{"id":100372,"date":"2024-07-26T11:44:36","date_gmt":"2024-07-26T09:44:36","guid":{"rendered":"https:\/\/www.linseis.com\/metodi-di-analisi-termica\/ponte-caldo-transitorio-thb\/"},"modified":"2026-01-13T08:52:24","modified_gmt":"2026-01-13T07:52:24","slug":"ponte-caldo-transitorio-thb","status":"publish","type":"page","link":"https:\/\/www.linseis.com\/it\/metodi-di-analisi-termica\/ponte-caldo-transitorio-thb\/","title":{"rendered":"Ponte caldo transitorio (THB)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"100372\" class=\"elementor elementor-100372 elementor-22636\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3549cf e-flex e-con-boxed e-con e-parent\" data-id=\"a3549cf\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac41c94 elementor-widget elementor-widget-image\" data-id=\"ac41c94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/\/linseis_scale-top-1.svg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7b7feb e-con-full e-flex e-con e-child\" data-id=\"a7b7feb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6100945 e-con-full e-flex e-con e-child\" data-id=\"6100945\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cc1182c elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"cc1182c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:250}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\"><b>\n\nPonte caldo transitorio (THB)\n\n<\/b><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d91a43 e-con-full e-flex e-con e-child\" data-id=\"6d91a43\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9413374 elementor-widget elementor-widget-n-carousel\" data-id=\"9413374\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;carousel_items&quot;:[{&quot;slide_title&quot;:&quot;Produkt 1&quot;,&quot;_id&quot;:&quot;d6fbcdb&quot;}],&quot;slides_to_show&quot;:&quot;1&quot;,&quot;slides_to_scroll&quot;:&quot;2&quot;,&quot;autoplay_speed&quot;:2000,&quot;slides_to_show_tablet&quot;:&quot;1&quot;,&quot;slides_to_show_mobile&quot;:&quot;1&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;offset_sides&quot;:&quot;none&quot;,&quot;image_spacing_custom&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;image_spacing_custom_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-carousel.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-carousel swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Karussell\" dir=\"ltr\">\n\t\t\t<div class=\"swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"1\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 di 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44441f5 e-flex e-con-boxed e-con e-child\" data-id=\"44441f5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4103051 elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-image\" data-id=\"4103051\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1024x1024.png\" class=\"attachment-large size-large wp-image-36271\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1024x1024.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-300x300.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-150x150.png 150w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-768x768.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1536x1536.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-2048x2048.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4a6800 elementor-widget elementor-widget-image\" data-id=\"b4a6800\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/\/linseis_scale-bottom-1.svg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7c8d6cc e-flex e-con-boxed e-con e-parent\" data-id=\"7c8d6cc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d7b7522 e-flex e-con-boxed e-con e-parent\" data-id=\"d7b7522\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-449b6fd e-con-full e-flex e-con e-child\" data-id=\"449b6fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-031217d elementor-invisible elementor-widget elementor-widget-wp-widget-bcn_widget\" data-id=\"031217d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"wp-widget-bcn_widget.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"breadcrumbs\" vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\"><span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Vai a Linseis.\" href=\"https:\/\/www.linseis.com\/it\/\" class=\"home\" aria-current=\"page\"><span property=\"name\">Linseis<\/span><\/a><meta property=\"position\" content=\"1\"><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ed98f58 e-flex e-con-boxed e-con e-parent\" data-id=\"ed98f58\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-bbc47b3 e-con-full e-flex e-con e-child\" data-id=\"bbc47b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8741304 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"8741304\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Che cos&#8217;\u00e8 il metodo del ponte caldo transitorio?<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae33f3a elementor-widget elementor-widget-text-editor\" data-id=\"ae33f3a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\"><div class=\"row\"><div class=\"spb_content_element col-sm-12 spb_text_column\"><div class=\"spb_wrapper clearfix\"><div class=\"spb_content_element col-sm-6 spb_text_column\"><div class=\"spb_wrapper clearfix\"><p>Il metodo del ponte caldo <a href=\"https:\/\/www.linseis.com\/messgeraete\/waermeleitfaehigkeit\/thb-l56\/\" data-auto-event-observed=\"true\"><br \/><strong>Ponte caldo transitorio (THB)<\/strong><br \/><\/a> per la <strong>misurazione delle propriet\u00e0 di trasporto termico<\/strong> dei materiali \u00e8 un <strong>ulteriore sviluppo del metodo del filo caldo (THW).<\/strong><\/p><p>Entrambi i metodi appartengono alla\u00a0<strong><a href=\"https:\/\/www.linseis.com\/it\/?p=100104\" data-auto-event-observed=\"true\">classe dei metodi di misurazione transitori, cio\u00e8 dipendenti dal tempo<\/a>\u00a0<\/strong>che, a differenza dei metodi stazionari, offrono tempi di misurazione molto pi\u00f9 brevi e, in aggiunta alla <a href=\"https:\/\/www.linseis.com\/it\/?page_id=100323\" data-auto-event-observed=\"true\"><strong>conduttiv\u00e0 termica<\/strong> <\/a>misurano contemporaneamente anche la <a href=\"https:\/\/www.linseis.com\/it\/?page_id=100319\" data-auto-event-observed=\"true\"><strong>diffusivit\u00e0 termica<\/strong><\/a>.