{"id":143,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/impact-testing\/"},"modified":"2026-05-23T22:36:55","modified_gmt":"2026-05-23T22:36:55","slug":"impact-testing","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fi\/glossary\/impact-testing\/","title":{"rendered":"Mik\u00e4 on iskukykytestaus? Modaalianalyysitekniikka"},"content":{"rendered":"<h1>Iskutestauksen ymm\u00e4rt\u00e4minen<\/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\/fi\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori 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 kannettava tasapainotin ja v\u00e4r\u00e4htelyanalysaattori, t\u00e4ydellinen sarja\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori Balanset-1A\">Kannettava tasapainotin &#038; t\u00e4rin\u00e4analysaattori 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\">&euro;<\/span>1,975.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">\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=\"Balanset-1A:n t\u00e4rin\u00e4anturin l\u00e4hikuva\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">T\u00e4rin\u00e4anturi<\/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\">&euro;<\/span>90.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">\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=\"Optinen anturi (lasertakometri)\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">Optinen anturi (lasertakometri)<\/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\">&euro;<\/span>124.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera-roottorin tasapainotussarja: kantolaukku, monikanavainen signaalimuunnin, k\u00e4dess\u00e4 pidett\u00e4v\u00e4 analysaattori, magneettijalusta, t\u00e4rin\u00e4anturit ja kierretyt kaapelit.\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/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\">&euro;<\/span>6,803.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta 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=\"Magneettipohja.\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta Insize-60-kgf\">Magneettinen jalusta 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\">&euro;<\/span>46.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">\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=\"Heijastava nauha\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">Heijastava nauha<\/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\">&euro;<\/span>10.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &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=\"Balanset-1A-pakkauksen sis\u00e4lt\u00f6, jossa on liit\u00e4nt\u00e4yksikk\u00f6, anturit, kierroslukumittari ja lis\u00e4varusteet\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &quot;Balanset-1A&quot; OEM\">Dynaaminen tasapainotin \"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\">&euro;<\/span>1,735.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/143?