{"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\/sl\/glossary\/fatigue\/","title":{"rendered":"Kaj je mehanska utrujenost? Cikli\u010dna napetostna okvara"},"content":{"rendered":"<h1>Razumevanje mehanske utrujenosti<\/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\/sl\/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\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij 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=\"Prenosni uravnote\u017enik in analizator vibracij Balanset-1A v popolnem kompletu\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij Balanset-1A\">Prenosni balanser in analizator vibracij 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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">\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=\"Senzor vibracij Balanset-1A od blizu\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">Senzor vibracij<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">\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\u010dni senzor (laserski tahometer)\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">Opti\u010dni senzor (laserski tahometer)<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/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=\"Komplet za uravnote\u017eenje rotorjev Vibromera: torba za prena\u0161anje, ve\u010dkanalni pretvornik signala, ro\u010dni analizator, magnetna podlaga, senzorji vibracij in spiralni kabli.\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetna osnova.\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo Insize-60-kgf\">Magnetno stojalo Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/reflective-tape\/\" title=\"Odsevni trak\">\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=\"Odsevni trak\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/reflective-tape\/\" title=\"Odsevni trak\">Odsevni trak<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dni uravnote\u017eevalnik &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vsebina kompleta Balanset-1A z vmesni\u0161ko enoto, senzorji, tahometrom in dodatno opremo\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dni uravnote\u017eevalnik &quot;Balanset-1A&quot; OEM\">Dinami\u010dni uravnote\u017eevalnik \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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>Mehanska utrujenost<\/strong> (imenovana tudi utrujenost materiala ali preprosto utrujenost) je postopna, lokalizirana strukturna po\u0161kodba, ki nastane, ko je material izpostavljen ponavljajo\u010dim se ciklom obremenitve ali deformacije \u2013 tudi \u010de je najve\u010dja obremenitev v vsakem ciklu precej pod mejno natezno ali mejo elasti\u010dnosti materiala. Mikroskopske razpoke se pojavijo in \u0161irijo skozi tiso\u010de, milijone ali celo milijarde ciklov, dokler preostali presek ne more ve\u010d nositi obremenitve in se del zlomi, pogosto brez kakr\u0161nega koli vidnega opozorila. Pri rotacijskih strojih je to najpogostej\u0161i na\u010din okvare, ki tiho skraj\u0161uje \u017eivljenjsko dobo <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor\/\">rotorji<\/a>, gredi, zobniki, <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bearing-defects\/\">le\u017eaji<\/a>, pritrdilni elementi in nosilne konstrukcije, pri \u010demer na to neposredno vplivajo cikli\u010dne obremenitve, ki <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/vibration\/\">vibracije<\/a> nalaga stroju.