance\/","title":{"rendered":"\u0160to je rezonancija lopatica? Vibracije ventilatora i turbine"},"content":{"rendered":"<h1>Razumijevanje rezonancije lopatica<\/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\/hr\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija 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 kompletan set prijenosnog balansera i analizatora vibracija\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">Portable balancer &amp; Vibration analyzer 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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">\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=\"Detalj senzora vibracija 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">senzor vibracija<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">\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=\"Opti\u010dki senzor (laserski tahometar)\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">Opti\u010dki senzor (laserski tahometar)<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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=\"Vibromera komplet za balansiranje rotora: torba za no\u0161enje, vi\u0161ekanalni pretvara\u010d signala, ru\u010dni analizator, magnetska baza, senzori vibracija i spiralni kabeli.\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 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=\"Magnetska baza.\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">Magnetski stalak Insize nosivosti 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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" 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\/hr\/product\/reflective-tape\/\" 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\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">\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=\"Reflektiraju\u0107a traka\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">Reflektiraju\u0107a traka<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d 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=\"Sadr\u017eaj kompleta Balanset-1A s jedinicom za su\u010delje, senzorima, tahometrom i dodacima\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">Dinami\u010dki balanser \u201cBalanset-1A\u201d 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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/58?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=\"Dodaj u ko\u0161aricu: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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>Rezonancija lopatice<\/strong> je <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/resonance\/\">rezonancija<\/a> stanje u kojem pojedine lopatice ili plo\u010de ventilator, kompresor, turbina ili pumpa vibriraju na jednoj od svojih <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/natural-frequency\/\">prirodne frekvencije<\/a> kao odgovor na uzbudu od aerodinami\u010dkih sila, mehani\u010dke vibracije ili elektromagnetskih u\u010dinaka. Kada frekvencija uzbude padne na prirodnu frekvenciju lopatice, oscilacija lopatice je dramati\u010dno poja\u010dana, stvaraju\u0107i velike izmjeni\u010dne naprezanja koja poti\u010du visokociklusa <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/fatigue\/\">umor<\/a> pukotine i, u kona\u010dnici, lom lopatice. To je posebno opasna pojava jer jedina rezonantna lopatica mo\u017ee biti gotovo nevidljiva mjerenjem vibracija le\u017eajne ku\u0107e kori\u0161tene u redovnom nadzoru, \u010dak i dok ta lopatica podnosi destruktivno naprezanje. Rezonancija lopatice je zato prvorazredna dizajnerska razmatranja u turboma\u0161inerijskom in\u017eenjerstvu, a mo\u017ee se pojaviti u industrijskom ventilatoru kad god se uvjeti rada odbegnu od originalnog dizajnerskog namjere.