{"id":18225,"date":"2018-05-29T10:37:40","date_gmt":"2018-05-29T09:37:40","guid":{"rendered":"https:\/\/www.cetestgroup.com\/?page_id=18225"},"modified":"2023-03-22T13:41:31","modified_gmt":"2023-03-22T13:41:31","slug":"vibrations","status":"publish","type":"page","link":"https:\/\/www.cetestgroup.com\/fr\/essais-ferroviaires\/bruit-et-vibrations\/vibrations\/","title":{"rendered":"Vibrations"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column]<div class=\"ult-spacer spacer-69df7e82a678d\" data-id=\"69df7e82a678d\" data-height=\"30\" data-height-mobile=\"20\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div><div class=\"dfd-heading-shortcode\"><div class=\"dfd-heading-module-wrap  text-center style_01 dfd-heading-69df7e82a6913 dfd-disable-resposive-headings\" id=\"dfd-heading-69df7e82a6913\" ><div class=\"inline-block\"><div class=\"dfd-heading-module\"><h6 class=\"widget-title dfd-title \" style=\"font-family:PT Sans Narrow; font-weight:400; font-style:normal; font-size: 20px; color: #25bdd5 !important; line-height: 25px; \">CETEST mesure et analyse les niveaux de vibration sur des composants et sous-ensembles en vue d\u2019\u00e9tudier leur conformit\u00e9 aux normes et aux limites.<\/h6><div class=\"dfd-heading-delimiter\"><\/div><\/div><\/div><\/div><script type=\"text\/javascript\">\r\n\t\t\t\t\t\t\t\t\t(function($) {\r\n\t\t\t\t\t\t\t\t\t\t$(\"head\").append(\"<style>.dfd-heading-69df7e82a6913.dfd-heading-module-wrap .dfd-heading-module .dfd-heading-delimiter {border-bottom-style:solid;border-bottom-width:1px;width:100px;border-bottom-color:#dddddd;}.dfd-heading-69df7e82a6913.dfd-heading-module-wrap .dfd-heading-module .dfd-heading-delimiter {margin-top:20px;margin-bottom:20px;}<\/style>\");\r\n\t\t\t\t\t\t\t\t\t})(jQuery);\r\n\t\t\t\t\t\t\t\t<\/script><\/div><div class=\"ult-spacer spacer-69df7e82a6b02\" data-id=\"69df7e82a6b02\" data-height=\"30\" data-height-mobile=\"20\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div>[vc_row_inner][vc_column_inner][vc_column_text]Par exemple, nous calculons la FRF (fonction de r\u00e9ponse en fr\u00e9quence) pour d\u00e9terminer la transmission de vibration entre diff\u00e9rents composants et phases de suspension. Ces donn\u00e9es signifient que nous d\u00e9tectons les principaux probl\u00e8mes et ajustons les mod\u00e8les de simulation.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner]<div class=\"ult-spacer spacer-69df7e82a6b51\" data-id=\"69df7e82a6b51\" data-height=\"30\" data-height-mobile=\"20\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div>[vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;]<div class=\"ult-spacer spacer-69df7e82a6b95\" data-id=\"69df7e82a6b95\" data-height=\"20\" data-height-mobile=\"10\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div><div id=\"dfd-carousel-69df7e82a6ca8\" class=\"dfd-carousel-wrapper\"><div class=\"dfd-carousel-module-wrapper  dfd-carousel-horizontal dfd-arrows_aside2 dfdfillsquare dfd-arrows-style_4 dfd-arrows-enabled dfd-dots-enabled\" ><div class=\"dfd-carousel\">[vc_single_image image=\u00a0\u00bb15957&Prime; img_size=\u00a0\u00bbfull\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb][vc_single_image image=\u00a0\u00bb15959&Prime; img_size=\u00a0\u00bbfull\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb][vc_single_image image=\u00a0\u00bb19396&Prime; img_size=\u00a0\u00bbfull\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb]<\/div><a href=\"#\" class=\"dfd-slider-control prev\" title=\"Previous slide\"><i class=\"dfd-added-font-icon-left-open2\"><\/i><\/a><a href=\"#\" class=\"dfd-slider-control next\" title=\"Next slide\"><i class=\"dfd-added-font-icon-right-open2\"><\/i><\/a><\/div>\t\t\t\t<script type=\"text\/javascript\">\r\n\t\t\t\t\t(function($) {\r\n\t\t\t\t\t\t\"use strict\";\r\n\t\t\t\t\t\tvar $carousel = $('#dfd-carousel-69df7e82a6ca8').find('.dfd-carousel');\r\n\t\t\t\t\t\t$(document).ready(function() {\r\n\t\t\t\t\t\t\tvar $initialized = ($('body').hasClass('page-template-tmp-side-by-side')) ? $carousel.not('.slick-initialized') : $carousel;\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t$carousel.siblings('.dfd-slider-control.prev').click(function(e) {\r\n\t\t\t\t\t\t\t\te.preventDefault();\r\n\t\t\t\t\t\t\t\t$carousel.eq(0).slick('slickPrev');\r\n\t\t\t\t\t\t\t});\r\n\t\t\t\t\t\t\t$carousel.siblings('.dfd-slider-control.next').click(function(e) {\r\n\t\t\t\t\t\t\t\te.preventDefault();\r\n\t\t\t\t\t\t\t\t$carousel.eq(0).slick('slickNext');\r\n\t\t\t\t\t\t\t});\r\n\t\t\t\t\t\t\t$initialized.slick({arrows: