{"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\/ro\/glossary\/shaft-crack\/","title":{"rendered":"Ce este o fisur\u0103 la arbore? Detectare \u0219i diagnosticare"},"content":{"rendered":"<h1>\u00cen\u021belegerea fisurilor arborelui \u00een ma\u0219inile rotative<\/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\/ro\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\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=\"Prim-plan senzor de vibra\u021bii 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Senzor optic (tahometru cu laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic 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=\"Baza magnetic\u0103.\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\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=\"Band\u0103 reflectorizant\u0103\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &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=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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>fisur\u0103 a axului<\/strong> este o fisur\u0103 sau o discontinuitate a unui arbore rotativ care apare ca urmare a oboselii materialului, a concentr\u0103rii de tensiuni sau a unui defect al materialului. Fisurile \u00eencep aproape \u00eentotdeauna la suprafa\u021b\u0103 \u0219i se propag\u0103 spre interior, avans\u00e2nd perpendicular pe direc\u021bia tensiunii maxime de trac\u021biune. \u00cen cazul ma\u0219inilor rotative, acestea se num\u0103r\u0103 printre cele mai periculoase defecte, deoarece o fisur\u0103 se poate transforma dintr-o cr\u0103p\u0103tur\u0103 imperceptibil\u0103 \u00eentr-o ruptur\u0103 complet\u0103 a arborelui \u00een doar c\u00e2teva ore sau zile, put\u00e2nd duce la o defec\u021biune catastrofal\u0103, care pune via\u021ba \u00een pericol. Singurul aspect pozitiv este c\u0103 o fisur\u0103 \u00een curs de dezvoltare se tr\u0103deaz\u0103 prin <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> semnal \u2014 \u00een special printr-o component\u0103 ascendent\u0103 de 2\u00d7 (de dou\u0103 ori pe rota\u021bie) \u2014 at\u00e2t de riguros <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration-analysis\/\">analiza vibra\u021biilor<\/a> ofer\u0103 o \u0219ans\u0103 real\u0103 de a o prinde \u00eenainte s\u0103-\u021bi scape.<\/p>\n<h2>1. Defini\u021bie: Ce este o fisur\u0103 \u00een arbore?<\/h2>\n<p>Din punct de vedere mecanic, o fisur\u0103 este o zon\u0103 \u00een care arborele \u0219i-a pierdut continuitatea \u0219i, prin urmare, rigiditatea. Pe m\u0103sur\u0103 ce arborele se rote\u0219te, fisura se deschide \u0219i se \u00eenchide alternativ sub ac\u021biunea efortului de \u00eencovoiere oscilant, iar aceast\u0103 &#8220;respira\u021bie&#8221; face ca rigiditatea arborelui s\u0103 varieze \u00een func\u021bie de pozi\u021bia unghiular\u0103. Aceast\u0103 asimetrie st\u0103 la baza semn\u0103turilor de diagnostic discutate mai jos \u0219i este ceea ce diferen\u021biaz\u0103 o fisur\u0103 transversal\u0103 adev\u0103rat\u0103 de o curbur\u0103 permanent\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/shaft-bow\/\">\u00eencovoierea arborelui<\/a> or a simple <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a>. Fenomenul mai amplu, \u00een care fisura a avansat suficient \u00eenc\u00e2t s\u0103 modifice comportamentul \u00eentregului rotor, este uneori abordat sub titlul de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/cracked-rotor\/\">rotor fisurat<\/a>.