<\/p>\n<h2>1. Prirodne frekvencije lopatice<\/h2>\n<h3>Osnovni na\u010dini<\/h3>\n<p>Svaka lopatica je sama po sebi fleksibilna struktura s nekoliko razlicitih vibracijskih moda:<\/p>\n<h4>Prvi na\u010din savijanja<\/h4>\n<ul>\n<li>Jednostavno savijanje konzole, sa vrhom lopatice koji se deflektira.<\/li>\n<li>Najni\u017ea prirodna frekvencija lopatice.<\/li>\n<li>Najlak\u0161e je uzbudio, i zato naj\u010de\u0161\u0107e problemati\u010dan.<\/li>\n<li>Obi\u010dno 100\u20132000 Hz, ovisno o veli\u010dini i krutosti lopatice.<\/li>\n<\/ul>\n<h4>Drugi na\u010din savijanja<\/h4>\n<ul>\n<li>S-oblik savijanja sa \u010dvorom du\u017e lopatice.<\/li>\n<li>Vi\u0161a frekvencija \u2014 obi\u010dno 3\u20135\u00d7 prvi mod.<\/li>\n<li>Rje\u0111e se uzbu\u0111uje, ali potpuno je mogu\u0107e.<\/li>\n<\/ul>\n<h4>Torzijski na\u010din rada<\/h4>\n<ul>\n<li>Uvijanje lopatice oko vlastite osi.<\/li>\n<li>Njena frekvencija ovisi o geometriji lopatice i kako je lopatica montirana.<\/li>\n<li>Lako se uzbu\u0111uje nestabilnim aerodinami\u010dkim silama, koje se sna\u017eno spajaju u uvijanje.<\/li>\n<\/ul>\n<h3>\u010cimbenici koji utje\u010du na prirodnu frekvenciju lopatice<\/h3>\n<ul>\n<li><strong>Duljina lopatice:<\/strong> du\u017ee lopatice imaju ni\u017ee prirodne frekvencije.<\/li>\n<li><strong>Debljina:<\/strong> deblji lopatici su kru\u0107i i imaju vi\u0161e rezonancne frekvencije.<\/li>\n<li><strong>Materijal:<\/strong> omjer krutosti i gusto\u0107e postavlja frekvenciju za zadanu geometriju.<\/li>\n<li><strong>Monta\u017ea:<\/strong> krutost pri\u010dvr\u0161\u0107enja postavlja rubne uvjete, pomi\u010du\u0107i sve modove vibracija.<\/li>\n<li><strong>Centrifugalno zatezanje:<\/strong> pri brzini, centrifugalna napetost na lopstici pove\u0107ava njezinu prividnu krutost i podi\u017ee njezine prirodne frekvencije \u2014 zato se frekvencije lopatice moraju procjenjivati pri radnoj brzini, ne u mirovanju.<\/li>\n<\/ul>\n<p>Taj posljednji u\u010dinak, centrifugalno oja\u010danje krutosti, razlog je \u0161to se rezonancija lopatice ne mo\u017ee procijeniti samo stati\u010dkim testom; isto centrifugalno polje koje oja\u010dava lopaticu tako\u0111er je optere\u0107uje njezin korijen \u2014 optere\u0107enje koje <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/fan-blade-centrifugal-force\/\">kalkulator centrifugalne sile ventilatorske lopatice<\/a> mo\u017ee kvantificirati.<\/p>\n<h2>2. Izvori pobudnih sila<\/h2>\n<h3>Aerodinami\u010dka pobuda<\/h3>\n<h4>Uzvodni poreme\u0107aji<\/h4>\n<ul>\n<li>Potporni sto\u017eeri ili vodi\u0107e struje ispred rotora stvaraju vrtloge koje lopatice prolaze.<\/li>\n<li>Broj poreme\u0107aja pomno\u017een s brzinom rotora postavlja frekvenciju pobudne sile.<\/li>\n<li>Ako taj umno\u017eak odgovara prirodnoj frekvenciji lopatice, dolazi do rezonancije.<\/li>\n<\/ul>\n<h4>Turbulencija strujanja<\/h4>\n<ul>\n<li>Nestacionarni tok pru\u017eauje \u0161irokopojasnu, slu\u010dajnu pobudu kroz <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/turbulence\/\">turbulencija protoka<\/a>.<\/li>\n<li>Mo\u017ee pobuziti modni oblik lopatice kad god nosi energiju na toj frekvenciji.<\/li>\n<li>To je \u010desto u radu izvan projektiranih uvjeta, kada tok vi\u0161e ne slijedi lopatice jasno.<\/li>\n<\/ul>\n<h4>Akusti\u010dna rezonanca<\/h4>\n<ul>\n<li>Stoje\u0107i akusti\u010dni valovi mogu se stvarati u kanalima.<\/li>\n<li>Njihove oscilacije tlaka mogu direktno pobuziti lopatice.<\/li>\n<li>Opasnost je najve\u0107a kada se akusti\u010dni modni oblik spoji sa strukturnim modalnim oblikom lopatice na istoj frekvenciji.<\/li>\n<\/ul>\n<h3>Mehani\u010dka pobuda<\/h3>\n<ul>\n<li>Rotor <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a> stvaraju\u0107i 1\u00d7 vibracije koje se prenose u lopatice.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/misalignment\/\">Neuskla\u0111enost<\/a> doprineso\u0107i 2\u00d7 pobudnoj sili.<\/li>\n<li>Defekti le\u017eajeva koji ubrizgavaju vibracije visoke frekvencije u rotor.