{"id":43,"date":"2017-07-26T15:13:03","date_gmt":"2017-07-26T15:13:03","guid":{"rendered":"http:\/\/pafec.kevinit.co.uk\/?page_id=43"},"modified":"2017-08-21T12:57:33","modified_gmt":"2017-08-21T12:57:33","slug":"medical-ultrasonics","status":"publish","type":"page","link":"https:\/\/pafec.kevinit.co.uk\/index.php\/pafec-vibroacoustics-application-areas\/medical-ultrasonics\/","title":{"rendered":"Medical Ultrasonics"},"content":{"rendered":"<p>Physiotherapy transducer based on the model created by Martin Hughes, during his PhD at the University of Bath under the supervision of\u00a0<a href=\"http:\/\/www.isvr.soton.ac.uk\/STAFF\/staff83.htm\" target=\"_blank\" rel=\"noopener\">Professor Victor Humphrey<\/a>, assisted by funding from the\u00a0<a href=\"http:\/\/www.npl.co.uk\/acoustics\/facilities\/modelling\/ts-finelem.html\" target=\"_blank\" rel=\"noopener\">National Physical Laboratory<\/a>.<\/p>\n<p>A more complete description of the transducer can be found in &#8220;Finite Element and Boundary Element Modelling of a Medical Ultrasound Transducer and its Generated Near-Field&#8221; , University of Bath 2001.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-612\" src=\"\/wp-content\/uploads\/2017\/08\/physio01-645x306.gif\" alt=\"\" width=\"645\" height=\"306\" \/><\/p>\n<p>The piezoelectric disc of diameter 25mm and thickness 2mm, is axially polarised and excited by a sinusoidal voltage at 1.029MHz. The front matching layer has a thickness of \u03bb\/4. The surrounding acoustic medium is water.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-613\" src=\"\/wp-content\/uploads\/2017\/08\/physio02-571x257.gif\" alt=\"\" width=\"571\" height=\"257\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-604\" src=\"\/wp-content\/uploads\/2017\/08\/phy-disps-542x380.gif\" alt=\"\" width=\"542\" height=\"380\" \/><\/p>\n<p style=\"text-align: center;\">Animated structural deformation of piezoelectric disc and matching layer near axis of symmetry.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-610\" src=\"\/wp-content\/uploads\/2017\/08\/phy-press-748x380.gif\" alt=\"\" width=\"743\" height=\"380\" \/><\/p>\n<p style=\"text-align: center;\">Animated pressure field in front of the radiating surface.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\".\/index.php\/pafec-vibroacoustics-application-areas\/medical-ultrasonics\/transient-analysis\/\">Transient analysis of above physiotherapy transducer<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Physiotherapy transducer based on the model created by Martin Hughes, during his PhD at the University of Bath under the[&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":28,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/43"}],"collection":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=43"}],"version-history":[{"count":7,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/43\/revisions"}],"predecessor-version":[{"id":703,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/43\/revisions\/703"}],"up":[{"embeddable":true,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/28"}],"wp:attachment":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=43"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}