{"id":9926,"date":"2026-11-05T11:36:28","date_gmt":"2026-11-05T10:36:28","guid":{"rendered":"https:\/\/bf-engineering.com\/?post_type=anwendung&#038;p=9926"},"modified":"2026-11-05T11:41:25","modified_gmt":"2026-11-05T10:41:25","slug":"wood","status":"publish","type":"anwendung","link":"https:\/\/bf-engineering.com\/en\/application\/wood\/","title":{"rendered":"Wood"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":7,"featured_media":9930,"menu_order":20,"template":"","meta":{"_acf_changed":false,"footnotes":""},"anwendung-kat":[85],"produkt-kat":[],"class_list":["post-9926","anwendung","type-anwendung","status-publish","has-post-thumbnail","hentry","anwendung-kat-material-testing","no-featured-image-padding"],"acf":{"cpt-modules":{"":null,"description":"<strong>Irradiation Testing for Wood and Wood Surfaces<\/strong>\r\n\r\nWood surfaces change under the influence of light and weathering. Several factors interact: solar radiation, moisture and temperature affect the appearance and condition of the surface. Evaluation must therefore suit the intended indoor or outdoor application.\r\n\r\nDefined laboratory experiments make it possible to compare wood species, surface treatments and coating systems under comparable conditions. Natural differences between specimens are considered alongside the selected radiation source and experimental sequence.\r\n\r\nBF Engineering has practical experience in this field: together with Schreinerei Josef Eham GmbH, the company developed a compact UV test chamber for accelerated ageing tests on wood, paints and coated surfaces.","button":null,"text":{"title":"","description":"","button":null},"gallery":"","references":"","tabs":[{"title":"Test Objectives","description":"<strong>Compare changes in wood surfaces in a traceable way<\/strong>\r\n\r\nWood testing can cover untreated surfaces as well as oiled, stained or varnished finishes. Depending on the research question, investigations examine how appearance changes or how different treatments perform under the same exposure.\r\n\r\nTesting is tailored to the intended application environment. Different light conditions may be relevant for furniture or interior fittings than for fa\u00e7ades or other exterior components. Irradiation-only tests and combined weathering tests are therefore planned as different experimental tasks.\r\n\r\nTypical areas of investigation:\r\n<ul>\r\n \t<li>Colour development of untreated wood surfaces<\/li>\r\n \t<li>Comparison of different oils, stains and varnishes<\/li>\r\n \t<li>Investigation of transparent and pigmented surface treatments<\/li>\r\n \t<li>Comparison of wood species and processing variants<\/li>\r\n \t<li>Evaluation of surfaces before and after specified exposure stages<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Wood Variants","description":"<strong>Account for natural material differences when planning specimens<\/strong>\r\n\r\nWood is a naturally grown material. Colour, structure and moisture content can vary even within a single species. These differences are considered when selecting and assigning specimens so that they interfere as little as possible with the evaluation of different treatments.\r\n\r\nDocumented initial conditions and suitable replicate specimens are useful for comparative experiments. Sanding condition, application quantity and drying of a surface treatment are also recorded. This makes it possible to establish subsequently which combination of wood and treatment was tested.\r\n\r\nImportant specimen information:\r\n<ul>\r\n \t<li>Wood species and origin or specimen assignment<\/li>\r\n \t<li>Initial colour, grain and visible material characteristics<\/li>\r\n \t<li>Wood moisture content and conditioning state<\/li>\r\n \t<li>Surface preparation and sanding condition<\/li>\r\n \t<li>Type, application and drying of the surface treatment<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Irradiation","description":"<strong>Tailor the exposure profile to indoor or outdoor applications<\/strong>\r\n\r\nThe radiation reaching a wood surface in its intended application also depends on glazing, coatings and other intervening layers. The test concept therefore defines the relevant spectral conditions and which side of the specimen is irradiated.\r\n\r\nAlongside light exposure, temperature and, where applicable, humidity or wetting phases are planned. If the interaction of several environmental influences is to be investigated, these must be specifically incorporated into the test programme. Exposure conditions are documented throughout the experiment.\r\n\r\nImportant exposure parameters:\r\n<ul>\r\n \t<li>Radiation spectrum and application-specific filtering<\/li>\r\n \t<li>Irradiance and spatial distribution<\/li>\r\n \t<li>Exposure duration and radiant exposure<\/li>\r\n \t<li>Surface and ambient temperatures<\/li>\r\n \t<li>Humidity, wetting and drying phases, where applicable<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Evaluation","description":"<strong>Record colour development and surface condition together<\/strong>\r\n\r\nEvaluation begins with a documented initial examination. Repeated photographs and suitable measurements can show how the surface develops over several exposure stages. Measurement locations are identified as clearly as possible, since the natural wood structure can produce local differences.\r\n\r\nDepending on the test objective, the condition of a coating or other surface characteristics is investigated alongside colour. A colour change alone is not sufficient evidence of a change in load-bearing capacity or the overall service life of the component.\r\n\r\nPossible evaluation parameters:\r\n<ul>\r\n \t<li>Colour change at specified measurement positions<\/li>\r\n \t<li>Gloss and appearance of treated surfaces<\/li>\r\n \t<li>Cracking and changes in surface structure<\/li>\r\n \t<li>Condition and adhesion behaviour of existing coatings<\/li>\r\n \t<li>Comparison of different treatments after identical exposure<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Integration","description":"<strong>Adapt the system to specimen formats and workflows<\/strong>\r\n\r\nWood specimens can have different dimensions, thicknesses and surface constructions. The irradiation system is therefore tailored to the intended formats and the required comparison area. Specimens must be positioned in a defined way and remain accessible for intermediate evaluations.\r\n\r\nBF Engineering plans irradiation equipment to suit the test objective and existing environment. The design considers operation, temperature monitoring and maintenance, as well as interfaces with supplementary climatic functions where applicable.\r\n\r\nRelevant integration considerations:\r\n<ul>\r\n \t<li>Specimen dimensions, material thicknesses and number of variants<\/li>\r\n \t<li>Defined mounting and repeatable positioning<\/li>\r\n \t<li>Access for photographic documentation and intermediate measurements<\/li>\r\n \t<li>Monitoring of irradiation and temperature<\/li>\r\n \t<li>Cleaning, maintenance and regular verification measurements<\/li>\r\n<\/ul>","button":null,"image":"","tables":null}]},"contact-person_selection":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wood | BF Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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