<\/li>\n<li>Vibracije temelja ili ku\u0107i\u0161ta koje se prenose kroz strukturu u lopatice.<\/li>\n<\/ul>\n<h3>Elektromagnetska pobuda (motorni ventilatori)<\/h3>\n<ul>\n<li>Komponenta na 2\u00d7 frekvenciji mre\u017ee istosmjernog motora.<\/li>\n<li>The <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/pole-pass-frequency\/\">frekvencija prolaska polova<\/a>.<\/li>\n<li>Ako neka od njih pada blizu vlastite frekvencije lopatice, rezonancija postaje mogu\u0107a \u2014 tako da je motor&#8217;s <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/electrical-frequency\/\">elektri\u010dna frekvencija<\/a> neophodna u bilo kojoj procjeni rezonancije lopatice izravno pogonjanog ventilatora.<\/li>\n<\/ul>\n<h2>3. Simptomi i detekcija<\/h2>\n<h3>Karakteristike vibracija<\/h3>\n<ul>\n<li><strong>Komponenta na visokoj frekvenciji<\/strong> na svojstvenoj frekvenciji lopatice, \u010desto u rasponu od 200\u20132000 Hz.<\/li>\n<li><strong>Ovisnost o brzini:<\/strong> pojavljuje se samo pri specifi\u010dnim brzinama rada gdje se podudaranje javlja.<\/li>\n<li><strong>Mogu\u0107e blago na le\u017eajima:<\/strong> budu\u0107i da je vibracijska aktivnost lopatice lokalizirana, mo\u017ee se registrirati samo slabo u mjerenjima ku\u0107i\u0161ta le\u017eaja.<\/li>\n<li><strong>Smjerno:<\/strong> mo\u017ee biti ja\u010da u pojedinim smjerovima mjerenja.<\/li>\n<\/ul>\n<h3>Akusti\u010dni indikatori<\/h3>\n<ul>\n<li>Visok piskav zvuk ili zvi\u017eduk na rezonantnoj frekvenciji.<\/li>\n<li>Tonalni \u0161um koji je jasno razli\u010dit od normalnog zvuka rada.<\/li>\n<li>Prisutno samo pri odre\u0111enim brzinama ili uvjetima protoka<\/li>\n<li>\u010cesto zapanjuju\u0107e glasan \u010dak i kada je mjerena vibracija samo umjerena.<\/li>\n<\/ul>\n<h3>Fizi\u010dki dokazi<\/h3>\n<ul>\n<li><strong>Vidljivo gibanje lopatice:<\/strong> pojedinog vibriranja ili trepetanja lopatice koje se ponekad mo\u017ee vidjeti stroboskopom.<\/li>\n<li><strong>Zamorne pukotine<\/strong> na korijenima lopatica ili drugim lokacijama koncentracije naprezanja.<\/li>\n<li><strong>Fretanje:<\/strong> tragovi istro\u0161enosti na mjestu pri\u010dvr\u0161\u0107ivanja lopatice koji izdaju relativno gibanje.<\/li>\n<li><strong>Slomljene lopatice:<\/strong> krajnji rezultat ako se rezonancija ne ispravi.<\/li>\n<\/ul>\n<h2>4. Izazovi pri detekciji<\/h2>\n<h3>Za\u0161to je rezonancija lopatica te\u0161ka za otkrivanje<\/h3>\n<ul>\n<li>Gibanje lopatica se ne prenosi sna\u017eno na ku\u0107i\u0161te le\u017eaja.<\/li>\n<li>Standardni akcelerometri pri\u010dvr\u0161\u0107eni na le\u017eaje mogu je potpuno propustiti.<\/li>\n<li>Vibracija je localizirana na pojedine lopatice, nije rasprostranjena na cijeli rotor.<\/li>\n<li>Pouzdano otkrivanje mo\u017ee zahtijevati specijalizirane tehnike mjerenja usmjerene na same lopatice.<\/li>\n<\/ul>\n<h3>Napredne metode detekcije<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/blade-tip-timing\/\">Mjerenje vremena prolaza vrha lopatice<\/a>:<\/strong> beskontaktni senzori mjere vrijeme prolaska svake lopatice da bi zaklju\u010dili njenu deformaciju, lopaticu po lopaticu.<\/li>\n<li><strong>Mjerne trake:<\/strong> pri\u010dvr\u0161\u0107eni na lopatice kako bi se direktno mjerio nap\u043e\u043d, zahtijevaju\u0107i rotor <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/telemetry\/\">telemetrija<\/a> kako bi se signal prenio s vrte\u0107e se rotora.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/laser-vibrometry\/\">Laserska vibrometrija<\/a>:<\/strong> beskontaktno opti\u010dko mjerenje gibanja lopatica.<\/li>\n<li><strong>Akusti\u010dno pra\u0107enje:<\/strong> mikrofoni ili akcelerometri pri\u010dvr\u0161\u0107eni na ku\u0107i\u0161te postavljeni blizu lopatica.<\/li>\n<\/ul>\n<h2>5. Posljedice rezonancije lopatica<\/h2>\n<h3>Visokocikli\u010dki umor<\/h3>\n<ul>\n<li>Rezonancija nanosi veliku alternativnu napetost u korijena lopatice.