<\/p>\n<h2>2. Cauze frecvente ale fisurilor din arbori<\/h2>\n<h3>Oboseala provocat\u0103 de solicit\u0103ri ciclice<\/h3>\n<p>Cauza principal\u0103 a deterior\u0103rii echipamentelor rotative este oboseala materialului, care se acumuleaz\u0103 ciclu cu ciclu:<\/p>\n<ul>\n<li><strong>Oboseala la \u00eencovoiere:<\/strong> un arbore rotativ cu rigiditate inegal\u0103 sau cu sarcini descentrate este supus unei solicit\u0103ri ciclice de \u00eencovoiere complet inversate.<\/li>\n<li><strong>Oboseala la torsiune:<\/strong> cuplul oscilant din arborii de transmisie a puterii provoac\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/torsional-vibration\/\">vibra\u021bii torsionale<\/a> and fatigue.<\/li>\n<li><strong>Oboseal\u0103 la cicluri repetate:<\/strong> De-a lungul anilor se acumuleaz\u0103 milioane de cicluri, astfel \u00eenc\u00e2t chiar \u0219i solicit\u0103rile moderate pot duce \u00een cele din urm\u0103 la apari\u021bia unei fisuri.<\/li>\n<li><strong>Concentra\u021bia de tensiuni:<\/strong> canelurile, orificiile transversale, rotunjirile \u0219i alte discontinuit\u0103\u021bi geometrice amplific\u0103 local tensiunile \u0219i constituie punctele obi\u0219nuite de ini\u021biere a fisurilor.<\/li>\n<\/ul>\n<h3>Condi\u021bii de func\u021bionare<\/h3>\n<ul>\n<li><strong>Dezechilibru excesiv:<\/strong> For\u021ba centrifug\u0103 ridicat\u0103 genereaz\u0103 o solicitare ciclic\u0103 de \u00eencovoiere.<\/li>\n<li><strong>Nealiniere:<\/strong> momentele de \u00eencovoiere din <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/misalignment\/\">nealiniere<\/a> s\u0103 accelereze oboseala.<\/li>\n<li><strong>Func\u021bionare prin rezonan\u021b\u0103:<\/strong> cu o vitez\u0103 egal\u0103 cu sau apropiat\u0103 de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">vitez\u0103 critic\u0103<\/a> provoac\u0103 deforma\u021bii \u0219i tensiuni mari.<\/li>\n<li><strong>Suprasarcin\u0103:<\/strong> func\u021bion\u00e2nd peste limitele prev\u0103zute de proiect.<\/li>\n<li><strong>Stres termic:<\/strong> \u00eenc\u0103lzirea sau r\u0103cirea rapid\u0103 \u0219i gradientele termice abrupte, care pot genera, de asemenea, un fenomen tranzitoriu <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/thermal-bow\/\">arc termic<\/a>.<\/li>\n<\/ul>\n<h3>Defecte de material \u0219i de fabrica\u021bie<\/h3>\n<ul>\n<li><strong>Incluziuni materiale:<\/strong> zgur\u0103, goluri sau corpuri str\u0103ine \u00een materialul arborelui.<\/li>\n<li><strong>Tratament termic necorespunz\u0103tor:<\/strong> c\u0103lire sau revenire necorespunz\u0103toare.<\/li>\n<li><strong>Defecte de prelucrare:<\/strong> urme de scule, crest\u0103turi sau zg\u00e2rieturi care ac\u021bioneaz\u0103 ca puncte de concentrare a tensiunii.<\/li>\n<li><strong>Coroziune punctiform\u0103:<\/strong> gropi\u021be de suprafa\u021b\u0103 care servesc drept puncte de ini\u021biere a fisurilor.