{"id":234,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/shaft-crack\/"},"modified":"2026-05-23T22:53:50","modified_gmt":"2026-05-23T22:53:50","slug":"shaft-crack","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/shaft-crack\/","title":{"rendered":"\u0160to je pukotina osovine? Otkrivanje i dijagnoza"},"content":{"rendered":"<h1>Razumijevanje pukotina na osovinama rotiraju\u0107ih strojeva<\/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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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>A <strong>pukotina osovine<\/strong> je pukotina ili diskontinuitet u rotacijskom vratilu koji nastaje od umora, koncentracije naprezanja ili materijalne gre\u0161ke. Pukotine se gotovo uvijek po\u010dinju na povr\u0161ini i \u0161ire se prema unutra, napreduju\u0107i okomito na smjer maksimalnog vla\u010dnog naprezanja. U rotacijskoj mehanici to su me\u0111u najopasnije mane jer pukotina mo\u017ee putovati od nezamjetne tanke linije do potpune frakture vratila u roku od nekoliko sati ili dana, s potencijalom za katastrofalan, opasan neuspjeh. Sre\u0107a je \u0161to se razvijaju\u0107a pukotina izdaje u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration\/\">vibracija<\/a> signalu \u2014 naro\u010dito kroz rastu\u0107i 2\u00d7 (dvaput po revoluciji) komponendu \u2014 pa disciplinirana <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration-analysis\/\">Analiza vibracija<\/a> nudi stvarnu mogu\u0107nost da je uhvatimo prije nego \u0161to se dogodi.<\/p>\n<h2>1. Definicija: \u0160to je pukotina vratila?<\/h2>\n<p>Mehani\u010dki, pukotina je regija gdje je vratilo izgubilo svoju kontinuiranost i zato svoju krutost. Kako se vratilo okre\u0107e, pukotina se naizmjeni\u010dno otvara i zatvara pod njihaju\u0107im savijaju\u0107im naprezanjem, a to &#8220;disanje&#8221; \u010dini da se krutost vratila mijenja s kutnom pozicijom. Ta asimetrija je korijen dijagnosti\u010dkih znakova raspravljivih dolje, i to je ono \u0161to dijeli pravu popre\u010dnu pukotinu od permanentne <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/shaft-bow\/\">luk osovine<\/a> ili jednostavan <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a>. \u0160iri fenomen, kada se pukotina dovoljno napredovala da promijeni pona\u0161anje cijelog rotora, ponekad se obra\u0111uje pod naslovom <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/cracked-rotor\/\">napuknuti rotor<\/a>.<\/p>\n<h2>2. \u010cesti uzroci pukotina na vratilima<\/h2>\n<h3>Umor od ciklusa naprezanja<\/h3>\n<p>Dominantan uzrok u rotacijskom stroju je umor koji akumulira o\u0161te\u0107enja jedan napor po jedan ciklus:<\/p>\n<ul>\n<li><strong>Umor pri savijanju:<\/strong> vratilokoje se vrti sa neujedna\u010denom kruto\u0161\u0107u ili neusmjerenim optere\u0107enjima isku\u0161ava potpuno preokrenut cikli\u010dki napon savijanja.<\/li>\n<li><strong>Umor pri torziji:<\/strong> osciliraju\u0107i moment (torque) u vratilima za prijenos snage uzrokuje <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/torsional-vibration\/\">torzijske vibracije<\/a> i zamora materijala.<\/li>\n<li><strong>Umor pri visokom broju ciklusa:<\/strong> milijuni ciklusa akumuliraju se tijekom godina, pa \u010dak i skromna naprezanja mogu naposljetku inicijirati pukotinu.<\/li>\n<li><strong>Koncentracija naprezanja:<\/strong> utori za klinove, popre\u010dni otvori, filete i drugi geometrijski diskontinuiteti lokalno poja\u010davaju naprezanje i obi\u010dno su mjesta inicijacije.<\/li>\n<\/ul>\n<h3>Uvjeti rada<\/h3>\n<ul>\n<li><strong>Prekomjerna neuravnote\u017ea:<\/strong> velika centrifugalna sila dodaje cikli\u010dki napon savijanja.