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{"id":3438,"date":"2014-12-11T12:06:01","date_gmt":"2014-12-11T12:06:01","guid":{"rendered":"https:\/\/1.blog-stage.wika.cloudpowered.services\/?p=3438"},"modified":"2016-11-21T07:29:39","modified_gmt":"2016-11-21T06:29:39","slug":"vibrationsfestigkeit-drucksensor","status":"publish","type":"post","link":"https:\/\/1.blog-stage.wika.cloudpowered.services\/know-how\/vibrationsfestigkeit-drucksensor\/","title":{"rendered":"Vibrationsfestigkeit eines Drucksensors"},"content":{"rendered":"

Messger\u00e4te bzw. Drucksensoren\u00a0<\/a>sind in vielen Applikationen Vibrationen ausgesetzt und m\u00fcssen diesen widerstehen ohne in ihrer Funktion nachzulassen oder sogar auszufallen. Hersteller von Drucksensoren betreiben daher einen gro\u00dfen Aufwand, die Ger\u00e4te f\u00fcr diese Anforderung zu r\u00fcsten. Um verbindliche Zusagen machen zu k\u00f6nnen, testen die Hersteller ihre Ger\u00e4te auf Herz und Nieren.<\/p>\n

Vibrationen werden gew\u00f6hnlich in Frequenz und max. Beschleunigung angegeben. Je niedriger jedoch die Frequenz wird, desto gr\u00f6\u00dfer wird die ben\u00f6tigte Auslenkung, um noch die geforderte Beschleunigung zu erreichen. Daher wird unterhalb der sog. \u00dcbergangsfrequenz nicht mehr eine Beschleunigung, sondern eine bestimmte Auslenkung getestet und angegeben.<\/p>\n

An einer schweren, langsam rotierenden Maschine kommen haupts\u00e4chlich Frequenzen von 10 \u2026 55 Hz vor. Beim Einsatz in einer Rakete wirken auf das Ger\u00e4t dagegen Vibrationen in einem Frequenzbereich von 10 \u2026 2000 Hz. \u00dcblicherweise werden die Tests daher in eben diesem Bereich nacheinander f\u00fcr alle drei Raumachsen gefahren.<\/p>\n

Die Beschleunigungen werden als ein Vielfaches der Erdbeschleunigung [g = 9,81 m\/s\u00b2] angegeben und liegen zwischen 2 g f\u00fcr den Einsatz an den rotierenden Maschinen und bis zu 20 g bei einem Raketenstart.<\/p>\n

Vibrationsfestigkeit kann man nun wie folgt definieren: \u201eVibrationsfestigkeit gibt an, bei welcher Beschleunigung bzw. Amplitude in einem definierten Frequenzbereich noch keine Funktionsst\u00f6rungen oder Besch\u00e4digungen auftreten\u201c.<\/p>\n

Ein Drucksensor\u00a0ist also dann vibrationsfest, wenn er die Vibrationen, denen er in seinem \u201eArbeitsleben\u201c ausgesetzt ist, unbeschadet \u00fcbersteht.<\/p>\n

 <\/p>\n

Weitere Informationen\u00a0finden Sie\u00a0in dem Artikel “Vibrations- und Schockbelastung auf Druckmessumformer<\/a>“.<\/p>\n","protected":false},"excerpt":{"rendered":"

Messger\u00e4te bzw. Drucksensoren\u00a0sind in vielen Applikationen Vibrationen ausgesetzt und m\u00fcssen diesen widerstehen ohne in ihrer Funktion nachzulassen oder sogar auszufallen. Hersteller von Drucksensoren betreiben daher einen gro\u00dfen Aufwand, die Ger\u00e4te f\u00fcr diese Anforderung zu r\u00fcsten. Um verbindliche Zusagen machen zu k\u00f6nnen, testen die Hersteller ihre Ger\u00e4te auf Herz und Nieren. Vibrationen werden gew\u00f6hnlich in Frequenz […]<\/p>\n","protected":false},"author":48,"featured_media":3440,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_stc_notifier_status":"","_stc_notifier_sent_time":"","_stc_notifier_request":false,"_stc_notifier_prevent":false,"_stc_subscriber_keywords":"","_stc_subscriber_search_areas":"","footnotes":""},"categories":[393],"tags":[331,488],"class_list":["post-3438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-know-how","tag-drucksensor","tag-vibration-schock"],"acf":[],"_links":{"self":[{"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/posts\/3438"}],"collection":[{"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/users\/48"}],"replies":[{"embeddable":true,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/comments?post=3438"}],"version-history":[{"count":2,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/posts\/3438\/revisions"}],"predecessor-version":[{"id":10774,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/posts\/3438\/revisions\/10774"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/media\/3440"}],"wp:attachment":[{"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/media?parent=3438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/categories?post=3438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1.blog-stage.wika.cloudpowered.services\/wp-json\/wp\/v2\/tags?post=3438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}