<\/li>\n<li><strong>Frecare:<\/strong> la interfe\u021bele cu fixare prin presare sau la canelurile de fixare, unde mi\u0219c\u0103rile microscopice deterioreaz\u0103 suprafa\u021ba.<\/li>\n<\/ul>\n<h3>Evenimente opera\u021bionale<\/h3>\n<ul>\n<li><strong>Situa\u021bii de dep\u0103\u0219ire a vitezei:<\/strong> o dep\u0103\u0219ire de vitez\u0103 accidental\u0103 sau de urgen\u021b\u0103 care genereaz\u0103 solicit\u0103ri mari.<\/li>\n<li><strong>Severe rubs:<\/strong> <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-rub\/\">frecare rotor<\/a> Contactul genereaz\u0103 c\u0103ldur\u0103 \u0219i concentrarea local\u0103 a stresului<\/li>\n<li><strong>Solicitare la impact:<\/strong> \u00cenc\u0103rc\u0103ri bru\u0219te cauzate de perturb\u0103ri ale procesului sau \u0219ocuri mecanice<\/li>\n<li><strong>Repara\u021bii anterioare:<\/strong> sudur\u0103 sau prelucrare care genereaz\u0103 tensiuni reziduale.<\/li>\n<\/ul>\n<h2>3. Simptomele vibra\u021biilor cauzate de o fisur\u0103 a arborelui<\/h2>\n<h3>Componenta caracteristic\u0103 2\u00d7<\/h3>\n<p>Semn\u0103tura distinctiv\u0103 a unei fisuri transversale a arborelui este o pronun\u021bat\u0103 <strong>2\u00d7 (a doua armonic\u0103)<\/strong> component\u0103, iar mecanismul care st\u0103 la baza acesteia merit\u0103 \u00een\u021beles cu precizie:<\/p>\n<ul>\n<li>Pe m\u0103sur\u0103 ce arborele se rote\u0219te, fisura se deschide \u0219i se \u00eenchide de dou\u0103 ori la fiecare rota\u021bie.<\/li>\n<li>C\u00e2nd fisura se afl\u0103 pe partea de compresiune (\u00een partea inferioar\u0103 a cursei), aceasta se \u00eenchide, iar arborele devine mai rigid.<\/li>\n<li>C\u00e2nd se deplaseaz\u0103 spre partea tensionat\u0103 (partea superioar\u0103 a rota\u021biei), se deschide, iar arborele devine mai flexibil.<\/li>\n<li>Aceast\u0103 oscila\u021bie a rigidit\u0103\u021bii, care are loc de dou\u0103 ori pe rota\u021bie, constituie ea \u00eens\u0103\u0219i o func\u021bie de for\u021bare de ordinul 2.<\/li>\n<li>Amplitudinea de 2\u00d7 cre\u0219te pe m\u0103sur\u0103 ce fisura se ad\u00e2nce\u0219te \u0219i asimetria rigidit\u0103\u021bii se accentueaz\u0103 \u2014 motiv pentru care <em>tendin\u0163\u0103<\/em> este la fel de important ca nivelul absolut.<\/li>\n<\/ul>\n<h3>Indicatori suplimentari de vibra\u021bii<\/h3>\n<ul>\n<li><strong>1\u00d7 changes:<\/strong> o cre\u0219tere treptat\u0103 a componentei 1\u00d7 pe m\u0103sur\u0103 ce rigiditatea se modific\u0103 \u0219i se formeaz\u0103 o curbur\u0103 rezidual\u0103.<\/li>\n<li><strong>Armonici superioare:<\/strong> Pe m\u0103sur\u0103 ce severitatea cre\u0219te, pot ap\u0103rea componentele 3\u00d7 \u0219i 4\u00d7.<\/li>\n<li><strong>Phase shifts:<\/strong> a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> modific\u0103rile unghiului \u00een timpul pornirii sau al deceler\u0103rii \u0219i la viteze diferite.<\/li>\n<li><strong>Comportamentul \u00een func\u021bie de vitez\u0103:<\/strong> Vibra\u021biile pot varia neliniar \u00een func\u021bie de vitez\u0103.<\/li>\n<li><strong>Sensibilitate la temperatur\u0103:<\/strong> M\u0103sur\u0103torile pot urm\u0103ri expansiunea termic\u0103 pe m\u0103sur\u0103 ce fisura se deschide sau se \u00eenchide.