<\/li>\n<li><strong>Neuskla\u0111enost:<\/strong> momenti savijanja od <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/misalignment\/\">neuskla\u0111enost<\/a> ubrzavaju umor.<\/li>\n<li><strong>Rad pri rezonanciji:<\/strong> rad pri ili blizu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dna brzina<\/a> stvara velika otklanjanja i naprezanja.<\/li>\n<li><strong>Preoptere\u0107enje:<\/strong> rad izvan granica projektiranja.<\/li>\n<li><strong>Termalni stres:<\/strong> brzo zagrijavanje ili hla\u0111enje i strma temperaturna polja, koja mogu proizazvati prolaznu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/thermal-bow\/\">toplinsko savijanje vratila<\/a>.<\/li>\n<\/ul>\n<h3>Gre\u0161ke materijalnog i proizvodnog kvalitete<\/h3>\n<ul>\n<li><strong>Materijalne uklju\u010denosti:<\/strong> ljuske, prazni prostori ili strani materijal u materijalu osovine.<\/li>\n<li><strong>Nepravilna toplinska obrada:<\/strong> neadekvatan kaljenje ili popu\u0161tanje.<\/li>\n<li><strong>Gre\u0161ke obrade:<\/strong> tragovi alata, zarezi ili ogrebotine koje djeluju kao skuplja\u010di naprezanja.<\/li>\n<li><strong>Korozivna erozija:<\/strong> povr\u0161inske jamice koje slu\u017ee kao mjesta iniciranja pukotina.<\/li>\n<li><strong>Fretanje:<\/strong> na su\u010deljima pritisnog namje\u0161taja ili na klju\u010dnicama, gdje mikro-pokret o\u0161te\u0107uje povr\u0161inu.<\/li>\n<\/ul>\n<h3>Operativni doga\u0111aji<\/h3>\n<ul>\n<li><strong>Doga\u0111aji visokih brzina vrtnje:<\/strong> slu\u010dajna ili namjerna prebrza vrtnja koja nanosi visoka naprezanja.<\/li>\n<li><strong>Jako trljanje:<\/strong> <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-rub\/\">trljanje rotora<\/a> Kontakt koji generira toplinu i lokalnu koncentraciju naprezanja<\/li>\n<li><strong>Udarno optere\u0107enje:<\/strong> Iznenadna optere\u0107enja uzrokovana procesnim poreme\u0107ajima ili mehani\u010dkim udarima<\/li>\n<li><strong>Prethodne popravke:<\/strong> zavarivanje ili obrada koja iza sebe ostavlja rezidualna naprezanja.<\/li>\n<\/ul>\n<h2>3. Vibracije kao znakovi pukotine osovine<\/h2>\n<h3>Karakteristi\u010dna komponenta 2\u00d7<\/h3>\n<p>Karakteristi\u010dni potpis popre\u010dne pukotine osovine je vidljiva <strong>2\u00d7 (drugi harmonik)<\/strong> komponenta, te je mehanizam iza nje vrijedan preciznog razumijevanja:<\/p>\n<ul>\n<li>Dok se osovina vrti, pukotina se otvara i zatvara dva puta po okretaju.<\/li>\n<li>Kada se pukotina nalazi na strani tlaka (ni\u017ee u rotaciji), zatvara se i osovina je krutija.<\/li>\n<li>Kad se nagne na stranu vla\u010dnog naprezanja (gore tijekom rotacije), otvara se i osovina je fleksibilnija.<\/li>\n<li>Ovo dvostruko titranje krutosti po revoluciji samo je 2\u00d7 forcing funkcija.<\/li>\n<li>Amplituda 2\u00d7 raste kako pukotina ja\u010da i asimetrija krutosti se pove\u0107ava \u2014 zbog \u010dega <em>trend<\/em> ima jednaku va\u017enost kao i apsolutna razina.<\/li>\n<\/ul>\n<h3>Dodatni indikatori vibracija<\/h3>\n<ul>\n<li><strong>Promjene 1\u00d7:<\/strong> postupan porast komponente 1\u00d7 kao rezultat promijenjene krutosti i razvoja ostatne istrio\u0161enosti.<\/li>\n<li><strong>Vi\u0161i harmonici:<\/strong> 3\u00d7 i 4\u00d7 mogu se pojaviti kako ozbiljnost raste.<\/li>\n<li><strong>Fazni pomaci:<\/strong> on <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">faza<\/a> kut se mijenja tijekom zalaska ili zaustavljanja i pri razli\u010ditim brzinama.<\/li>\n<li><strong>Pona\u0161anje ovisno o brzini:<\/strong> vibracija se mo\u017ee nelinearno razlikovati s brzinom.<\/li>\n<li><strong>Osjetljivost na temperaturu:<\/strong> o\u010ditanja mogu pratiti toplinsko pro\u0161irenje kako se pukotina otvara ili zatvara.