{"id":1479,"date":"2025-04-29T09:46:24","date_gmt":"2025-04-29T09:46:24","guid":{"rendered":"https:\/\/akustikdoktorn.se\/?page_id=1479"},"modified":"2025-04-29T14:06:34","modified_gmt":"2025-04-29T14:06:34","slug":"ralsmorjning-en-effektiv-atgard-for-kurvskrik","status":"publish","type":"page","link":"https:\/\/akustikdoktorn.se\/en\/ralsmorjning-en-effektiv-atgard-for-kurvskrik\/","title":{"rendered":"R\u00e4lsm\u00f6rjning: en effektiv \u00e5tg\u00e4rd mot kurvskrik."},"content":{"rendered":"

Noise from so-called curve squeals can be a significant problem for residents near rail curves as well as for train passengers and staff. On behalf of the Public Transport Administration, Akustikdoktorn has carried out experiments with the application of so-called friction modifiers on rails in three curves in the Neglinge depot along the Saltsj\u00f6banan line. The aim was to evaluate whether such methods are effective in reducing noise from curve squeal in the depot and thus contribute to a decision basis for a possible procurement of flange lubrication systems and\/or so-called Top of Rail (ToR) systems.<\/p>\n\n\n\n

The result of the tests was that a significant reduction in noise levels from curve screeching could be noted after friction modifiers were applied to the inner rail. The maximum noise level LAF,max for the curve passage out of the depot, was reduced by 14 dBA.AF,max<\/sub> vid kurvpassagen ut ur dep\u00e5n reducerades med 14 dBA.<\/p>\n\n\n\n

The upgrading of the Neglinge depot is described at the Transport Administration website: Neglinge dep\u00e5 anpassas f\u00f6r framtiden - Region Stockholm. Neglinge dep\u00e5 anpassas f\u00f6r framtiden – Region Stockholm<\/a><\/p>\n\n\n\n

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Test site at Neglinge depot<\/figcaption><\/figure>\n\n\n\n
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Spectrogram of curve squeal event<\/figcaption><\/figure>\n\n\n\n
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Wheel-rail forces<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Buller fr\u00e5n sk kurvskrik kan vara ett stort problem f\u00f6r boende n\u00e4ra kurvor samt f\u00f6r resen\u00e4rer och personal. Akustikdoktorn har p\u00e5 uppdrag av Trafikf\u00f6rvaltningen i Region Stockholm, gjort f\u00f6rs\u00f6k med applicering av s\u00e5 kallade friktionsmodifierare p\u00e5 r\u00e4ler i tre kurvor i Neglingedep\u00e5n l\u00e4ngs Saltsj\u00f6banan. Syftet var att utv\u00e4rdera om s\u00e5dana metoder \u00e4r effektiva f\u00f6r att …<\/p>\n

R\u00e4lsm\u00f6rjning: en effektiv \u00e5tg\u00e4rd mot kurvskrik.<\/span> Read More »<\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-1479","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/pages\/1479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/comments?post=1479"}],"version-history":[{"count":3,"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/pages\/1479\/revisions"}],"predecessor-version":[{"id":1487,"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/pages\/1479\/revisions\/1487"}],"wp:attachment":[{"href":"https:\/\/akustikdoktorn.se\/en\/wp-json\/wp\/v2\/media?parent=1479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}