<\/li>\n<\/ul>\n<h3>Comportamentul la pornire \u0219i la decelerare<\/h3>\n<ul>\n<li>Componenta 2\u00d7 se comport\u0103 neobi\u0219nuit \u00een timpul tranzi\u021biilor.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bode-plot\/\">Diagrama Bode<\/a> poate prezenta dou\u0103 v\u00e2rfuri de rezonan\u021b\u0103, c\u00e2te unul la jum\u0103tatea fiec\u0103rei viteze critice, pe m\u0103sur\u0103 ce excita\u021bia de 2\u00d7 parcurge intervalul.<\/li>\n<li>Evolu\u021bia fazelor componentei 1\u00d7 poate diferi semnificativ de un r\u0103spuns normal la dezechilibru.<\/li>\n<\/ul>\n<h2>4. Metode de detectare<\/h2>\n<h3>Monitorizarea vibra\u021biilor \u0219i m\u0103sur\u0103torile pe teren<\/h3>\n<p>Deoarece avertizarea este spectral\u0103 \u0219i progresiv\u0103, m\u0103surarea periodic\u0103 reprezint\u0103 prima linie de ap\u0103rare:<\/p>\n<ul>\n<li><strong>Analiza tendin\u021bei:<\/strong> urm\u0103ri\u021bi evolu\u021bia raportului 2\u00d7\/1\u00d7 \u00een timp; o cre\u0219tere constant\u0103 constituie un semnal de alarm\u0103, iar un raport mai mare de aproximativ 0,5 necesit\u0103 o investiga\u021bie. Schimb\u0103rile bru\u0219te de tendin\u021b\u0103 sunt la fel de suspecte.<\/li>\n<li><strong>Analiza spectral\u0103:<\/strong> routine <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/fft\/\">FFT<\/a> m\u0103sur\u0103tori, comparate cu datele istorice <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/baseline\/\">linie de baz\u0103<\/a>, eviden\u021biaz\u0103 apari\u021bia sau cre\u0219terea unui v\u00e2rf 2\u00d7.<\/li>\n<li><strong>Analiza tranzitorie:<\/strong> <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/waterfall-plot\/\">diagrame \u00een cascad\u0103<\/a> iar diagramele Bode de la pornire \u0219i p\u00e2n\u0103 la oprire indic\u0103 un comportament neobi\u0219nuit \u00een momentul trecerii prin viteza critic\u0103.<\/li>\n<\/ul>\n<p>M\u0103surarea amplitudinii \u0219i a fazei componentelor de 1\u00d7 \u0219i 2\u00d7 este exact opera\u021biunea pe care un analizor portabil cu dou\u0103 canale o transform\u0103 \u00eentr-o procedur\u0103 de rutin\u0103. Cu un instrument cu referin\u021b\u0103 de faz\u0103, precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a>, un tehnician poate \u00eenregistra vectorii 1\u00d7 \u0219i 2\u00d7 la rulmen\u021bi \u00een timpul func\u021bion\u0103rii normale \u0219i la fiecare decelerare, cre\u00e2nd astfel o tendin\u021b\u0103 care permite distingerea unui 2\u00d7 benign de unul cu tendin\u021b\u0103 ascendent\u0103 \u2014 diferen\u021ba dintre o oprire planificat\u0103 \u0219i o avarie neprev\u0103zut\u0103.<\/p>\n<h3>Metode f\u0103r\u0103 vibra\u021bii<\/h3>\n<p>O tendin\u021b\u0103 suspect\u0103 a vibra\u021biilor trebuie \u00eentotdeauna confirmat\u0103 prin <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/non-destructive-testing\/\">teste nedistructive<\/a>:<\/p>\n<ul>\n<li><strong>Controlul cu particule magnetice (MPI):<\/strong> detecteaz\u0103 cu o fiabilitate ridicat\u0103 fisurile de la suprafa\u021b\u0103 \u0219i cele apropiate de suprafa\u021b\u0103 pe arborii feromagnetici accesibili; o component\u0103 esen\u021bial\u0103 a inspec\u021biilor de rutin\u0103 efectuate \u00een timpul opririlor.