<\/li>\n<li>Pri stotinama herca, milijuni ciklusa napetosti akumuliraju se u svega nekoliko sati ili dana.<\/li>\n<li>Zamorne pukotine se inicijiraju i zatim \u0161ire pod tim cikli\u010dka optere\u0107enja.<\/li>\n<li>Otkaz mo\u017ee do\u0107i iznenada, sa malo prethodnog upozorenja na le\u017eajima.<\/li>\n<\/ul>\n<p>Budu\u0107i da je o\u0161te\u0107enje fundamentalno proces zamornog optere\u0107enja, amplituda alternativne napetosti i broj ciklusa odre\u0111uju koliko dugo \u0107e lopatica trajati \u2014 odnos zabilje\u017een S-N krivuljom i u\u010dinljiv <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/fatigue-life-calculator\/\">kalkulator \u017eivotnog vijeka uslijed zamaranja<\/a>.<\/p>\n<h3>Odvajanje lopatice<\/h3>\n<ul>\n<li>Potpuna lopatica se odvaja od rotora kroz zamorni otkaz.<\/li>\n<li>Izgubljena masa proizvodi ozbiljnu, trenutnu neravnote\u017eu.<\/li>\n<li>Oslobo\u0111eni fragment postaje projektil visoke energije.<\/li>\n<li>Opse\u017ena sekundarna o\u0161te\u0107enja ku\u0107i\u0161ta i komponenti nizvodno slijede.<\/li>\n<li>Predstavlja stvarnu sigurnosnu opasnost za obli\u017enje osoblje.<\/li>\n<\/ul>\n<h2>6. Prevencija i ubla\u017eavanje<\/h2>\n<h3>Faza dizajna<\/h3>\n<ul>\n<li><strong>Analiza Campbell dijagrama:<\/strong> a <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/campbell-diagram\/\">Campbellov dijagram<\/a> predvi\u0111a gdje se prirodne frekvencije lopatica sijeku sa linijama pobude across the speed range \u2014 iste informacije a <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/interference-diagram\/\">dijagram interferencije<\/a> prikazuje za sklopa sa lopaticama.<\/li>\n<li><strong>Odgovaraju\u0107a separacija:<\/strong> osigurajte da se prirodne frekvencije lopatica ne poklapaju s bilo kojim izvorom pobude unutar radnog raspona.<\/li>\n<li><strong>Uga\u0111anje lopatica:<\/strong> prilagodite krutost lopatice kako biste pomaknuli njene prirodne frekvencije daleko od pobuda.<\/li>\n<li><strong>Dizajnom ugra\u0111eno prigu\u0161enje:<\/strong> ugradite prigu\u0161iva\u010de trenja, okovratnjice ili prigu\u0161ne premaze.<\/li>\n<\/ul>\n<p>Za turbinsko o\u0161tro, ova analiza je rutinska; a <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/turbine-blade-frequency-calculator\/\">alat za prirodnu frekvenciju turbinskih lopatica i Campbell dijagram<\/a> podr\u017eava smje\u0161taj na\u010dina lopatice u odnosu na redoslijed motora koje moraju izbje\u0107i.<\/p>\n<h3>Operativna rje\u0161enja<\/h3>\n<ul>\n<li><strong>Promjena brzine:<\/strong> radite brzinom koja izbjegava rezonancu.<\/li>\n<li><strong>Kontrola protoka:<\/strong> prilagodite radnu to\u010dku kako biste smanjili silu pobude.<\/li>\n<li><strong>Zabranjeni brojevi brzina:<\/strong> \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0435 i prisilite brzine koje se moraju izbje\u0107i nakon \u0161to se identificira rezonancija.<\/li>\n<\/ul>\n<h3>Rje\u0161enja za modifikaciju<\/h3>\n<ul>\n<li><strong>Oja\u010davanje lopatice:<\/strong> dodajte materijal, rebra ili veze izme\u0111u lopatica kako biste podigli frekvenciju.<\/li>\n<li><strong>Promijenite broj lopatica:<\/strong> ovo utje\u010de na frekvenciju lopatica i uzorak uzbude, jer broj postavlja <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/blade-passing-frequency\/\">frekvenciju prolaska lopatica<\/a>; a <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/blade-pass-frequency\/\">kalkulator frekvencije prolaska lopatica<\/a> poma\u017ee provjeriti da novi broj nije samo premjestio problem.<\/li>\n<li><strong>Tretmani prigu\u0161enja:<\/strong> primijeniti prigu\u0161enje s ograni\u010denim slojem na lopatice.<\/li>\n<li><strong>Ukloniti izvor uzbude:<\/strong> izmjeniti poreme\u0107aje toka uzvodne vode koji poklapaju rezonancu.