{"id":3170,"date":"2026-06-24T16:13:03","date_gmt":"2026-06-24T14:13:03","guid":{"rendered":"https:\/\/www.technical-center.de\/wiki\/surface-measurement\/"},"modified":"2026-06-24T16:13:03","modified_gmt":"2026-06-24T14:13:03","slug":"surface-measurement","status":"publish","type":"encyclopedia","link":"https:\/\/www.technical-center.de\/en\/glossary\/surface-measurement\/","title":{"rendered":"Surface measurement"},"content":{"rendered":"<div class=\"glossar-eintrag\">\n<p><strong>Definition:<\/strong> Surface measurement is the quantitative recording of roughness, waviness and three-dimensional topography of a technical surface. It serves to evaluate functional properties such as friction, tightness or coating adhesion. Normative bases include DIN EN ISO 4287 and ISO 25178.<\/p>\n<p><strong>Practical relevance:<\/strong> Characteristic values such as Ra, Rz or Sa describe height deviations in the micro and macro range. Measurement methods are tactile stylus instruments or optical 3D profilometers. Filter settings (e.g. in accordance with ISO 16610) influence the evaluation. Surface quality is decisive for tribological systems, sealing surfaces and joined connections.<\/p>\n<p><strong>Decision-making perspectives:<\/strong><\/p>\n<ul>\n<li><strong>Technical decision-makers:<\/strong> Ensuring functionally appropriate surfaces for wear and tightness requirements.<\/li>\n<li><strong>Purchasing\/project management:<\/strong> Definition of unambiguous roughness characteristic values in drawings and specifications.<\/li>\n<li><strong>Science:<\/strong> Analysis of topography structures and their influence on friction and wetting.<\/li>\n<li><strong>Insurance\/law:<\/strong> Verification of surface deviations in functional or liability matters.<\/li>\n<\/ul>\n<p><strong>Typical testing or verification methods:<\/strong> Stylus profiling method, optical white-light interferometry, 3D laser scanning, profile analysis.<\/p>\n<p><strong>FAQ:<\/strong><\/p>\n<ul>\n<li>What is the difference between roughness and waviness?<\/li>\n<li>Roughness describes fine microstructures, waviness larger periodic deviations of the surface.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"author":0,"featured_media":0,"template":"","encyclopedia-tag":[],"class_list":["post-3170","encyclopedia","type-encyclopedia","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia\/3170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"wp:attachment":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/media?parent=3170"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=3170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}