{"id":159025,"date":"2021-07-21T09:10:58","date_gmt":"2021-07-21T07:10:58","guid":{"rendered":"https:\/\/bandelin.com\/?post_type=docs&#038;p=159025"},"modified":"2025-09-30T00:50:17","modified_gmt":"2025-09-29T22:50:17","password":"","slug":"ecografia-una-breve-introduzione","status":"publish","type":"docs","link":"https:\/\/bandelin.com\/it\/docs\/wissen\/ultraschall-eine-kurze-einfuehrung\/","title":{"rendered":"Gli ultrasuoni - una breve introduzione"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p>Gli ultrasuoni sono utilizzati nella scienza e nella tecnologia per un'ampia variet\u00e0 di applicazioni. I principi fisici degli ultrasuoni sono descritti brevemente di seguito.&nbsp;<\/p>\n\n\n\n<p>Quando gli ultrasuoni con una frequenza di 20 kHz e un'intensit\u00e0 sonora di 0,1 W\/cm\u00b2 vengono applicati ai mezzi liquidi, si creano minuscole bolle di cavitazione a causa della forte sollecitazione alternata. Queste minuscole cavit\u00e0 con bassa pressione interna si creano a causa dell'inerzia del mezzo e delle vibrazioni meccaniche indotte. A causa della pressione esterna del mezzo, le bolle instabili implodono dopo un breve periodo di crescita sotto picchi di pressione e temperatura elevati. Ci\u00f2 si traduce in elevate forze di taglio nello strato limite. Questo effetto si verifica in particolare sulle bolle d'aria o sulle particelle di sporco, i cosiddetti nuclei di cavitazione. La cavitazione nell'acqua provoca il rumore acusticamente percepibile dei dispositivi a ultrasuoni ad alte prestazioni.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper fourthree\" title=\"Pulizia con un bagno ad ultrasuoni SONOREX di BANDELIN\" style=\"width:420px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_h0d6_Ur5poE\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/bandelin.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2Fh0d6_Ur5poE%2Fhqdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/h0d6_Ur5poE\" \/><meta itemprop=\"duration\" content=\"PT2M7S\" \/><meta itemprop=\"uploadDate\" content=\"2015-02-04T16:33:08Z\" \/><\/div><div id=\"lyte_h0d6_Ur5poE\" data-src=\"https:\/\/bandelin.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2Fh0d6_Ur5poE%2Fhqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">Pulizia con un bagno ad ultrasuoni SONOREX di BANDELIN<\/div><\/div><button tabindex=\"0\" class=\"play\"><\/button><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/h0d6_Ur5poE\" rel=\"nofollow\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/bandelin.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2Fh0d6_Ur5poE%2F0.jpg\" alt=\"Pulizia con un bagno ad ultrasuoni SONOREX di BANDELIN\" width=\"420\" height=\"295\" \/><br \/>Guarda questo video su YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"Weitere Informationen zu den passenden Ultraschallb\u00e4dern und Pr\u00e4paraten finden Sie unter www.bandelin.com\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:420px;margin:5px;\"><br\/><span class=\"lyte_disclaimer\">Riproducendo i video, lei accetta l'informativa sulla privacy di YouTube.<\/span><\/div><figcaption><\/figcaption><\/figure><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Ultraschall wird in Wissenschaft und Technik f\u00fcr die vielf\u00e4ltigsten Anwendungen eingesetzt. Im Folgenden werden kurz die physikalischen Grundlagen des Ultraschalls beschrieben.&nbsp; Bei der Einwirkung von Ultraschall ab einer Frequenz von 20 kHz und einer Schallintensit\u00e4t von 0,1 W\/cm\u00b2 auf fl\u00fcssige Medien entstehen aufgrund der starken Wechselbeanspruchung kleinste Kavitationsblasen. Diese feinsten Hohlr\u00e4ume mit geringem Innendruck entstehen [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"doc_category":[1926],"doc_tag":[],"class_list":["post-159025","docs","type-docs","status-publish","hentry","doc_category-wissen"],"acf":[],"year_month":"2026-10","word_count":139,"total_views":"60","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"J Bandelin","author_nicename":"jobandelin","author_url":"https:\/\/bandelin.com\/it\/author\/jobandelin\/"},"doc_category_info":[{"term_name":"Grundlagenwissen Kavitation","term_url":"https:\/\/bandelin.com\/it\/docs-category\/wissen\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ultraschall \u2013 kurze Einf\u00fchrung &amp; Grundlagen | BANDELIN<\/title>\n<meta name=\"description\" content=\"Informationen Sie sich \u00fcber Ultraschall - eine kurze Einf\u00fchrung | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bandelin.com\/it\/documenti\/conoscere\/ecografia-una-breve-introduzione\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ultraschall \u2013 kurze Einf\u00fchrung &amp; Grundlagen | BANDELIN\" \/>\n<meta property=\"og:description\" content=\"Informationen Sie sich \u00fcber Ultraschall - eine kurze Einf\u00fchrung | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bandelin.com\/it\/documenti\/conoscere\/ecografia-una-breve-introduzione\/\" \/>\n<meta property=\"og:site_name\" content=\"BANDELIN electronic GmbH &amp; Co. 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