{"id":116,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/fatigue\/"},"modified":"2026-05-23T22:51:15","modified_gmt":"2026-05-23T22:51:15","slug":"fatigue","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/fatigue\/","title":{"rendered":"\u0160to je mehani\u010dki zamor? Cikli\u010dki naponski lom"},"content":{"rendered":"<h1>Razumijevanje mehani\u010dkog umora<\/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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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\/116?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>Mehani\u010dki zamor<\/strong> (poznat i kao umor materijala ili jednostavno umor) je progresivna, lokalizirana strukturna o\u0161te\u0107enja koja se razvijaju kada je materijal izlo\u017een ponovljenim ciklusa naprezanja ili deformacije \u2014 \u010dak i kada vr\u0161na naprezanja u svakom ciklusu ostaju primjetno ispod krajnjeg naprezanja na vlak ili naprezanja na granici popu\u0161tanja materijala. Mikroskopske pukotine nastaju i rastu tijekom tisu\u0107a, milijuna ili \u010dak milijardi ciklusa dok preostali presjek vi\u0161e ne mo\u017ee prenositi optere\u0107enje i dio se ne prekine, \u010desto bez vidljivog upozorenja. U rotiraju\u0107im strojevima to je naj\u010de\u0161\u0107e naj\u010de\u0161\u0107e nepredvidivih na\u010dina ru\u0161enja koji tiho skra\u0107uje vijek <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor\/\">rotori<\/a>, vratila, zup\u010danika, <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bearing-defects\/\">le\u017eajevi<\/a>, zatika i potpornih struktura, a izravno je uzrokovan ciklri\u010dkim naprezanjima koja <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration\/\">vibracija<\/a> name\u0107e stroju.<\/p>\n<h2>1. Definicija: \u0160to je umor \u2014 i za\u0161to je tako opasan<\/h2>\n<p>Umor je z\u00e1ludna upravo zato \u0161to ru\u0161ava intuiciju da je dio &#8220;sigurna&#8221; ako jedno optere\u0107enje nikad ne prelazi njegovu nominalnu \u010dvrsto\u0107u. Kod <em>ponavljano<\/em> optere\u0107enja, naprezanja koja su ne\u0161kodljiva kada se primijene jednom mogu biti kobna kada se primijene deset milijuna puta. O\u0161te\u0107enja se akumuliraju nevidljivo, dio ne pokazuje o\u010digledne znakove distresa, a zatim se iznenada popu\u0161ta tijekom normalnog rada. Budu\u0107i da rotiraju\u0107a oprema kontinuirano ciklira svoje komponente \u2014 vratilo do\u017eivljava jedno potpuno preokretanje naprezanja u svakoj revoluciji \u2014 \u010dak i skromna <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a> ili <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/misalignment\/\">neuskla\u0111enost<\/a> mo\u017ee akumulirati kolosalan broj ciklusa u roku od nekoliko tjedana. Razumijevanje umora je stoga temeljno za bezbedan dizajn strojeva i zdravo svakodnevno radno iskustvo.<\/p>\n<h2>2. Tri faze o\u0161te\u0107enja od umora<\/h2>\n<p>O\u0161te\u0107enje od umora nije jedan doga\u0111aj ve\u0107 niz koji se razvija tijekom vijek dijela. Konvencionalno se dijeli na tri faze.<\/p>\n<h3>Faza 1: Inicijacija pukotine<\/h3>\n<ul>\n<li><strong>Mjesto:<\/strong> Pukotine po\u010dinju na mjestima koncentracije naprezanja \u2014 otvorima, uglovima zaobljenja, utorima za pera, oznakama obrade ili povr\u0161inskim gre\u0161kama \u2014 gdje je lokalno naprezanja poja\u010dano.<\/li>\n<li><strong>Mehanizam:<\/strong> Ponovljena lokalizirana plasti\u010dna deformacija stvara mikroskopsku pukotinu, obi\u010dno manju od 0,1 mm.