<\/li>\n<li><strong>Testarea cu ultrasunete (UT):<\/strong> detecteaz\u0103 fisurile interne \u0219i cele de suprafa\u021b\u0103 \u0219i le poate identifica \u00eenainte ca vreun semn de vibra\u021bie s\u0103 apar\u0103; necesit\u0103 echipament specializat \u0219i personal calificat \u0219i reprezint\u0103 metoda preferat\u0103 pentru arborii critici.<\/li>\n<li><strong>Inspec\u021bia cu penetrant colorat:<\/strong> o metod\u0103 simpl\u0103 pentru fisurile de suprafa\u021b\u0103, care necesit\u0103 cur\u0103\u021barea \u0219i preg\u0103tirea suprafe\u021bei, util\u0103 pentru zonele accesibile \u00een timpul unei opriri.<\/li>\n<li><strong>Controlul prin curen\u021bi turbionari:<\/strong> detectarea f\u0103r\u0103 contact a fisurilor de suprafa\u021b\u0103, potrivit\u0103 pentru inspec\u021bia automatizat\u0103 \u0219i func\u021bional\u0103 at\u00e2t pe materiale magnetice, c\u00e2t \u0219i pe cele nemagnetice.<\/li>\n<\/ul>\n<h2>5. M\u0103suri de reac\u021bie \u0219i corective<\/h2>\n<h3>M\u0103suri imediate \u00een cazul detect\u0103rii<\/h3>\n<ol>\n<li><strong>Cre\u0219terea frecven\u021bei monitoriz\u0103rii:<\/strong> trece\u021bi de la frecven\u021ba lunar\u0103 la cea s\u0103pt\u0103m\u00e2nal\u0103 sau zilnic\u0103.<\/li>\n<li><strong>Reduce\u021bi severitatea regimului de func\u021bionare:<\/strong> reduce\u021bi viteza sau sarcina, acolo unde este posibil.<\/li>\n<li><strong>Planifica\u021bi o oprire:<\/strong> Programa\u021bi repara\u021bia sau \u00eenlocuirea c\u00e2t mai cur\u00e2nd posibil \u0219i \u00een siguran\u021b\u0103<\/li>\n<li><strong>Efectua\u021bi examinarea nedistructiv\u0103 (NDE):<\/strong> s\u0103 confirme prezen\u021ba fisurii \u0219i s\u0103 evalueze direct gravitatea acesteia.<\/li>\n<li><strong>Evaluarea riscurilor:<\/strong> s\u0103 decid\u0103 \u00een mod oficial dac\u0103 continuarea exploat\u0103rii este sigur\u0103.<\/li>\n<\/ol>\n<h3>Solu\u021bii pe termen lung<\/h3>\n<ul>\n<li><strong>\u00cenlocuirea arborelui:<\/strong> cel mai eficient remediu pentru o fisur\u0103 confirmat\u0103.<\/li>\n<li><strong>Repara\u021bii (\u00een cazuri limitate):<\/strong> unele fisuri pot fi \u00eendep\u0103rtate prin prelucrare mecanic\u0103 \u0219i reparate prin sudur\u0103, dar numai dup\u0103 o evaluare efectuat\u0103 de un specialist.<\/li>\n<li><strong>Analiza cauzelor fundamentale:<\/strong> s\u0103 se stabileasc\u0103 cauza apari\u021biei fisurii, pentru a se evita repetarea acesteia.<\/li>\n<li><strong>Modific\u0103ri de proiectare:<\/strong> s\u0103 reduc\u0103 concentr\u0103rile de tensiune, s\u0103 \u00eembun\u0103t\u0103\u021beasc\u0103 alegerea materialelor sau s\u0103 modifice regimul de func\u021bionare.<\/li>\n<\/ul>\n<h2>6. Strategii de prevenire<\/h2>\n<h3>Design phase<\/h3>\n<ul>\n<li>Elimina\u021bi col\u021burile ascu\u021bite \u0219i concentr\u0103rile de tensiune.<\/li>\n<li>Folosi\u021bi raze de racordare generoase la schimb\u0103rile de diametru.<\/li>\n<li>Alege\u021bi materiale adecvate nivelului de solicitare \u0219i mediului de utilizare.