<\/p>\n<h2>1. Opredelitev: Kaj je utrujenost \u2013 in zakaj je tako nevarna<\/h2>\n<p>Utrujenost je zahrbtna prav zato, ker ovr\u017ee prepri\u010danje, da je del \u00bbvaren\u00ab, \u010de posamezna obremenitev nikoli ne prese\u017ee njegove nazivne trdnosti. V skladu z <em>ponavljajo\u010de se<\/em> obremenitvi je napetost, ki je ne\u0161kodljiva, \u010de se pojavi enkrat, lahko smrtna, \u010de se ponovi deset milijonovkrat. \u0160koda se nevidno kopi\u010di, del ne ka\u017ee nobenih o\u010ditnih znakov po\u0161kodb, nato pa se med normalnim delovanjem nenadoma zlomi. Ker se pri vrte\u010dih napravah njihovi sestavni deli neprestano obremenjujejo \u2013 gred pri vsakem obratu do\u017eivi eno popolno spremembo smeri napetosti \u2013, je \u017ee majhna <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/unbalance\/\">neuravnote\u017eenost<\/a> ali <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/misalignment\/\">neporavnanost gredi<\/a> lahko v le nekaj tednih dose\u017ee ogromno \u0161tevilo delovnih ciklov. Razumevanje utrujenosti je zato klju\u010dnega pomena tako za varno zasnovo strojev kot za zanesljivo vsakodnevno delovanje.<\/p>\n<h2>2. Tri stopnje utrujenostne po\u0161kodbe<\/h2>\n<p>Utrujenostni lom ni enkraten dogodek, temve\u010d proces, ki se odvija skozi celotno \u017eivljenjsko dobo dela. Obi\u010dajno ga razdelimo na tri faze.<\/p>\n<h3>1. faza: Za\u010detek razpoke<\/h3>\n<ul>\n<li><strong>Lokacija:<\/strong> Razpoke se pojavijo na mestih koncentracije napetosti \u2013 luknjah, zaobljenih vogalih, utorih za klju\u010de, sledeh obdelave ali povr\u0161inskih napakah \u2013, kjer se lokalna napetost pove\u010da.<\/li>\n<li><strong>Mehanizem:<\/strong> Ponavljajo\u010da se lokalna plasti\u010dna deformacija povzro\u010di nastanek mikroskopske razpoke, ki je obi\u010dajno manj\u0161a od 0,1 mm.<\/li>\n<li><strong>Trajanje:<\/strong> Na gladkih, kakovostno obdelanih povr\u0161inah lahko za\u010detna faza porabi 50\u201390 % celotne utrujenostne \u017eivljenjske dobe.<\/li>\n<li><strong>Zaznavanje:<\/strong> Izredno te\u017eko; nastajajo\u010da razpoka je med obratovanjem ponavadi neopazna.<\/li>\n<\/ul>\n<h3>2. faza: \u0160irjenje razpoke<\/h3>\n<ul>\n<li><strong>Postopek:<\/strong> Razpoka z vsakim ciklom obremenitve napreduje za majhen prirastek.<\/li>\n<li><strong>Stopnja:<\/strong> Rast sledi Parisovemu zakonu \u2013 hitrost rasti razpoke je sorazmerna obmo\u010dju faktorja intenzivnosti napetosti, potenciranemu na dolo\u010deno potenco.<\/li>\n<li><strong>Videz:<\/strong> Gladka, obi\u010dajno polkro\u017ena ali elipti\u010dna sprednja stran razpoke<\/li>\n<li><strong>Pla\u017ene oznake:<\/strong> Koncentri\u010dni vzorci v obliki \u00bb \u0161koljke\u00ab na povr\u0161ini loma prikazujejo zaporedne faze rasti razpoke in so klasi\u010dni znak utrujenosti.<\/li>\n<li><strong>Trajanje:<\/strong> Pogosto 10\u201350 % celotne \u017eivljenjske dobe.<\/li>\n<\/ul>\n<h3>3. faza: Kon\u010dni zlom<\/h3>\n<ul>\n<li>Razpoka dose\u017ee kriti\u010dno velikost, pri kateri preostali ligament ne more ve\u010d prenesti obremenitve.<\/li>\n<li>Preostali presek se zlomi nenadoma in katastrofalno.<\/li>\n<li>Ta obmo\u010dje kon\u010dnega loma je grobo in neenakomerno, kar je v ostrem nasprotju z gladkim, izglajenim obmo\u010djem utrujenosti.