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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>Iskutestaus<\/strong> - jota kutsutaan my\u00f6s impulssitestaukseksi tai iskumodaalianalyysiksi - on er\u00e4\u00e4nlainen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/modal-analysis\/\">modaalinen testaus<\/a> tekniikka, jossa k\u00e4ytet\u00e4\u00e4n instrumentoitua iskuvasaraa laajakaistaisen voimaimpulssin kohdistamiseksi rakenteeseen ja samalla mitataan tuloksena oleva <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/vibration\/\">t\u00e4rin\u00e4<\/a> vastauksen kanssa <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/accelerometer\/\">kiihtyvyysmittarit<\/a>. Se laskee voima- ja vastesignaalien perusteella <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/frequency-response-function\/\">taajuusvastefunktiot<\/a> (FRF), jotka osoittavat, miten rakenne reagoi kullakin taajuudella, mik\u00e4 paljastaa sen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/natural-frequency\/\">ominaistaajuudet<\/a>, <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/mode-shape\/\">moodimuodot<\/a>, ja <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/damping\/\">vaimennus<\/a> suhdeluvut \u2014 tiedot, joita tarvitaan dynaamisen k\u00e4ytt\u00e4ytymisen ymm\u00e4rt\u00e4miseen ja diagnosointiin <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/resonance\/\">resonanssi<\/a> ongelmia.<\/p>\n<p>Iskutestaus on k\u00e4yt\u00e4nn\u00f6llinen vaihtoehto ravistelijamodaalitestaukselle, sill\u00e4 se tuottaa samanlaista tietoa ilman raskaita, kalliita s\u00e4hk\u00f6magneettisia ravistimia ja monimutkaisia kiinnityslaitteita, joita ravistelutestaus vaatii. Sit\u00e4 k\u00e4ytet\u00e4\u00e4n laajalti resonanssivianm\u00e4\u00e4ritykseen, rakennemuutosten validointiin ja \u00e4\u00e4rellisten elementtimallien korrelointiin kone- ja rakennedynamiikkaty\u00f6ss\u00e4. Se on l\u00e4heist\u00e4 sukua yksinkertaisemmalle <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/bump-test\/\">bump-testi<\/a>, joka k\u00e4ytt\u00e4\u00e4 samaa impulssiperiaatetta yhden ominaistaajuuden l\u00f6yt\u00e4miseksi.<\/p>\n<h2>1. Perusperiaate<\/h2>\n<p>Menetelm\u00e4 perustuu yksinkertaiseen tosiasiaan: lyhyt, ter\u00e4v\u00e4 isku her\u00e4tt\u00e4\u00e4 kerralla laajan taajuuskaistan. Vasaranisku, joka kest\u00e4\u00e4 vain millisekunnin tai kaksi, sis\u00e4lt\u00e4\u00e4 energiaa, joka jakautuu melko tasaisesti laajalle taajuusalueelle, joten se her\u00e4tt\u00e4\u00e4 kaikki kyseisen alueen moodit samanaikaisesti. Mittaamalla sek\u00e4 sy\u00f6tt\u00f6voima ett\u00e4 l\u00e4ht\u00f6vaste ja jakamalla toinen toisella taajuusalueella, testi erist\u00e4\u00e4 rakenteen oman k\u00e4ytt\u00e4ytymisen iskusta \u2014 tulos, FRF, on pelk\u00e4st\u00e4\u00e4n rakenteen ominaisuus, eik\u00e4 riipu siit\u00e4, kuinka kovaa siihen on isketty.<\/p>\n<h2>2. Laitteet<\/h2>\n<h3>Instrumentoitu iskuvasara<\/h3>\n<ul>\n<li><strong>Voimaanturi:<\/strong> vasaran p\u00e4\u00e4ss\u00e4 oleva pietsos\u00e4hk\u00f6inen anturi mittaa iskuvoiman.<\/li>\n<li><strong>Vasaran massa:<\/strong> 0,1-5 kg, joka valitaan rakenteen koon ja kiinnostavan taajuusalueen mukaan.<\/li>\n<li><strong>Vaihdettavat k\u00e4rjet:<\/strong> kova (ter\u00e4s), keskikova (muovi) ja pehme\u00e4 (kumi).<\/li>\n<li><strong>L\u00e4ht\u00f6:<\/strong> vastemittauksen kanssa synkronoitu voimasignaali.<\/li>\n<li><strong>Tyypilliset kustannukset:<\/strong> suunnilleen $500-3000.<\/li>\n<\/ul>\n<h3>Vasteanturit<\/h3>\n<ul>\n<li>Kiihtyvyysmittarit, jotka on sijoitettu kiinnostaviin kohtiin.