<\/li>\n<li>Efectua\u021bi o analiz\u0103 a tensiunilor prin metoda elementelor finite pentru geometria critic\u0103.<\/li>\n<li>Aplica\u021bi tratamente de suprafa\u021b\u0103, cum ar fi sablarea cu alice metalice sau nitrurarea, pentru a spori rezisten\u021ba la oboseal\u0103.<\/li>\n<\/ul>\n<h3>Faza opera\u021bional\u0103<\/h3>\n<ul>\n<li>Men\u021bine\u021bi o bun\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/balance-quality\/\">calitatea echilibrului<\/a> pentru a reduce la minimum solicitarea de \u00eencovoiere ciclic\u0103.<\/li>\n<li>Asigura\u021bi-v\u0103 c\u0103 alinierea este precis\u0103.<\/li>\n<li>Evita\u021bi func\u021bionarea prelungit\u0103 la viteze critice.<\/li>\n<li>Preveni\u021bi dep\u0103\u0219irea vitezei.<\/li>\n<li>Controla\u021bi tensiunile termice prin proceduri adecvate de \u00eenc\u0103lzire \u0219i r\u0103cire.<\/li>\n<\/ul>\n<h3>Faza de \u00eentre\u021binere<\/h3>\n<ul>\n<li>Efectua\u021bi inspec\u021bii periodice folosind metodele adecvate de testare nedistructiv\u0103.<\/li>\n<li>Efectua\u021bi o m\u0103surare a vibra\u021biilor <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/trending\/\">tendin\u021be<\/a> program de depistare a simptomelor incipiente.<\/li>\n<li>Efectua\u021bi periodic reechilibrarea pentru a men\u021bine la un nivel sc\u0103zut solicit\u0103rile cauzate de oboseal\u0103 \u2014 la fa\u021ba locului <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrarea-campului\/\">echilibrarea la fa\u021ba locului<\/a> face ca aceast\u0103 opera\u021biune s\u0103 fie posibil\u0103 f\u0103r\u0103 a fi necesar\u0103 demontarea rotorului.<\/li>\n<li>Asigura\u021bi \u00eentre\u021binerea protec\u021biei anticorozive \u0219i a straturilor de acoperire.<\/li>\n<\/ul>\n<p>Fisurile din arbori reprezint\u0103 una dintre cele mai grave forme de defectare la utilajele rotative, iar consecin\u021bele neidentific\u0103rii acestora se traduc prin bunuri distruse \u0219i vie\u021bi omene\u0219ti puse \u00een pericol. Combina\u021bia este cea care func\u021bioneaz\u0103: monitorizarea vibra\u021biilor pentru a semnaliza din timp semn\u0103tura caracteristic\u0103 2\u00d7, precum \u0219i inspec\u021biile periodice nedistructive pentru a confirma \u0219i a evalua ceea ce vibra\u021biile doar sugereaz\u0103. \u00cempreun\u0103, acestea permit o \u00eentre\u021binere planificat\u0103 \u0219i controlat\u0103 \u2014 \u0219i \u00eempiedic\u0103 transformarea unei fisuri fine \u0219i silen\u021bioase \u00eentr-o fractur\u0103 brusc\u0103 \u0219i violent\u0103.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Afla\u021bi despre fisurile arborelui ma\u0219inilor rotative, cauzele acestora, semn\u0103turile vibra\u021biilor caracteristice, inclusiv componentele 2X, \u0219i metodele critice de detectare pentru a preveni defec\u021biunile catastrofale.<\/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\/ro\/wp-json\/wp\/v2\/glossary\/234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/234\/revisions"}],"predecessor-version":[{"id":101407,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/234\/revisions\/101407"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}