<\/li>\n<li>To se skoraj vedno zgodi brez opozorila, med sicer normalnim delovanjem.<\/li>\n<\/ul>\n<p>Branje zlomljenega dela za nazaj \u2013 od grobega obmo\u010dja preobremenitve prek obalnih \u010drt do mesta za\u010detka razpoke \u2013 je klju\u010dna ve\u0161\u010dina analize okvar in pogosto natan\u010dno poka\u017ee, katera koncentracija napetosti je povzro\u010dila te\u017eavo.<\/p>\n<h3>Utrujenost zaradi visokega \u0161tevila ciklov v primerjavi z utrujenostjo zaradi nizkega \u0161tevila ciklov<\/h3>\n<p>In\u017eenirji nadalje razlikujejo <strong>utrujenost zaradi visokega \u0161tevila ciklov<\/strong> (nizke napetosti, prete\u017eno elasti\u010dno obna\u0161anje, \u017eivljenjska doba ve\u010d kot pribli\u017eno 10\u2074\u201310\u2075 ciklov \u2014 kar velja za ve\u010dino delov rotacijskih strojev) iz <strong>utrujenost zaradi majhnega \u0161tevila ciklov<\/strong> (visoke napetosti z znatno plasti\u010dno deformacijo v vsakem ciklu, kratka \u017eivljenjska doba, kar je zna\u010dilno za toplotno cikliranje in mo\u010dne prehodne obremenitve). Jekla pogosto ka\u017eejo <em>meja trajnosti<\/em> \u2014 napetost, pod katero je utrujenostna \u017eivljenjska doba dejansko neskon\u010dna \u2014 medtem ko \u0161tevilne aluminijeve in ne\u017eelezne zlitine nimajo prave meje vzdr\u017eljivosti in se pri kateri koli amplitudi napetosti s\u010dasoma po\u0161kodujejo.<\/p>\n<h2>3. Utrujenost pri rotacijskih strojih<\/h2>\n<h3>Utrujenost gredi<\/h3>\n<ul>\n<li><strong>Vzrok:<\/strong> Upogibne napetosti zaradi neuravnote\u017eenosti, neporavnave ali pre\u010dnih obremenitev.<\/li>\n<li><strong>Ciklus napetosti:<\/strong> Vrtljiva gred, ki je izpostavljena stalni upogibni obremenitvi, je pri vsakem obratu izpostavljena popolni spremembi napetosti (popolna sprememba napetosti, utrujenost zaradi vrtenja in upogibanja).<\/li>\n<li><strong>Pogoste lokacije:<\/strong> Zareze za klju\u010de, spremembe premera, ramena in vtisi \u2013 vse to so to\u010dke koncentracije napetosti.<\/li>\n<li><strong>Tipi\u010dna \u017eivljenjska doba:<\/strong> 10\u2077 do 10\u2079 ciklov, kar ustreza ve\u010d letom delovanja.<\/li>\n<li><strong>Zaznavanje:<\/strong> Pre\u010dna razpoka, ki se \u0161iri, se enkrat na obrat odpre in zapre, pri \u010demer nastane zna\u010dilen zvok 1\u00d7 in 2\u00d7 <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/shaft-crack\/\">razpoka gredi<\/a> vibracijski odtis; pogosto ga zamenjujejo s stacionarnim lokom, zato je fazno obna\u0161anje skozi <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/critical-speed\/\">kriti\u010dna hitrost<\/a> je treba preveriti.<\/li>\n<\/ul>\n<h3>Utrujenost le\u017eajev<\/h3>\n<ul>\n<li><strong>Mehanizem:<\/strong> Utrujenost zaradi valj\u010dnega stika, ki jo povzro\u010dajo cikli\u010dne hertzove sti\u010dne napetosti pod povr\u0161ino.<\/li>\n<li><strong>Rezultat:<\/strong> <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/spalling\/\">Odlu\u0161\u010denje<\/a> \u2014 lu\u0161\u010denje tekalnih povr\u0161in ali valj\u010dnih elementov.<\/li>\n<li><strong>Doba L10:<\/strong> Statisti\u010dna \u017eivljenjska doba, po kateri bo 10 % populacije le\u017eajev odpovedalo zaradi utrujenosti zaradi valj\u010dnega stika; to je standardna projektna osnova.