{"id":18418,"date":"2023-06-19T10:30:22","date_gmt":"2023-06-19T08:30:22","guid":{"rendered":"http:\/\/cedrat-technologies.com\/produit\/deformations-dynamiques-geantes-dans-les-actionneurs-et-les-transducteurs-magnetostrictifs\/"},"modified":"2023-07-20T11:20:35","modified_gmt":"2023-07-20T09:20:35","slug":"deformations-dynamiques-geantes-dans-les-actionneurs-et-les-transducteurs-magnetostrictifs","status":"publish","type":"product","link":"https:\/\/cedrat-technologies.com\/fr\/produit\/deformations-dynamiques-geantes-dans-les-actionneurs-et-les-transducteurs-magnetostrictifs\/","title":{"rendered":"D\u00e9formations dynamiques g\u00e9antes dans les actionneurs et les transducteurs magn\u00e9tostrictifs"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>La magn\u00e9tostriction se produit dans la plupart des mat\u00e9riaux ferromagn\u00e9tiques et entra\u00eene de nombreux effets [1,2]. Le plus utile est l&rsquo;effet Joule. Il est responsable de la dilatation (magn\u00e9tostriction positive) ou de la contraction (n\u00e9gative) d&rsquo;un barreau soumis \u00e0 un champ magn\u00e9tique statique longitudinal. Dans un mat\u00e9riau donn\u00e9, cette magn\u00e9tostriction est quadratique et se produit toujours dans la m\u00eame direction, quelle que soit la direction du champ. Les mat\u00e9riaux magn\u00e9tostrictifs g\u00e9ants (GMM), en particulier les terres rares et le fer d\u00e9couverts par A.E.Clark [3], pr\u00e9sentent des magn\u00e9tostractions deux fois sup\u00e9rieures \u00e0 celle du nickel. Parmi eux, le Tb0.3Dy0.7Fe1.9 brut, appel\u00e9 Terfenol-D, pr\u00e9sente le meilleur compromis entre une grande d\u00e9formation magn\u00e9tique et un faible champ magn\u00e9tique, \u00e0 temp\u00e9rature ambiante.<\/p>\n","protected":false},"featured_media":14924,"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":[1383,1384,1389,1464,1408,1409],"product_tag":[],"class_list":{"0":"post-18418","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-actionneurs-lineaires","7":"product_cat-actionneurs-lineaires-magnetiques","8":"product_cat-actionneurs-magnetostrictifs","9":"product_cat-publications-fr","10":"product_cat-transducteurs-ndt-shm","11":"product_cat-transducteurs-soniques","13":"first","14":"instock","15":"downloadable","16":"virtual","17":"purchasable","18":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product\/18418","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=18418"}],"version-history":[{"count":0,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product\/18418\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/media\/14924"}],"wp:attachment":[{"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/media?parent=18418"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_brand?post=18418"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_cat?post=18418"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/cedrat-technologies.com\/fr\/wp-json\/wp\/v2\/product_tag?post=18418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}