<\/li>\n<\/ul>\n<h2>7. Primjeri iz industrije<\/h2>\n<h3>Ventilatori indukcijskog crpljenja (termoelektrane)<\/h3>\n<ul>\n<li>Veliki ventilatori, promjera 10\u201320 ft, s dugim lopaticama.<\/li>\n<li>Prirodne frekvencije lopatica u rasponu od 50\u2013200 Hz.<\/li>\n<li>Mogu se podudarati s frekvencijama prolaska lopatica ili elektromagnetnim frekvencijama motora.<\/li>\n<li>Kombinacija je povijesno uzrokovala katastrofalne lomove lopatica, \u0161to je razlog za\u0161to se takvi ventilatori isti\u010du me\u0111u dokumentiranim <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/fan-defects\/\">kvarovi ventilatora<\/a>.<\/li>\n<\/ul>\n<h3>Plinske turbine<\/h3>\n<ul>\n<li>Lopatice brzohodnih kompresora i turbina.<\/li>\n<li>Frekvencije lopatica od otprilike 500\u20135000 Hz.<\/li>\n<li>Zahtijevaju sofisticirane analize tijekom projektiranja.<\/li>\n<li>\u010cesto opremljene pra\u0107enjem vremenske signalizacije vrha lopatice u kriti\u010dnoj slu\u017ebi.<\/li>\n<\/ul>\n<h3>Ventilatori za grijanje, ventilaciju i klimatizaciju<\/h3>\n<ul>\n<li>Obi\u010dno manje kriti\u010dne, zahvaljuju\u0107i ni\u017eim brzinama i naprezanjima.<\/li>\n<li>Ovdje rezonanca obi\u010dno iskazuje kao buka nego kao strukturna opasnost.<\/li>\n<li>Obi\u010dno se rje\u0161ava promjenom brzine ili skromnim kruto\u0161\u0107enjem lopatice.<\/li>\n<\/ul>\n<h2>8. Uloga uravnote\u017eivanja i mjerenja na terenu<\/h2>\n<p>Iako je rezonancija lopatice prvenstveno problem strukture i aerodinamike, mehani\u010dko uzbu\u0111enje koje je mo\u017ee izazvati uglavnom je kontrolabilno na terenu. Neuravnote\u017eenost rotora stvara silu 1\u00d7 u lopatice pri svakoj revoluciji, pa odr\u017eavanje rotora dobro uravnote\u017eenim uklanja jedan od najizbjegljivijih putanja uzbu\u0111enja \u2014 i smanjuje sinkronu optere\u0107enje na korijenima lopatica. Prenosivi dvokanalski analizator kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> omogu\u0107ava tehniciaru da uravnote\u017ei ventilator ili impeler u njegovim vlastitim le\u017eajima pri radnoj brzini i zabilje\u017ei spektar vibracija ku\u0107i\u0161ta, gdje o\u0161tar ton blizu poznate frekvencije lopatice mo\u017ee ukazati na razvijaju\u0107u rezonanciju za detaljnije, specijalizirane istrage. Smanjenje neuravnote\u017eenosti i <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/misalignment\/\">neuskla\u0111enost<\/a> ne\u0107e, samo po sebi, izlije\u010diti pravu rezonanciju lopatice \u2014 to zahtijeva pomak frekvencije ili dodatno prigu\u0161enje \u2014 ali eliminira mehani\u010dki poreme\u0107aj koji \u010desto potisnuta marginalni dizajn preko ruba.<\/p>\n<p>Rezonancija lopatice je specijalizirani fenomen vibracija koji se nalazi na sjeci\u0161tu strukturalne dinamike i me\u0111udjelovanja fluida i strukture. Iako potencijalno katastrofalan, mo\u017ee se sprije\u010diti primjenom pravilne analize dizajna, izbjegnuti kroz ograni\u010denja rada ili ubla\u017eiti strukturalnom izmjenom \u2014 osiguravaju\u0107i siguran, pouzdan rad lopatica ma\u0161inerije od HVAC ventilatora do plinskih turbina.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/\">\u2190 Natrag na glavni indeks<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte vi\u0161e o rezonanciji lopatica, poja\u010danju vibracija kada se frekvencije pobude podudaraju s prirodnim frekvencijama lopatica, \u0161to uzrokuje visokocikli\u010dki zamor i potencijalni kvar lopatica.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-58","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/58","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/58\/revisions"}],"predecessor-version":[{"id":101425,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/58\/revisions\/101425"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=58"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=58"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=58"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}