<\/li>\n<li><strong>Zaznavanje:<\/strong> Ko se za\u010dne lu\u0161\u010denje, zna\u010dilno <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bearing-fault-frequencies\/\">frekvence napak le\u017eajev<\/a> se pojavijo v spektru in v <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/envelope-analysis\/\">analiza ovojnice<\/a>.<\/li>\n<\/ul>\n<h3>Utrujenost zob zobnika<\/h3>\n<ul>\n<li><strong>Utrujenost zaradi upogibanja:<\/strong> Razpoke se pojavijo na prehodu med zobom in korenino, kjer je obremenitev obremenjenega zoba najve\u010dja.<\/li>\n<li><strong>Utrujenost od stikov:<\/strong> Povr\u0161ina <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/pitting\/\">jamice<\/a> in lu\u0161\u010denje na delovni strani.<\/li>\n<li><strong>Cikli:<\/strong> Vsak stik mre\u017ee predstavlja en cikel obremenitve, zato se \u0161tevilo ciklov hitro pove\u010duje.<\/li>\n<li><strong>Neuspeh:<\/strong> Popoln zlom zoba ali postopno poslab\u0161anje povr\u0161ine, kar je vidno na <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/gear-mesh-frequency\/\">frekvenca ubiranja zobnikov<\/a> in njegove stranske pasove.<\/li>\n<\/ul>\n<h3>Utrujenost pritrdilnih elementov<\/h3>\n<ul>\n<li>Vijaki, ki so izpostavljeni izmeni\u010dnim obremenitvam zaradi vibracij, so tipi\u010dni primeri utrujenosti materiala.<\/li>\n<li>Razpoke se obi\u010dajno pojavijo na prvem navoju v matici, kjer je koncentracija napetosti najve\u010dja.<\/li>\n<li>Okvara se pojavi nenadoma in brez vidnih znakov.<\/li>\n<li>Okvarjen pritrdilni ali spojni vijak lahko povzro\u010di lo\u010ditev ali zru\u0161itev opreme, zaradi \u010desar je utrujenost pritrdilnih elementov resen varnostni problem.<\/li>\n<\/ul>\n<h3>Strukturna utrujenost<\/h3>\n<ul>\n<li>Ohi\u0161ja, <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bearing-pedestal\/\">podstavki<\/a> in so varilni spoji izpostavljeni cikli\u010dnim obremenitvam zaradi vibracij stroja.<\/li>\n<li>Vibracije ustvarjajo izmeni\u010dne napetosti, ki poganjajo proces.<\/li>\n<li>Razpoke se najpogosteje pojavljajo na varnih mestih, vogalih in geometrijskih prekinitvah.<\/li>\n<li>Posledica tega je postopno propadanje same konstrukcije, ki nosi stroj \u2013 kar pa stanje \u0161e poslab\u0161a <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/looseness\/\">mehanska ohlapnost<\/a> in \u0161e dodatno pove\u010da vibracije, kar povzro\u010da \u0161kodljiv za\u010daran krog.<\/li>\n<\/ul>\n<h2>4. Dejavniki, ki vplivajo na \u017eivljenjsko dobo<\/h2>\n<h3>Amplituda napetosti<\/h3>\n<ul>\n<li>\u017divljenjska doba se s pove\u010danjem amplitude napetosti strmo \u2013 nelinearno \u2013 zmanj\u0161uje.<\/li>\n<li>Uporabna pribli\u017ena zveza je: \u017eivljenjska doba \u221d 1\/napetost\u207f, pri \u010demer je n obi\u010dajno med 6 in 10.<\/li>\n<li>Prakti\u010dne posledice so ogromne: \u017ee majhno zmanj\u0161anje izmeni\u010dne obremenitve lahko \u017eivljenjsko dobo podalj\u0161a za ve\u010dkrat.<\/li>\n<li>Ker je napetost, ki jo povzro\u010dajo vibracije, izmeni\u010dna komponenta, <strong>Zmanj\u0161anje vibracij neposredno podalj\u0161uje \u017eivljenjsko dobo<\/strong>.<\/li>\n<\/ul>\n<h3>Povpre\u010dna napetost<\/h3>\n<ul>\n<li>Enakomerna (povpre\u010dna) napetost, ki deluje skupaj z izmeni\u010dno napetostjo, zmanj\u0161a dovoljeno izmeni\u010dno amplitudo.<\/li>\n<li>Vi\u0161ja povpre\u010dna napetost zmanj\u0161uje utrujalno trdnost (kar je prikazano na diagramih Goodmana, Gerberja ali Soderberga).