{"id":931,"date":"2020-06-11T10:15:50","date_gmt":"2020-06-11T07:15:50","guid":{"rendered":"https:\/\/sites.uef.fi\/inverse\/?page_id=931"},"modified":"2023-08-22T15:31:03","modified_gmt":"2023-08-22T12:31:03","slug":"thermal-tomography","status":"publish","type":"page","link":"https:\/\/sites.uef.fi\/inverse\/research-areas\/thermal-tomography\/","title":{"rendered":"Thermal tomography"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Thermal Tomography<\/h1>\n\n\n\n<p>Thermal tomography is a novel diffuse imaging technology which produces 3D images of the thermal conductivity, heat capacity and surface heat flux coefficient parameters based on transient temperature measurements at the target surface in response to short period heatings of the target surface. Thermal tomography can be used for characterization of thermal properties of complex structures and for non-destructive testing of targets that withstand moderate temperature changes. The testing can potentially reveal cracks, voids, delamination faults, air bubbles and other manufacturing defects. Our objective is to develop prototype measurement system and computational methods of thermal tomography, and carry out practical feasibility studies of the new imaging technology.<\/p>\n\n\n\n<figure class=\"wp-block-image alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTdevice-284x300.png\" alt=\"Prototype measurement system.\" class=\"wp-image-1093\" srcset=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTdevice-284x300.png 284w, https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTdevice.png 543w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"300\" src=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTtarget-230x300.png\" alt=\"Measurement of a mortar disk with a cylindrical (air) defect. The top and bottom surfaces of the target are insulated with styrofoam, leading to (approximately) zero flux at the top and bottom surfaces\" class=\"wp-image-1090\" srcset=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTtarget-230x300.png 230w, https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTtarget.png 235w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/><\/figure>\n\n\n\n<p>Figure: Left: Prototype measurement system. Right: Measurement of a mortar disk with a cylindrical (air) defect. The top and bottom surfaces of the target are insulated with styrofoam, leading to (approximately) zero flux at the top and bottom surfaces<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"885\" height=\"389\" src=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTresult.png\" alt=\" Left: Surface heat flux coefficient (gray patches denote the locations of the heating elements). Right: Estimates of the heat conductivity and heat capacity.\" class=\"wp-image-1096\" srcset=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTresult.png 885w, https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTresult-300x132.png 300w, https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTresult-768x338.png 768w\" sizes=\"auto, (max-width: 885px) 100vw, 885px\" \/><\/figure>\n\n\n\n<p>Figure: Results. Left: Surface heat flux coefficient (gray patches denote the locations of the heating elements). Right: Estimates of the heat conductivity and heat capacity.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Contact<\/h1>\n\n\n\n<p><a href=\"https:\/\/uefconnect.uef.fi\/en\/person\/ville.kolehmainen\/\">Ville Kolehmainen<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Past and present collaborators<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Professor Helcio Orlande, University Federal de Rio de Janeiro, Department of Mechanical Engineering.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Thermal Tomography Thermal tomography is a novel diffuse imaging technology which produces 3D images of the thermal conductivity, heat capacity and surface heat flux coefficient parameters based on transient temperature measurements at the target surface in response to short period heatings of the target surface. Thermal tomography can be used for characterization of thermal properties [&hellip;]<\/p>\n","protected":false},"author":90,"featured_media":0,"parent":56,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-931","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Thermal tomography - Inverse Problems Research Group<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites.uef.fi\/inverse\/research-areas\/thermal-tomography\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thermal tomography - Inverse Problems Research Group\" \/>\n<meta property=\"og:description\" content=\"Thermal Tomography Thermal tomography is a novel diffuse imaging technology which produces 3D images of the thermal conductivity, heat capacity and surface heat flux coefficient parameters based on transient temperature measurements at the target surface in response to short period heatings of the target surface. Thermal tomography can be used for characterization of thermal properties [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.uef.fi\/inverse\/research-areas\/thermal-tomography\/\" \/>\n<meta property=\"og:site_name\" content=\"Inverse Problems Research Group\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-22T12:31:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.uef.fi\/inverse\/wp-content\/uploads\/sites\/43\/2020\/06\/ThermalTomography_TTdevice-284x300.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/\",\"url\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/\",\"name\":\"Thermal tomography - Inverse Problems Research Group\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/wp-content\\\/uploads\\\/sites\\\/43\\\/2020\\\/06\\\/ThermalTomography_TTdevice-284x300.png\",\"datePublished\":\"2020-06-11T07:15:50+00:00\",\"dateModified\":\"2023-08-22T12:31:03+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/#primaryimage\",\"url\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/wp-content\\\/uploads\\\/sites\\\/43\\\/2020\\\/06\\\/ThermalTomography_TTdevice.png\",\"contentUrl\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/wp-content\\\/uploads\\\/sites\\\/43\\\/2020\\\/06\\\/ThermalTomography_TTdevice.png\",\"width\":543,\"height\":573,\"caption\":\"Prototype measurement system.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/thermal-tomography\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Research areas\",\"item\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/research-areas\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Thermal tomography\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/#website\",\"url\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/\",\"name\":\"Inverse Problems Research Group\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sites.uef.fi\\\/inverse\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Thermal tomography - Inverse Problems Research Group","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sites.uef.fi\/inverse\/research-areas\/thermal-tomography\/","og_locale":"en_US","og_type":"article","og_title":"Thermal tomography - Inverse Problems Research Group","og_description":"Thermal Tomography Thermal tomography is a novel diffuse imaging technology which produces 3D images of the thermal conductivity, heat capacity and surface heat flux coefficient parameters based on transient temperature measurements at the target surface in response to short period heatings of the target surface. 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