{"id":18485,"date":"2023-06-19T10:31:49","date_gmt":"2023-06-19T08:31:49","guid":{"rendered":"http:\/\/cedrat-technologies.com\/produit\/transducteur-piezo-composite-pour-la-selectivite-de-mode-et-de-direction-des-ondes-de-lamb\/"},"modified":"2023-07-20T11:20:22","modified_gmt":"2023-07-20T09:20:22","slug":"transducteur-piezo-composite-pour-la-selectivite-de-mode-et-de-direction-des-ondes-de-lamb","status":"publish","type":"product","link":"https:\/\/cedrat-technologies.com\/fr\/produit\/transducteur-piezo-composite-pour-la-selectivite-de-mode-et-de-direction-des-ondes-de-lamb\/","title":{"rendered":"Transducteur pi\u00e9zo-composite pour la s\u00e9lectivit\u00e9 de mode et de direction des ondes de Lamb"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Les applications SHM (Structural Health Monitoring) bas\u00e9es sur les ultrasons reposent g\u00e9n\u00e9ralement sur l&rsquo;utilisation de patchs pi\u00e9zo\u00e9l\u00e9ctriques pour \u00e9mettre et recevoir des ondes ultrasonores. L&rsquo;objectif est d&rsquo;\u00e9tudier la propagation des ondes \u00e0 travers une structure afin d&rsquo;\u00e9valuer son int\u00e9grit\u00e9 structurelle. En raison du nombre \u00e9lev\u00e9 d&rsquo;\u00e9chos et des modes de propagation possibles des ondes \u00e0 l&rsquo;int\u00e9rieur de la structure, ces applications souffrent de la lourdeur du traitement des signaux. Cet article pr\u00e9sente un patch pi\u00e9zo\u00e9lectrique composite qui a \u00e9t\u00e9 con\u00e7u et test\u00e9 avec succ\u00e8s pour r\u00e9duire la complexit\u00e9 des sch\u00e9mas de d\u00e9tection SHM en s\u00e9lectionnant le mode et la direction des ondes Lamb re\u00e7ues. Le composite pi\u00e9zo\u00e9lectrique est compos\u00e9 d&rsquo;une rang\u00e9e de huit piliers c\u00e9ramiques ind\u00e9pendants s\u00e9par\u00e9s par un polym\u00e8re, ce qui en fait une matrice 1-D de patchs pi\u00e9zo\u00e9lectriques ind\u00e9pendants. Utilis\u00e9 avec une \u00e9lectronique et un traitement des signaux ad\u00e9quats, il a \u00e9t\u00e9 d\u00e9montr\u00e9 qu&rsquo;il permettait de s\u00e9lectionner la direction et le mode des ondes Lamb.<\/p>\n","protected":false},"featured_media":15113,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"yes"},"product_brand":[],"product_cat":[1383,1491,1499,1464,1408],"product_tag":[],"class_list":{"0":"post-18485","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-actionneurs-lineaires","7":"product_cat-domaine-fr","8":"product_cat-essais-mesures-fr","9":"product_cat-publications-fr","10":"product_cat-transducteurs-ndt-shm","12":"first","13":"instock","14":"downloadable","15":"virtual","16":"purchasable","17":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product\/18485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/comments?post=18485"}],"version-history":[{"count":0,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product\/18485\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/media\/15113"}],"wp:attachment":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/media?parent=18485"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_brand?post=18485"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_cat?post=18485"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_tag?post=18485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}