<\/li>\n<li>Prednapeti ali predobremenjeni elementi so zato bolj ob\u010dutljivi.<\/li>\n<\/ul>\n<h3>Koncentracije stresa<\/h3>\n<ul>\n<li>Luknje, koti, utori in navoji na nekaterih mestih pove\u010dajo nazivno napetost.<\/li>\n<li>Faktor koncentracije napetosti (K<sub>t<\/sub>) to mno\u017eenje izrazi v \u0161tevil\u010dni vrednosti.<\/li>\n<li>Razpoke se skoraj vedno pojavijo prav na teh mestih.<\/li>\n<li>Veliki radiji in izogibanje ostrim vogalom so prva obrambna linija.<\/li>\n<\/ul>\n<h3>Stanje povr\u0161ine<\/h3>\n<ul>\n<li>Povr\u0161inska obdelava je pomembna \u2013 gladke povr\u0161ine so veliko bolj odporne proti utrujenosti kot grobe.<\/li>\n<li>Vdolbine, praske in <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/corrosion\/\">korozija<\/a> vdolbine so \u017ee oblikovana mesta za nastanek razpok.<\/li>\n<li>Postopki, kot sta kroglicno utrjevanje in nitriranje, povzro\u010dajo tla\u010dne ostale napetosti na povr\u0161ini in znatno izbolj\u0161ajo odpornost proti utrujenosti.<\/li>\n<\/ul>\n<h3>Okolje<\/h3>\n<ul>\n<li><strong>Korozijska utrujenost:<\/strong> Korozivno okolje pospe\u0161i \u0161irjenje razpok in lahko povsem izni\u010di mejo utrujenosti.<\/li>\n<li><strong>Temperatura:<\/strong> Vi\u0161je temperature na splo\u0161no zmanj\u0161ujejo utrujalno trdnost in pove\u010dujejo vpliv lezanja.<\/li>\n<li><strong>Pogostost:<\/strong> Zelo visoke ali zelo nizke frekvence ciklov lahko vplivajo na potek utrujanja, \u0161e posebej kadar gre za korozijo ali lezanje.<\/li>\n<\/ul>\n<h2>5. Strategije prepre\u010devanja skozi celoten \u017eivljenjski cikel<\/h2>\n<h3>Faza na\u010drtovanja<\/h3>\n<ul>\n<li>Odpravite ali zmanj\u0161ajte koncentracije napetosti z velikimi zaobljenimi prehodi.<\/li>\n<li>Pri projektiranju upo\u0161tevajte ustrezne varnostne faktorje za utrujenost (obi\u010dajno 2\u20134).<\/li>\n<li>Izberite materiale z dobrimi lastnostmi pri utrujenosti.<\/li>\n<li>Z analizo kon\u010dnih elementov poi\u0161\u010dite obmo\u010dja z visoko napetostjo in se po mo\u017enosti izogibajte izdelavi lukenj in zarezi na teh mestih.<\/li>\n<\/ul>\n<h3>Proizvodnja<\/h3>\n<ul>\n<li>Izbolj\u0161ajte kakovost povr\u0161ine na kriti\u010dnih, mo\u010dno obremenjenih delih.<\/li>\n<li>Uporabite povr\u0161inske obdelave, kot sta kroglicno utrjevanje in povr\u0161insko utrjevanje.<\/li>\n<li>Z ustrezno toplotno obdelavo dose\u017eite optimalno utrujalno trdnost.<\/li>\n<li>Izogibajte se obdelovalnim sledem, ki potekajo pravokotno na smer glavne napetosti.<\/li>\n<\/ul>\n<h3>Operacija<\/h3>\n<ul>\n<li><strong>Zmanj\u0161anje vibracij:<\/strong> Dobro <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/uravnotezenje\/\">uravnote\u0415\u0455enje<\/a> in natan\u010dnostjo <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/laser-shaft-alignment\/\">poravnava gredi<\/a> odpravite izmeni\u010dne napetosti \u017ee pri viru.<\/li>\n<li><strong>Izogibajte se preobremenitvi:<\/strong> Delujte v okviru projektnih omejitev.<\/li>\n<li><strong>Prepre\u010dite resonanco:<\/strong> Izogibajte se kriti\u010dnim hitrostim, pri katerih <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/resonance\/\">resonanca<\/a> lahko ve\u010dkratno pove\u010da dinami\u010dno obremenitev.<\/li>\n<li><strong>Prepre\u010devanje korozije:<\/strong> Za\u0161\u010ditni premazi in zaviralci.