<\/li>\n<li>Joko yksi liikkuva kiihtyvyysanturi tai useita kiinteit\u00e4 antureita.<\/li>\n<li>Taajuusalue, joka vastaa mukavasti testivaatimuksia.<\/li>\n<\/ul>\n<h3>Tiedonkeruu<\/h3>\n<ul>\n<li>V\u00e4hint\u00e4\u00e4n kaksi kanavaa \u2014 voima ja vaste.<\/li>\n<li>N\u00e4iden kanavien samanaikainen n\u00e4ytteenotto on v\u00e4ltt\u00e4m\u00e4t\u00f6nt\u00e4.<\/li>\n<li>An <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/fft\/\">FFT<\/a> analysaattorilla tai modaalianalyysiohjelmistolla.<\/li>\n<li>Laskenta <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/transfer-function\/\">siirtofunktio<\/a> ja <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/coherence\/\">koherenssi<\/a>.<\/li>\n<\/ul>\n<h2>3. Testausmenettely<\/h2>\n<h3>Yhden pisteen FRF<\/h3>\n<ol>\n<li><strong>Asenna kiihtyvyysmittari<\/strong> vastauspaikalla.<\/li>\n<li><strong>Valitse vasaran k\u00e4rki<\/strong> rakenteen ja tavoitetaajuusalueen mukaisesti.<\/li>\n<li><strong>Rakenteen ly\u00f6minen<\/strong> lujalla, nopealla iskulla her\u00e4tyskohtaan.<\/li>\n<li><strong>Tietojen tallentaminen<\/strong> \u2014 voima- ja vastesignaalit yhdess\u00e4.<\/li>\n<li><strong>Lasketaan FRF:<\/strong> H(f) = Response(f) \/ Force(f).<\/li>\n<li><strong>Keskiarvoistaminen<\/strong> toistamalla 3-10 kertaa ja keskiarvoistamalla FRF:t.<\/li>\n<li><strong>Tarkista koherenssi<\/strong> tietojen laadun tarkistamiseksi (koherenssi &gt; 0,9).<\/li>\n<\/ol>\n<h3>Monipistetestaus<\/h3>\n<ul>\n<li><strong>Liikkuva vasara:<\/strong> iskee useisiin pisteisiin pit\u00e4en kiihtyvyysmittarin kiinte\u00e4n\u00e4.<\/li>\n<li><strong>Liikkuva kiihtyvyysmittari:<\/strong> iskee yhteen kiinte\u00e4\u00e4n pisteeseen kiihtyvyysmittaria liikuttaessa.<\/li>\n<li><strong>Tulos:<\/strong> FRF:t useista paikoista paljastavat <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/mode-shape\/\">moodimuodot<\/a>.<\/li>\n<li><strong>Hilamittaus:<\/strong> j\u00e4rjestelm\u00e4llinen pisteverkko antaa t\u00e4ydellisen rakennekartoituksen.<\/li>\n<\/ul>\n<h2>4. Vasaran k\u00e4rjen valinta<\/h2>\n<h3>Vaikutus taajuussis\u00e4lt\u00f6\u00f6n<\/h3>\n<ul>\n<li><strong>Kova k\u00e4rki (ter\u00e4s):<\/strong> Lyhyt iskunkesto, korkeataajuussis\u00e4lt\u00f6, hyv\u00e4 j\u00e4ykille rakenteille ja korkeille taajuuksille (jopa 10+ kHz)<\/li>\n<li><strong>Keskokovuinen k\u00e4rki (nylon\/Delrin):<\/strong> Kohtalainen kesto, tasapainoinen spektri, yleisk\u00e4ytt\u00f6inen (2\u20135 kHz:iin asti)<\/li>\n<li><strong>Pehme\u00e4 k\u00e4rki (kumi):<\/strong> pitk\u00e4kestoinen, matalataajuinen painotus; sopii suurille, joustaville rakenteille (500-1000 Hz:iin).<\/li>\n<\/ul>\n<p>Logiikka on sama, joka ohjaa perusperiaatetta: lyhyempi, kovempi kosketus pakkaa energiaa laajemmalle, korkeammalle kaistalle, kun taas pehme\u00e4mpi, pidempi kosketus keskitt\u00e4\u00e4 sen matalille taajuuksille. K\u00e4rki valitaan siis siten, ett\u00e4 se siirt\u00e4\u00e4 energiaa sinne, miss\u00e4 kiinnostavat moodit sijaitsevat.<\/p>\n<h3>Vasaran sovittaminen rakenteeseen<\/h3>\n<ul>\n<li><strong>Kevyet rakenteet:<\/strong> pieni vasara, jossa on pehme\u00e4 k\u00e4rki, jotta v\u00e4ltet\u00e4\u00e4n vahingoittuminen ja soiminen.