{"id":9309,"date":"2023-01-31T17:06:29","date_gmt":"2023-01-31T15:06:29","guid":{"rendered":"https:\/\/monitorering.ki.dk\/?post_type=glossary&#038;p=9309"},"modified":"2023-01-31T17:06:30","modified_gmt":"2023-01-31T15:06:30","slug":"oscillation","status":"publish","type":"glossary","link":"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/","title":{"rendered":"Oscillation"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Oscillation<\/a> refers to the repetitive variation of some value about a central point or equilibrium. In the context of <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/structural-health-monitoring-shm\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">structural health monitoring<\/a>, <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> refer to the repetitive motion of a structure or a component of a structure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are different types of <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> that can occur in structures, such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Harmonic <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a>, which are periodic motions that repeat at a constant frequency and amplitude.<\/li>\n\n\n\n<li>Damped <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a>, which are harmonic <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> that decrease in amplitude over time due to energy dissipation.<\/li>\n\n\n\n<li>Forced <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a>, which are harmonic <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> that are caused by an external force, such as wind or waves.<\/li>\n\n\n\n<li>Free <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a>, which are <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> that occur without any external force and are caused by the natural stiffness and mass properties of the structure.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Oscillations<\/a> can be measured using sensors such as accelerometers, <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/displacement-transducer\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">displacement transducers<\/a>, and strain gauges, and can provide important information about the behavior of a structure under different loads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Oscillations<\/a> in the structures can be used as an indicator of a problem, for example, if the frequency and amplitude of the <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> are not within the design limits, it is usually an indication of an issue in the structure, such as damage, fatigue, or a design problem.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Oscillation<\/a> refers to the repetitive variation of some value about a central point or equilibrium. In the context of <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/structural-health-monitoring-shm\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">structural health monitoring<\/a>, <a class=\"glossaryLink\" href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">oscillations<\/a> refer to the repetitive motion of a structure or a component of &hellip; <\/p>\n<div><a href=\"https:\/\/monitorering.ki.dk\/en\/glossary\/oscillation\/\" class=\"more-link\">Read More<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-9309","glossary","type-glossary","status-publish","hentry","no-post-thumbnail"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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