<\/li>\n<\/ul>\n<h3>Pona\u0161anje tijekom zalaska i zaustavljanja<\/h3>\n<ul>\n<li>Komponenta 2\u00d7 se neobi\u010dno pona\u0161a tijekom prijelaznih stanja.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bode-plot\/\">Bodeov dijagram<\/a> mo\u017ee pokazati dva rezonantna vrha, jedan na polovici svake kriti\u010dne brzine, kako 2\u00d7 pobuda prolazi kroz.<\/li>\n<li>Fazna progresija komponente 1\u00d7 mo\u017ee se zna\u010dajno razlikovati od normalnog odgovora neuravnote\u017eenosti.<\/li>\n<\/ul>\n<h2>4. Metode detekcije<\/h2>\n<h3>Nadzor vibracija i mjerenje na mjestu<\/h3>\n<p>Budu\u0107i da je upozorenje spektralno i progresivno, redovito mjerenje je prva linija obrane:<\/p>\n<ul>\n<li><strong>Trendovi:<\/strong> pratite omjer 2\u00d7\/1\u00d7 tijekom vremena; stalni porast je upozorenje, a omjer iznad pribli\u017eno 0.5 zahtijeva istragu. Iznenadne promjene obrasca jednako su sumnjive.<\/li>\n<li><strong>Spektralna analiza:<\/strong> rutinski <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/fft\/\">FFT<\/a> mjerenja, uspore\u0111ena s povijesnom <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/baseline\/\">osnovna vrijednost<\/a>, otkrivaju pojavljivanje ili rast vrha 2\u00d7.<\/li>\n<li><strong>Prijelazna analiza:<\/strong> <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/waterfall-plot\/\">vodopadni dijagrami<\/a> i Bodeovi dijagrami iz zalaska i zaustavljanja otkrivaju neuobi\u010dajeno pona\u0161anje tijekom prolaska kroz kriti\u010dne brzine.<\/li>\n<\/ul>\n<p>Snimanje amplitude i faze komponenti 1\u00d7 i 2\u00d7 upravo je mjerenje koje prijenosni dvokanalni analizator \u010dini rutinskim. S instrumentom s faznom referencom kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a>, tehni\u010dar mo\u017ee bilje\u017eiti vektore 1\u00d7 i 2\u00d7 na le\u017eajevima tijekom normalnog rada i pri svakom zaustavljanju po inerciji, grade\u0107i trend koji razlikuje bezazlen 2\u00d7 od onoga koji stalno raste \u2014 razliku izme\u0111u planiranog zaustavljanja i neplanirane havarije.<\/p>\n<h3>Metode bez vibracija<\/h3>\n<p>Sumnjiv trend vibracija uvijek treba potvrditi direktno <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/non-destructive-testing\/\">nedestruktivno ispitivanje<\/a>:<\/p>\n<ul>\n<li><strong>Magnetska \u010destica inspekcija (MPI):<\/strong> pronalazi pukotine na povr\u0161ini i blizu povr\u0161ine s visokom pouzdanosti na dostupnim feromagnetskim vratilima; standard rutinskih inspekcija tijekom redovnih zaustavljanja.<\/li>\n<li><strong>Ultrazvu\u010dno ispitivanje (UT):<\/strong> otkriva unutarnje i povr\u0161inske pukotine i mo\u017ee ih prona\u0107i prije nego \u0161to se pojavi bilo koji simptom vibracija; zahtijeva specijalisti\u010dku opremu i obu\u010deni kadar, te je preporu\u010dena metoda za kriti\u010dna vratila.<\/li>\n<li><strong>Inspekcija penetrantnim bojama:<\/strong> jednostavna metoda za detekciju povr\u0161inskih pukotina koja zahtijeva \u010di\u0161\u0107enje i pripremu povr\u0161ine, korisna za dostupna podru\u010dja tijekom zaustavljanja.<\/li>\n<li><strong>Eddy-current testiranje:<\/strong> beskontaktna detekcija povr\u0161inskih pukotina koja je prikladan za automatizirane inspekcije i radi na magnetskim i nemagnetskim materijalima.<\/li>\n<\/ul>\n<h2>5. Odziv i korekcijske mjere<\/h2>\n<h3>Hitne mjere pri detekciji<\/h3>\n<ol>\n<li><strong>Pove\u0107ajte u\u010destalost nadzora:<\/strong> prije\u0111ite sa mjese\u010dnog na tjedni ili dnevni monitoring.<\/li>\n<li><strong>Smanjite ozbiljnost pogona:<\/strong> smanjite brzinu ili optere\u0107enje gdje je mogu\u0107e.<\/li>\n<li><strong>Planirajte zaustavljanje:<\/strong> Zaka\u017eite popravak ili zamjenu \u0161to je prije mogu\u0107e<\/li>\n<li><strong>Izvr\u0161ite NDE:<\/strong> potvrdite prisutnost pukotine i direktno procjenite njenu ozbiljnost.