<\/li>\n<li><strong>Raskaat rakenteet:<\/strong> suuri vasara, jossa on kovempi k\u00e4rki, riitt\u00e4v\u00e4n her\u00e4tteen aikaansaamiseksi.<\/li>\n<li><strong>Nyrkkis\u00e4\u00e4nt\u00f6:<\/strong> rakenteen on reagoitava selv\u00e4sti mutta ei liikaa - tyypillinen huippukiihtyvyys on noin 1-10 g.<\/li>\n<\/ul>\n<h2>5. Tietojen laatu<\/h2>\n<h3>Hyv\u00e4 iskutekniikka<\/h3>\n<ul>\n<li>Nopea, puhdas isku ilman kaksoisiskuja.<\/li>\n<li>Vasara vedet\u00e4\u00e4n heti pois, jotta se ei j\u00e4\u00e4 kosketukseen.<\/li>\n<li>Ly\u00f6minen kohtisuoraan pintaan n\u00e4hden.<\/li>\n<li>Johdonmukainen iskupaikka.<\/li>\n<li>Sopiva voimataso.<\/li>\n<\/ul>\n<h3>Koherenssimittauksen validointi<\/h3>\n<ul>\n<li>The <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/coherence\/\">koherenssi<\/a> toiminto ilmaisee mittauksen laadun.<\/li>\n<li>Koherenssi l\u00e4hell\u00e4 1,0 (&gt; 0,9) tarkoittaa hyvi\u00e4 tietoja.<\/li>\n<li>Alhainen koherenssi viittaa huonoon iskuun, kohinaan tai ep\u00e4lineaarisuuteen.<\/li>\n<li>Hylk\u00e4\u00e4 huonot iskut ja toista testi.<\/li>\n<\/ul>\n<p>Kaksoisosuma on yleisin virheen aiheuttaja: se antaa kaksi impulssia rakenteeseen ja turmelee tulospektrin, mik\u00e4 on juuri sellainen virhe, jonka koherenssi on niin hyv\u00e4 paljastamaan \u2014 koherenssin notkahdus taajuudella, josta v\u00e4lit\u00e4t, on signaali hyl\u00e4t\u00e4 keskiarvo ja iske\u00e4 uudelleen.<\/p>\n<h2>6. Tulokset ja tulkinta<\/h2>\n<h3>Taajuusvastetoiminto<\/h3>\n<ul>\n<li>Amplitudikuvio osoittaa vahvistuksen taajuuden suhteen.<\/li>\n<li>Huiput merkitsev\u00e4t ominaistaajuuksia ja resonansseja.<\/li>\n<li>Huipun korkeus kuvastaa vahvistuskerrointa, joka on k\u00e4\u00e4nt\u00e4en verrannollinen vaimennukseen.<\/li>\n<li>The <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/phase\/\">vaihe<\/a> kuvaaja osoittaa 180\u00b0 siirtym\u00e4n kunkin resonanssin kautta.<\/li>\n<\/ul>\n<h3>Ominaistaajuuden tunnistaminen<\/h3>\n<ul>\n<li>Luettele kaikki FRF:n piikit.<\/li>\n<li>Ensimm\u00e4inen moodi on tyypillisesti matalimman taajuuden huippu.<\/li>\n<li>Korkeammat moodit ovat korkeammilla taajuuksilla.<\/li>\n<li>Vertaa n\u00e4it\u00e4 taajuuksia k\u00e4ytt\u00f6taajuuksiin h\u00e4iri\u00f6iden varalta.<\/li>\n<\/ul>\n<h3>V\u00e4r\u00e4htelymuodon m\u00e4\u00e4ritt\u00e4minen<\/h3>\n<ul>\n<li>Johdettu usean pisteen testauksesta.<\/li>\n<li>Suhteelliset vasteamplitudit resonanssissa m\u00e4\u00e4ritt\u00e4v\u00e4t taipumakuvion.<\/li>\n<li>Ohjelmisto voi animoida muodon.<\/li>\n<li>T\u00e4m\u00e4 yksil\u00f6i <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/nodal-point\/\">solmut<\/a> ja kunkin moodin antisolmut.<\/li>\n<\/ul>\n<h2>7. Sovellukset koneiden vianm\u00e4\u00e4rityksess\u00e4<\/h2>\n<h3>Kehysresonanssitutkimus<\/h3>\n<ul>\n<li>Kohdista isku moottoriin tai tuulettimen runkoon.<\/li>\n<li>Tunnista <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/frame-resonance\/\">rungon ominaistaajuudet<\/a>.<\/li>\n<li>Vertaa niit\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/blade-passing-frequency\/\">ter\u00e4n l\u00e4p\u00e4isy<\/a> ja moottorin s\u00e4hk\u00f6magneettiset taajuudet.<\/li>\n<li>Jos vastaavuus l\u00f6ytyy, ongelma on resonanssi.