<\/p><p>Il componente principale del THB \u00e8 un conduttore elettrico a forma di striscia che funge sia da fonte di calore Joule che da termometro a resistenza. Incastrata tra due met\u00e0 del campione, la striscia emette una corrente di riscaldamento costante durante la misurazione, riscaldando cos\u00ec anche se stessa. L&#8217;aumento di temperatura nel tempo \u00e8 la misura delle propriet\u00e0 di trasporto termico menzionate.<\/p><p>Mentre il <strong>metodo THW<\/strong> utilizza <strong>un solo filo riscaldante<\/strong>, <strong>il metodo THB utilizza quattro strisce riscaldanti<\/strong> (vedi Fig. 1), collegate a formare un ponte di Wheatstone. Ci\u00f2 significa che non \u00e8 necessario regolare lo zero prima della misurazione.<\/p><p>Per compensare l&#8217;effetto bordo, le strisce riscaldanti a meandri sono divise in due segmenti di lunghezza diversa (Fig. 2). In questo modo si creano due resistenze singole separate galvanicamente che per\u00f2 sono collegate termicamente. Se la caduta di tensione del segmento corto viene sottratta da quella del segmento lungo, si ottiene un segnale di misurazione lungo la lunghezza effettiva della striscia riscaldante in cui le perdite di calore ai bordi vengono compensate.<\/p><\/div><\/div><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe4080d elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"fe4080d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\"><div class=\"row\"><div class=\"spb_content_element col-sm-12 spb_text_column\"><div class=\"spb_wrapper clearfix\"><p><img decoding=\"async\" class=\"wp-image-22645 size-full aligncenter\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/thb-tandem-strip.png\" alt=\"\" width=\"640\" height=\"170\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/thb-tandem-strip.png 640w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/thb-tandem-strip-300x80.png 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/p><p style=\"text-align: center;\"><em>Strisce tandem THB<\/em><\/p><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c866b71 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"c866b71\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><img decoding=\"async\" class=\"wp-image-22638 size-full aligncenter\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/THB-sensor.png\" alt=\"\" width=\"744\" height=\"716\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/THB-sensor.png 744w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/THB-sensor-300x289.png 300w\" sizes=\"(max-width: 744px) 100vw, 744px\" \/><\/p><p style=\"text-align: center;\"><em>Sensore THB<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d88aff4 e-flex e-con-boxed elementor-invisible e-con e-parent\" data-id=\"d88aff4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1b0856d e-con-full e-flex e-con e-child\" data-id=\"1b0856d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-db60d63 e-con-full e-flex e-con e-child\" data-id=\"db60d63\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6515a14 elementor-widget elementor-widget-text-editor\" data-id=\"6515a14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Quali propriet\u00e0 termofisiche vengono misurate?<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7972158 elementor-widget elementor-widget-text-editor\" data-id=\"7972158\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Con il metodo del Ponte Caldo Transitorio, la&nbsp;<strong><a href=\"https:\/\/www.linseis.com\/it\/?page_id=100323\" data-auto-event-observed=\"true\">conduttivit\u00e0 termica<\/a><\/strong>, <strong><a href=\"https:\/\/www.linseis.com\/it\/?page_id=100319\" data-auto-event-observed=\"true\">diffusivit\u00e0 termica<\/a> <\/strong>e, se la densit\u00e0 \u00e8 nota, anche la <strong><a href=\"https:\/\/www.linseis.com\/it\/?page_id=100317\" data-auto-event-observed=\"true\">capacit\u00e0 termica specifica<\/a> <\/strong>di solidi, fluidi, solidi sfusi e materiali pastosi.<\/p>\n<p><strong>Quali sono gli standard per i metodi di misurazione dei fili riscaldanti e delle strisce riscaldanti?<\/strong><\/p>\n<ul>\n<li><strong>ASTM D 5930-01<br><\/strong>Metodo di prova standard per la conducibilit\u00e0 termica delle materie plastiche mediante una tecnica di sorgente di linea transitoria<\/li>\n<li><strong>ASTM D7896-19<br><\/strong>Metodo di prova standard per la conducibilit\u00e0 termica, la diffusivit\u00e0 termica e la capacit\u00e0 termica volumetrica dei liquidi di raffreddamento dei motori e dei fluidi correlati con il metodo della conducibilit\u00e0 termica dei liquidi a filo caldo transitorio<\/li>\n<li><strong>ISO 22007-2<br><\/strong>Plastica-Determinazione della conducibilit\u00e0 termica e della diffusivit\u00e0 termica<\/li>\n<li style=\"list-style-type: none;\">&nbsp;<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Ponte caldo transitorio (THB) Che cos&#8217;\u00e8 il metodo del ponte caldo transitorio? Il metodo del ponte caldo Ponte caldo transitorio (THB) per la misurazione delle propriet\u00e0 di trasporto termico dei materiali \u00e8 un ulteriore sviluppo del metodo del filo caldo (THW). Entrambi i metodi appartengono alla\u00a0classe dei metodi di misurazione transitori, cio\u00e8 dipendenti dal tempo\u00a0che, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":100333,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-100372","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/pages\/100372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/comments?post=100372"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/pages\/100372\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/pages\/100333"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/it\/wp-json\/wp\/v2\/media?parent=100372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}