<\/li>\n<li><strong>Procjena rizika:<\/strong> formalno odlu\u010dite je li nastavak rada siguran.<\/li>\n<\/ol>\n<h3>Dugoro\u010dna rje\u0161enja<\/h3>\n<ul>\n<li><strong>Zamjena vratila:<\/strong> najpouzdaniji remedij za potvr\u0111enu pukotinu.<\/li>\n<li><strong>Popravak (ograni\u010deni slu\u010dajevi):<\/strong> neke pukotine mogu se obraditi i dodatno navariti, ali samo nakon stru\u010dne procjene.<\/li>\n<li><strong>Analiza uzroka:<\/strong> utvrditi za\u0161to je pukotina nastala kako se ne bi ponovila.<\/li>\n<li><strong>Izmjene konstrukcije:<\/strong> ubla\u017eiti koncentracije naprezanja, pobolj\u0161ati izbor materijala ili promijeniti radni re\u017eim.<\/li>\n<\/ul>\n<h2>6. Strategije prevencije<\/h2>\n<h3>Faza projektiranja<\/h3>\n<ul>\n<li>Eliminirati o\u0161tre kutove i koncentracije naprezanja.<\/li>\n<li>Koristiti hojdaju\u0107e radijuse na mjestima promjene promjera.<\/li>\n<li>Odabrati materijale prikladan razini naprezanja i okru\u017eenju.<\/li>\n<li>Provesti analizu naprezanja metodom kona\u010dnih elemenata na kriti\u010dnoj geometriji.<\/li>\n<li>Primijeniti povr\u0161insku obrada kao \u0161to su shot peening ili nitriranje kako bi se pove\u0107ala otpornost na umor.<\/li>\n<\/ul>\n<h3>Faza rada<\/h3>\n<ul>\n<li>Odr\u017eavajte dobro <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balance-quality\/\">kvaliteta uravnote\u017eenja<\/a> za minimiziranje cikli\u010dkog savojnog naprezanja.<\/li>\n<li>Osigurati preciznu poravnaciju.<\/li>\n<li>Izbjegavajte kontinuirani rad pri kriti\u010dnim brzinama.<\/li>\n<li>Sprije\u010dite doga\u0111aje prebrze vo\u017enje.<\/li>\n<li>Kontrolirati toplinsko naprezanje odgovaraju\u0107im postupcima zagrijavanja i hla\u0111enja.<\/li>\n<\/ul>\n<h3>Faza odr\u017eavanja<\/h3>\n<ul>\n<li>Redovito provjeravati upotrebom odgovaraju\u0107ih metoda nedestruktivnog ispitivanja.<\/li>\n<li>Pokrenuti monitoring vibracija <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/trending\/\">pra\u0107enje trendova<\/a> program za rano otkrivanje simptoma.<\/li>\n<li>Periodi\u010dki ponovno balansiraj da odr\u017ei\u0161 naprezanja od umora niska \u2014 na mjestu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/field-balancing\/\">terensko balansiranje<\/a> \u010dini ovo prakti\u010dnim bez demonta\u017ee rotora.<\/li>\n<li>Odr\u017eavati za\u0161titu od korozije i prevlake.<\/li>\n<\/ul>\n<p>Pukotine na vratilu predstavljaju jedan od najte\u017eih na\u010dina kvarenja u rotacijskoj mehanici, gdje je posljedica proslje\u0111ivanja mjerena u uni\u0161tenim sredstvima i ugro\u017eenim ljudima. Kombinacija je klju\u010dna: monitoring vibracija za rano otkrivanje karakteristi\u010dne 2\u00d7 signature i periodi\u010dko nedestruktivno ispitivanje kako bi se potvrdilo i izmjerilo \u0161to vibracija samo indicira. Zajedno omogu\u0107uju planiranu, kontroliranu odr\u017eavost \u2014 i dr\u017ee tihnu pukotinu da ne bude iznenadno, nasilno lomljenje.<\/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 pukotinama na vratilima u rotiraju\u0107im strojevima, njihovim uzrocima, karakteristi\u010dnim vibracijskim potpisima, uklju\u010duju\u0107i 2X komponente, i kriti\u010dnim metodama otkrivanja kako biste sprije\u010dili katastrofalne kvarove.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-234","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/234","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\/234\/revisions"}],"predecessor-version":[{"id":101407,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/234\/revisions\/101407"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}