<\/li>\n<\/ul>\n<h3>Perustustestaus<\/h3>\n<ul>\n<li>Kohdista isku pohjalevyyn tai perustukseen.<\/li>\n<li>M\u00e4\u00e4rit\u00e4 sen ominaistaajuudet.<\/li>\n<li>Varmista riitt\u00e4v\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/foundation-stiffness\/\">j\u00e4ykkyys<\/a> ja taajuuserottelu.<\/li>\n<\/ul>\n<h3>Ennen\/j\u00e4lkeen-vertailuja<\/h3>\n<ul>\n<li>Testaa ennen rakennemuutosta.<\/li>\n<li>Testaa uudelleen j\u00e4lkeenp\u00e4in - j\u00e4ykist\u00e4misen, vaimennuksen lis\u00e4\u00e4misen tai massamuutosten j\u00e4lkeen.<\/li>\n<li>Tarkista, ett\u00e4 muutoksella saavutettiin haluttu vaikutus.<\/li>\n<li>Kvantifioi parannus.<\/li>\n<\/ul>\n<h2>8. Iskutestaus kent\u00e4ll\u00e4<\/h2>\n<p>Koska siihen tarvitaan vain kojeistettu vasara ja kaksikanavainen analysaattori, iskutestaus sopii luonnollisesti kentt\u00e4insin\u00f6\u00f6rin ty\u00f6kalupakkiin rutiininomaisen t\u00e4rin\u00e4ty\u00f6n rinnalle. Kun koneessa on korkea <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/running-speed\/\">ajonopeus<\/a> v\u00e4r\u00e4htelyst\u00e4, ensimm\u00e4inen kysymys on usein, onko syyn\u00e4 jokin voima, kuten esimerkiksi <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/unbalance\/\">ep\u00e4tasapaino<\/a> tai rakenteellinen resonanssi, joka vahvistaa tavallista voimaa. Kannettava analysaattori, kuten <a href=\"https:\/\/vibromera.eu\/fi\/tuote\/balanset-1\/\">Balanset-1A<\/a> k\u00e4ytet\u00e4\u00e4n mittaamiseen ja, jos syyn\u00e4 on ep\u00e4tasapaino, sen korjaamiseen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/kenttatasapaino\/\">kentt\u00e4tasapainotus<\/a>; rungon tai perustuksen iskukokeella selvitet\u00e4\u00e4n sitten, suurentaako l\u00e4heinen ominaistaajuus sitke\u00e4\u00e4 j\u00e4\u00e4nn\u00f6sv\u00e4r\u00e4htely\u00e4 - t\u00e4m\u00e4 ohjaa valintaa roottorin tasapainottamisen ja rakenteen j\u00e4ykist\u00e4misen v\u00e4lill\u00e4.<\/p>\n<p>Iskutestaus on k\u00e4yt\u00e4nn\u00f6llinen ja kustannustehokas modaalianalyysitekniikka, joka on hyvin kentt\u00e4t\u00e4rin\u00e4asiantuntijoiden ulottuvilla. Pelk\u00e4ll\u00e4 instrumentoidulla vasaralla ja t\u00e4rin\u00e4analysaattorilla voidaan tunnistaa rakenteiden resonanssit, validoida muutokset ja tuottaa dynaaminen kuvaus, jota tarvitaan resonanssiongelmien ratkaisemiseen ja rakennesuunnitelmien optimointiin koneissa ja rakennesovelluksissa.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/fi\/glossary\/\">\u2190 Takaisin p\u00e4\u00e4hakemistoon<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Opi iskukokeista, joissa k\u00e4ytet\u00e4\u00e4n instrumentoituja vasaroita rakenteiden viritt\u00e4miseen ja taajuusvastefunktioiden mittaamiseen modaalianalyysi\u00e4 ja rakenteellisen dynamiikan karakterisointia varten.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-143","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/143\/revisions"}],"predecessor-version":[{"id":101287,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/143\/revisions\/101287"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/media?parent=143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/categories?post=143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/tags?post=143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}