<\/li>\n<li><strong>Trajanje:<\/strong> Na glatkim, dobro obra\u0111enim povr\u0161inama, inicijacija mo\u017ee konzumirati 50\u201390% ukupnog \u017eivotnog veka zamora.<\/li>\n<li><strong>Otkrivanje:<\/strong> Izuzetno te\u0161ko; po\u010detni\u010dka pukotina obi\u010dno nije vidljiva tijekom eksploatacije.<\/li>\n<\/ul>\n<h3>Faza 2: \u0160irenje pukotine<\/h3>\n<ul>\n<li><strong>Postupak:<\/strong> Pukotina napreduje malim inkrementom sa svakim ciklom optere\u0107enja.<\/li>\n<li><strong>Stopa:<\/strong> Rast prati Parisov zakon \u2014 brzina rasta pukotine proporcionalna je faktoru intenziteta naprezanja podignuta na odre\u0111enu potenciju.<\/li>\n<li><strong>Izgled:<\/strong> Glatka, obi\u010dno polukru\u017ena ili elipti\u010dna prednja strana pukotine<\/li>\n<li><strong>Pla\u017ene pruge:<\/strong> Koncentri\u010dni &#8220;lastura\u0219ti&#8221; obrasci na povr\u0161ini loma bilje\u017ee uzastopne faze rasta pukotine i predstavljaju klasi\u010dan otisak zamora.<\/li>\n<li><strong>Trajanje:<\/strong> \u010cesto 10\u201350% ukupnog \u017eivotnog veka.<\/li>\n<\/ul>\n<h3>Faza 3: Kona\u010dni prijelom<\/h3>\n<ul>\n<li>Pukotina dosti\u017ee kriti\u010dnu veli\u010dinu pri kojoj preostali presjek vi\u0161e ne mo\u017ee podnijeti optere\u0107enje.<\/li>\n<li>Preostali presjek odjednom i katastrofalno otkazuje.<\/li>\n<li>Ova zona finalnog loma je gruba i nepravilna, \u0161to se o\u0161tro razlikuje od glatke, polirane zone zamora.<\/li>\n<li>Gotovo nikada se ne javlja sa upozorenjem, tijekom ina\u010de normalnog rada.<\/li>\n<\/ul>\n<p>\u010citanje slomljenog dijela unazad \u2014 od grube zone preoptere\u0107enja, kroz beach markacije, do to\u010dke inicijacije \u2014 jezgra je vje\u0161tine analize kvarova i \u010desto ta\u010dno locira koju koncentraciju naprezanja je pokrenula problem.<\/p>\n<h3>Zamorni vijek visokog broja ciklusa nasuprot niskome broju ciklusa<\/h3>\n<p>In\u017eenjeri dodatno razlikuju <strong>zamorni vijek visokog broja ciklusa<\/strong> (niska naprezanja, uglavnom elasti\u010dno pona\u0161anje, vijekovi iznad pribli\u017eno 10\u2074\u201310\u2075 ciklusa \u2014 re\u017eim ve\u0107ine dijelova rotiraju\u0107ih strojeva) naspram <strong>zamornog vijeka niskoga broja ciklusa<\/strong> (visoka naprezanja sa zna\u010dajnom plasti\u010dnom deformacijom u svakom ciklusu, kratki vijekovi, tipi\u010dni za cikliranje temperature i ozbiljno privremeno optere\u0107enje). \u010celici \u010desto pokazuju <em>granicu izdr\u017eljivosti<\/em> \u2014 naprezanje ispod kojega zamorni vijek postaje prakti\u010dki beskona\u010dan \u2014 dok mnoge aluminjske i obojene legure nemaju pravu granicu izdr\u017eljivosti i na kraju \u0107e otkazati pri bilo kojoj amplitudi naprezanja.<\/p>\n<h2>3. Zamor u rotiraju\u0107im strojevima<\/h2>\n<h3>Zamor osovine<\/h3>\n<ul>\n<li><strong>Uzrok:<\/strong> Naprezanja savijanja od neuravnote\u017eenosti, neuskla\u0111enosti ili popre\u010dnog optere\u0107enja.<\/li>\n<li><strong>Ciklus naprezanja:<\/strong> Rotiraju\u0107i vratilo pod fiksnim optere\u0107enjem savijanja do\u017eivljava potpunu preokret naprezanja pri svakim okretajem (potpuno obrnuto, rotaciono-savojno umor).<\/li>\n<li><strong>\u010ceste lokacije:<\/strong> Utori za klju\u010d, promjene promjera, ramena i pritiski \u2014 sve koncentracije naprezanja.<\/li>\n<li><strong>Tipi\u010dan vijek trajanja:<\/strong> 10\u2077 do 10\u2079 ciklusa, \u0161to odgovara godinama rada.