false,dotsClass: 'dfd-slick-dots',slidesToScroll: 1,autoplay: true,autoplaySpeed: 5000,dots: true,customPaging: function(slider, i) {\r\n\t\t\t\t\t\t\t\t\treturn '<span data-role=\"none\" role=\"button\" aria-required=\"false\" tabindex=\"0\"><\/span>';\r\n\t\t\t\t\t\t\t\t},infinite: true,slidesToShow: 1,speed: 300,swipe: true,draggable: true,responsive: [\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tbreakpoint: 1024,\r\n\t\t\t\t\t\t\t\tsettings: {\r\n\t\t\t\t\t\t\t\t\tslidesToShow: 1,\r\n\t\t\t\t\t\t\t\t\tslidesToScroll: 1,\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t},\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tbreakpoint: 800,\r\n\t\t\t\t\t\t\t\tsettings: {\r\n\t\t\t\t\t\t\t\t\tslidesToShow: 1,\r\n\t\t\t\t\t\t\t\t\tslidesToScroll: 1,\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t},\r\n\t\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\t\tbreakpoint: 480,\r\n\t\t\t\t\t\t\t\tsettings: {\r\n\t\t\t\t\t\t\t\t\tslidesToShow: 1,\r\n\t\t\t\t\t\t\t\t\tslidesToScroll: 1,\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t},]});\r\n\t\t\t\t\t\t\t$(\"head\").append(\"<style>#dfd-carousel-69df7e82a6ca8 > .dfd-carousel-module-wrapper > .dfd-carousel > .slick-list > .slick-track > .dfd-item-wrap > .cover {padding: 10px;}#dfd-carousel-69df7e82a6ca8 {margin: -10px;}<\/style>\")\t\t\t\t\t\t});\r\n\t\t\t\t\t})(jQuery);\r\n\t\t\t\t<\/script>\r\n            <\/div>[\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime; css=\u00a0\u00bb.vc_custom_1501153082267{padding-right: 5% !important;padding-left: 5% !important;}\u00a0\u00bb]<div id=\"dfd-announce-69df7e82a6d8d-9348\" class=\"dfd-announce-module-wrap align-left no_full_bg_class  style-3 layout-1\" ><div class=\"dfd-announce-module\"><div class=\"module-icon\" ><i class = \"dfd-icon-train_1\"><\/i><\/div><div class=\"module-text\" style=\"font-family:PT Sans; font-weight:400; font-style:normal; font-size: 18px; color: #25bdd5 !important; line-height: 22px; font-weight:bold; \">Nous pouvons analyser et comparer la DSP (densit\u00e9 spectrale d\u2019\u00e9nergie) aux courbes de r\u00e9f\u00e9rence.<\/div><\/div><\/div><div class=\"ult-spacer spacer-69df7e82a6e02\" data-id=\"69df7e82a6e02\" data-height=\"20\" data-height-mobile=\"20\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div>[vc_column_text]CETEST effectue \u00e9galement l&rsquo;analyse d&rsquo;ordres. Cette analyse compare les niveaux de vibration dans le domaine de fr\u00e9quence \u00e0 la vitesse de rotation. C\u2019est un outil tr\u00e8s utile dans la d\u00e9tection de d\u00e9faillances sur des \u00e9l\u00e9ments rotatifs.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner]<div class=\"ult-spacer spacer-69df7e82a6e3d\" data-id=\"69df7e82a6e3d\" data-height=\"30\" data-height-mobile=\"20\" data-height-tab=\"20\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div>[vc_column_text]De plus, nous pouvons analyser et comparer la DSP (densit\u00e9 spectrale d\u2019\u00e9nergie) aux courbes de r\u00e9f\u00e9rence. La DSP correspondante est ensuite calcul\u00e9e \u00e0 partir des acc\u00e9l\u00e9rations mesur\u00e9es en ligne, en conditions de service. Cette DSP est compar\u00e9e \u00e0 la courbe de r\u00e9f\u00e9rence \u00e9tablie par l\u2019essai fonctionnel dans la norme IEC 61373 pour d\u00e9terminer si le composant \u00e0 l\u2019\u00e9tude subit un niveau de vibration normal.[\/vc_column_text]<div class=\"ult-spacer spacer-69df7e82a6e93\" data-id=\"69df7e82a6e93\" data-height=\"60\" data-height-mobile=\"20\" data-height-tab=\"30\" data-height-tab-portrait=\"\" data-height-mobile-landscape=\"\" style=\"clear:both;display:block;\"><\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_column_text]Par exemple, nous calculons la FRF (fonction de r\u00e9ponse en fr\u00e9quence) pour d\u00e9terminer la transmission de vibration entre diff\u00e9rents composants et phases de suspension. Ces donn\u00e9es signifient que nous d\u00e9tectons<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":18300,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"tmp-page-right-sidebar.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-18225","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Niveaux de vibration sur des composants et sous-ensembles | CETEST<\/title>\n<meta name=\"description\" content=\"CETEST mesure et analyse les niveaux de vibration sur des composants et sous-ensembles en vue d\u2019\u00e9tudier leur conformit\u00e9 aux normes et aux limites. 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