<\/li>\n<\/ul>\n<h3>Vzdr\u017eevanje in spremljanje<\/h3>\n<ul>\n<li>Redno preverjajte, ali so prisotne razpoke, in sicer z vizualnim pregledom ter <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/non-destructive-testing\/\">nedestruktivno testiranje<\/a> metode.<\/li>\n<li>Spremljajte vibracije, da boste \u010dim prej opazili nastajajo\u010do razpoko.<\/li>\n<li>Komponente je treba umakniti iz uporabe ob izteku njihove izra\u010dunane utrujenostne \u017eivljenjske dobe, namesto da bi \u010dakali na okvaro.<\/li>\n<li>Po\u0161kodbe na povr\u0161ini takoj popravite, saj je sve\u017ea praska vir prihodnjih razpok.<\/li>\n<\/ul>\n<p>Ker vibracije <em>je<\/em> Ker so vibracije vir izmeni\u010dne napetosti, s katero se utrujenost napaja, je vzdr\u017eevanje nizke ravni vibracij eden najbolj stro\u0161kovno u\u010dinkovitih ukrepov za prepre\u010devanje utrujenosti. V praksi je prenosni dvokanalni merilni instrument, kot je <a href=\"https:\/\/vibromera.eu\/sl\/izdelek\/balanset-1\/\">Balanset-1A<\/a> omogo\u010da serviserju, da uravnote\u017ei rotor v njegovih lastnih le\u017eajih in preveri, ali se je preostala amplituda 1\u00d7 zmanj\u0161ala, s \u010dimer se neposredno zmanj\u0161a cikli\u010dna upogibna napetost, ki jo gred prena\u0161a pri vsakem obratu, ter podalj\u0161a njeno utrujenostno \u017eivljenjsko dobo. \u010ce \u017eelimo to prednost in slabost izraziti v \u0161tevilkah, <a href=\"https:\/\/vibromera.eu\/sl\/calculators\/fatigue-life-calculator\/\">S-N \/ Basquinov kalkulator utrujenostne \u017eivljenjske dobe<\/a> ka\u017ee, kako strmo nara\u0161\u010da utrujenostna \u017eivljenjska doba, ko zmanj\u0161ujete amplitudo napetosti, in <a href=\"https:\/\/vibromera.eu\/sl\/calculators\/centrifugal-force-unbalance\/\">kalkulator centrifugalne sile iz neravnovesja<\/a> izra\u010duna cikli\u010dno silo, ki jo dolo\u010dena stopnja neuravnote\u017eenosti prena\u0161a na le\u017eaje in gred.<\/p>\n<p>Na kratko, mehanska utrujenost je temeljni na\u010din okvare, pri katerem se nakopi\u010dene cikli\u010dne po\u0161kodbe spremenijo v nenaden, pogosto katastrofalen lom. Prepre\u010devanje koncentracij napetosti pri projektiranju, izbira ustreznih materialov in obdelav ter \u2013 kar je najpomembneje \u2013 omejevanje vibracij z dobrim uravnote\u017eenjem in poravnavo so klju\u010dni ukrepi, ki to prepre\u010dujejo in zagotavljajo dolgo ter zanesljivo \u017eivljenjsko dobo strojev.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/\">\u2190 Nazaj na glavno kazalo<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Spoznajte mehansko utrujenost, progresivno po\u0161kodbo zaradi ponavljajo\u010dih se ciklov obremenitve, ki povzro\u010da razpoke in okvare v gredeh, zobnikih in konstrukcijah, tudi pri napetostih pod mejo te\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\/sl\/wp-json\/wp\/v2\/glossary\/116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/116\/revisions"}],"predecessor-version":[{"id":101382,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/116\/revisions\/101382"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/media?parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/categories?post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/tags?post=116"}],"curies":[{"name":"delovni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}