<\/li>\n<li><strong>Otkrivanje:<\/strong> Propagiraju\u0107a popre\u010dna pukotina otvara se i zatvara jednom po okretaju, stvaraju\u0107i karakteristi\u010dne 1\u00d7 i 2\u00d7 <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/shaft-crack\/\">pukotina vratila<\/a> signatura vibracijske; stacionarno savijanje \u010desto se s njom mije\u0161a, pa se pona\u0161anje faze kroz <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dna brzina<\/a> mora provjeriti.<\/li>\n<\/ul>\n<h3>Umor le\u017eaja<\/h3>\n<ul>\n<li><strong>Mehanizam:<\/strong> Umor valjanog dodira uzrokovan cikli\u010dkim Hertzovim kontaktnim naprezanjima ispod povr\u0161ine.<\/li>\n<li><strong>Rezultat:<\/strong> <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/spalling\/\">lju\u0161tenje<\/a> \u2014 lju\u0161tenje prstenova ili valja\u0107ih elemenata.<\/li>\n<li><strong>L10 vijek trajanja:<\/strong> Statisti\u010dki vijek trajanja pri kojem \u0107e 10% populacije le\u017eajeva biti neispravno zbog umora valjanog dodira; to je standardna osnova projektiranja.<\/li>\n<li><strong>Otkrivanje:<\/strong> \u010cim po\u010dne lju\u0161tenje, karakteristi\u010dno <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bearing-fault-frequencies\/\">frekvencije kvarova le\u017eajeva<\/a> se pojavljuje u spektru i u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/envelope-analysis\/\">analiza omota\u010da<\/a>.<\/li>\n<\/ul>\n<h3>Zamor zuba zup\u010danika<\/h3>\n<ul>\n<li><strong>Umor pri savijanju:<\/strong> Pukotine se stvaraju pri zaobljenju korijena zuba, najnapregnutijem podru\u010dju optere\u0107enog zuba.<\/li>\n<li><strong>Umor dodira:<\/strong> Povr\u0161ina <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/pitting\/\">korozija<\/a> i lju\u0161tenje na radnoj boci.<\/li>\n<li><strong>Ciklusi:<\/strong> Svako uklju\u010divanje zubaca predstavlja jedan ciklus naprezanja, pa se brojevi ciklusa brzo nakupljaju.<\/li>\n<li><strong>Neuspjeh:<\/strong> Otvoreni lom zuba ili progresivno pogor\u0161anje povr\u0161ine, oboje vidljivo u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/gear-mesh-frequency\/\">frekvencija zahvata zup\u010danika<\/a> i njene bo\u010dne pojaseve.<\/li>\n<\/ul>\n<h3>Zamor pri\u010dvr\u0161\u0107iva\u010da<\/h3>\n<ul>\n<li>Vijci pod naizmjeni\u010dnim optere\u0107enjem od vibracija su klasi\u010dni \u017ertve umora.<\/li>\n<li>Pukotine se obi\u010dno stvaraju pri prvom uklju\u010denom navoju unutar matica, mjesto maksimalne koncentracije naprezanja.<\/li>\n<li>Neispravnost je nagle i bez vidljive upozorenja.<\/li>\n<li>Neuspje\u0161ni vijak stezanja ili spojnog vijka mo\u017ee dovesti do odvajanja opreme ili kolapsa, \u010dine\u0107i umor brtvljenja pravim sigurnosnim pitanjem.<\/li>\n<\/ul>\n<h3>Strukturni zamor<\/h3>\n<ul>\n<li>Okviri, <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bearing-pedestal\/\">postolja<\/a> i zavarenih spojeva izlo\u017eeni su ciklama optere\u0107enja od vibracija stroja.<\/li>\n<li>Vibracije stvaraju naizmjeni\u010dna naprezanja koja pokre\u0107u proces.<\/li>\n<li>Pukotine se favoriziraju na zavarenim spojevima, kutovima i geometrijskim diskontinuitetima.<\/li>\n<li>Rezultat je progresivno propadanje same strukture koja nosi stroj \u2014 \u0161to pak pove\u0107ava <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/looseness\/\">mehani\u010dka labavost<\/a> i poja\u010dava vibracije dodatno, u \u0161tetnu povratnu spregu.<\/li>\n<\/ul>\n<h2>4. \u010cimbenici koji odre\u0111uju \u017eivotni vijek do umora<\/h2>\n<h3>Amplituda naprezanja<\/h3>\n<ul>\n<li>\u017divotni vijek pada strmo \u2014 nelinearno \u2014 kako amplituda naprezanja raste.<\/li>\n<li>Korisna aproksimacija je \u017divotni vijek \u221d 1\/Naprezanje\u207f, gdje je n obi\u010dno izme\u0111u 6 i 10.<\/li>\n<li>Prakti\u010dna posljedica je duboka: malo smanjenje naizmjeni\u010dnog naprezanja mo\u017ee vi\u0161estruko produ\u017eiti \u017eivotni vijek.<\/li>\n<li>Budu\u0107i da je naprezanje izazvano vibracijama naizmjeni\u010dna komponenta, <strong>minimiziranje vibracija izravno produ\u017euje \u017eivotni vijek do umora<\/strong>.<\/li>\n<\/ul>\n<h3>Srednji stres<\/h3>\n<ul>\n<li>Konstantno (srednjeg vrijednost) naprezanje superponirano na naizmjeni\u010dno naprezanje smanjuje dozvoljenu amplitudu izmjene.<\/li>\n<li>Ve\u0107e srednje naprezanje sni\u017eava \u010dvrsto\u0107u na zamor (\u0161to je opisano Goodmanovim, Gerberovim ili Soderbergovim dijagramima).<\/li>\n<li>Komponente s prednaprezanjem ili inicijalno napregnutom su stoga osjetljivije.<\/li>\n<\/ul>\n<h3>Koncentracije stresa<\/h3>\n<ul>\n<li>Rupe, kutovi, \u017eljebovi i navoji lokalno umno\u017eavaju nominalno naprezanje.<\/li>\n<li>Faktor koncentracije naprezanja (K<sub>t<\/sub>) kvantificira to umno\u017eavanje.<\/li>\n<li>Pukotine gotovo uvijek po\u010dinju na tim mjestima.<\/li>\n<li>Velikodu\u0161ni radijusi i izbjegavanje o\u0161trih kutova prvi su redak obrane.<\/li>\n<\/ul>\n<h3>Stanje povr\u0161ine<\/h3>\n<ul>\n<li>Hrapavost povr\u0161ine je va\u017ena \u2014 glatke povr\u0161ine otporne su na zamor daleko bolje nego hrapave.<\/li>\n<li>Zareze, ogrebotine i <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/corrosion\/\">korozija<\/a> jame su mjesto nastanka pukotina.<\/li>\n<li>Tretmani kao \u0161to su pje\u0161\u010dano bljeskanje i nitriranje induciraju tla\u010dne rezidualne naprezanja na povr\u0161ini i znatno pobolj\u0161avaju otpornost na umor.<\/li>\n<\/ul>\n<h3>Okoli\u0161<\/h3>\n<ul>\n<li><strong>Korozijska umarenost:<\/strong> Korozivno okru\u017eenje ubrzava rast pukotina i mo\u017ee potpuno ukloniti granicu izdr\u017eljivosti.<\/li>\n<li><strong>Temperatura:<\/strong> Povi\u0161ene temperature op\u0107enito smanjuju \u010dvrsto\u0107u pri umoru i dodaju me\u0111udjelovanje puzanja.<\/li>\n<li><strong>Frekvencija:<\/strong> Vrlo visoke ili vrlo niske brzine ciklusa mogu promijeniti pona\u0161anje umarenosti, pogotovo kada je uklju\u010dena korozija ili puzanje.<\/li>\n<\/ul>\n<h2>5. Strategije za\u0161tite tijekom \u017eivotnog ciklusa<\/h2>\n<h3>Faza dizajna<\/h3>\n<ul>\n<li>Uklonite ili svesti na minimum koncentracije naprezanja velikim zaobljenjem.<\/li>\n<li>Projektujte sa odgovaraju\u0107im faktorima sigurnosti pri umoru (obi\u010dno 2\u20134).<\/li>\n<li>Odaberite materijale s dobrim svojstvima umarenosti.<\/li>\n<li>Koristite analizu kona\u010dnih elemenata da locnirate podru\u010dja visoke naprezanja, te gdje je god mogu\u0107e dr\u017eite rupe i zareze izvan njih.<\/li>\n<\/ul>\n<h3>Proizvodnja<\/h3>\n<ul>\n<li>Pobolj\u0161ajte hrapavost povr\u0161ine na kriti\u010dnim dijelovima s visokim naprezanjem.<\/li>\n<li>Primijenite tretmane povr\u0161ine kao \u0161to su pje\u0161\u010dano bljeskanje i tvrdo\u0107a od umora.<\/li>\n<li>Koristite odgovaraju\u0107u toplinsku obradu da razvijete optimalnu \u010dvrsto\u0107u pri umoru.<\/li>\n<li>Izbjegavajte tragove obrade okomite na smjer glavnog naprezanja.<\/li>\n<\/ul>\n<h3>Operacija<\/h3>\n<ul>\n<li><strong>Smanjite vibracije:<\/strong> Dobro <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">uravnote\u017eenost<\/a> i preciznost <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/laser-shaft-alignment\/\">poravnanje osovine<\/a> zaustavite izmjena naprezanja na izvoru.<\/li>\n<li><strong>Izbjegavajte prepla\u010denja:<\/strong> Radite u granicama projektiranja.<\/li>\n<li><strong>Sprije\u010dite rezonancu:<\/strong> Izbjegavajte kriti\u010dne brzine na kojima <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/resonance\/\">rezonancija<\/a> mo\u017ee pomno\u017eiti dinami\u010dki napon mnogo puta.<\/li>\n<li><strong>Kontrolirajte koroziju:<\/strong> Za\u0161titni premazi i inhibitori.<\/li>\n<\/ul>\n<h3>Odr\u017eavanje i nadzor<\/h3>\n<ul>\n<li>Redovito pregledajte na prisustvo pukotina koriste\u0107i vizualni pregled i <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/non-destructive-testing\/\">nedestruktivno ispitivanje<\/a> metode.<\/li>\n<li>Pratite vibracije kao najraniji signal razvijaju\u0107e pukotine.<\/li>\n<li>Povucite iz upotrebe komponente na kraju njihova izra\u010dunatoga vijeka umora umjesto \u010dekanja na neuspjeh.<\/li>\n<li>Odmah popravite o\u0161te\u0107enja na povr\u0161ini, jer svaka nova ogrebotina mo\u017ee postati izvor budu\u0107e pukotine.<\/li>\n<\/ul>\n<p>Budu\u0107i da vibracija <em>je<\/em> izmjeni\u010dnog napona koji hrani umor, odr\u017eavanje vibracija na niskoj razini jedan je od najefikasnijih mjera za sprije\u010davanje umora dostupnih. Na terenu, prijenosni dvokanalski instrument kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> omogu\u0107uje tehni\u010daru da balansira rotor u vlastitim le\u017eajima i provjeri je li rezidualna 1\u00d7 amplituda smanjena, direktno smanjuju\u0107i cikli\u010dki savijaju\u0107i napon koji osovina trpi svakom revolucijom i produljuju\u0107i njezin vijek umora. Kako bi se dali brojevi razmjeni, koristi se <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/fatigue-life-calculator\/\">kalkulator S-N \/ Basquinova vijeka umora<\/a> pokazuje koliko strmo vijek raste s smanjenjem amplitude napona, a <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/centrifugal-force-unbalance\/\">kalkulator centrifugalne sile od neuravnote\u017eenosti<\/a> kvantificira cikli\u010dku silu koju odre\u0111ena koli\u010dina neuravnote\u017eenosti baca na le\u017eajeve i osovinu.<\/p>\n<p>Ukratko, mehani\u010dki umor je temeljni re\u017eim neuspjeha koji kumulative cikli\u010dno o\u0161te\u0107enje pretvara u odjednom, \u010desto katastrofalno lom. Projektiranje bez koncentracija napona, izbor odgovaraju\u0107ih materijala i tretmana te \u2014 klju\u010dno \u2014 odr\u017eavanje vibracija na niskoj razini kroz dobru balansiranost i poravnanje su poluge koje ga sprije\u010davaju i omogu\u0107uju duga\u010dak, pouzdan radni vijek strojeva.<\/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 mehani\u010dkom zamoru, progresivnom o\u0161te\u0107enju od ponovljenih ciklusa naprezanja koji uzrokuju pukotine i kvarove u osovinama, zup\u010danicima i konstrukcijama, \u010dak i pri naprezanjima ispod granice razvla\u010denja.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-116","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/116","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\/116\/revisions"}],"predecessor-version":[{"id":101382,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/116\/revisions\/101382"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=116"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}