{"id":72199,"date":"2025-01-31T12:38:15","date_gmt":"2025-01-31T10:38:15","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=72199"},"modified":"2025-02-25T12:43:17","modified_gmt":"2025-02-25T10:43:17","slug":"sans-colle-ca-colle","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/sans-colle-ca-colle.html","title":{"rendered":"Sans colle, \u00e7a colle\u00a0?"},"content":{"rendered":"<div  class='flex_column av-m6krraxq-97d69656d4c919a6c4f01dd78dbe01eb av_one_fifth  avia-builder-el-0  el_before_av_two_fifth  avia-builder-el-first  first flex_column_div'     ><section  class='av_textblock_section av-suht1j-03e4758c796538223b42a0fbf5252841'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='av-small-hide av-mini-hide avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/electro_adhesion_5-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-72284\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/electro_adhesion_5-1.jpg\" alt=\"\" width=\"181\" height=\"493\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/electro_adhesion_5-1.jpg 181w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/electro_adhesion_5-1-110x300.jpg 110w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/electro_adhesion_5-1-4x12.jpg 4w\" sizes=\"auto, (max-width: 181px) 100vw, 181px\" \/><\/a><\/p>\n<\/div><\/section><\/div>\n<div  class='flex_column av-12axgqv-9c88f83cb603be85ecae3180f63936dc av_two_fifth  avia-builder-el-2  el_after_av_one_fifth  el_before_av_two_fifth  flex_column_div'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6kmtun7-c32a066972c03f9fdb4bad5c745a39b9\">\n#top .av_textblock_section.av-m6kmtun7-c32a066972c03f9fdb4bad5c745a39b9 .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m6kmtun7-c32a066972c03f9fdb4bad5c745a39b9'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1><\/h1>\n<h1 style=\"text-align: left;\"><span style=\"color: #52c704;\">Sans colle, \u00e7a colle\u00a0?<\/span><\/h1>\n<blockquote>\n<p>Gr\u00e2ce \u00e0 un dispositif d\u2019\u00e9lectro-adh\u00e9sion, nous caract\u00e9risons pour la premi\u00e8re fois l\u2019adh\u00e9rence entre un film et un substrat obtenue sans couche interm\u00e9diaire de colle. En effet, cette derni\u00e8re poss\u00e8de g\u00e9n\u00e9ralement des propri\u00e9t\u00e9s mal ma\u00eetris\u00e9es compliquant fortement l\u2019\u00e9tude de l\u2019adh\u00e9rence. Pour cela, des ondes ultrasonores sont g\u00e9n\u00e9r\u00e9es et d\u00e9tect\u00e9es par lasers afin de sonder sans contact l\u2019interface constitu\u00e9e. Les r\u00e9sultats obtenus gr\u00e2ce \u00e0 cette m\u00e9thode non destructive montrent clairement la sensibilit\u00e9 des ondes acoustiques de surface aux seules variations de l\u2019adh\u00e9rence du film induites \u00e9lectrostatiquement.<\/p>\n<\/blockquote>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6kmp2oh-21712fc694f40209ce1a2c4f04d96e51\">\n#top .av_textblock_section.av-m6kmp2oh-21712fc694f40209ce1a2c4f04d96e51 .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m6kmp2oh-21712fc694f40209ce1a2c4f04d96e51'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1><\/h1>\n<p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-72200 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1.jpg\" alt=\"\" width=\"873\" height=\"493\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1.jpg 873w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1-300x169.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1-768x434.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1-18x10.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_1-705x398.jpg 705w\" sizes=\"auto, (max-width: 873px) 100vw, 873px\" \/><\/a><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6kr52e8-fe07b1934f4b46d4f2707b454a604b39\">\n#top .av_textblock_section.av-m6kr52e8-fe07b1934f4b46d4f2707b454a604b39 .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m6kr52e8-fe07b1934f4b46d4f2707b454a604b39'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong><span style=\"color: #ff7b00;\"><span style=\"color: #008080;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-8dfdff27d004ce6bf7c09dd95e02a67c\">\n.av_font_icon.av-mqde7m-8dfdff27d004ce6bf7c09dd95e02a67c{\ncolor:#52c704;\nborder-color:#52c704;\n}\n.av_font_icon.av-mqde7m-8dfdff27d004ce6bf7c09dd95e02a67c .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-8dfdff27d004ce6bf7c09dd95e02a67c avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue803' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/span><\/span><\/strong><span style=\"color: #52c704;\">Cette \u00e9tude concerne l\u2019adh\u00e9rence des mat\u00e9riaux bien souvent cruciale pour la fiabilit\u00e9 des technologies associ\u00e9es aux rev\u00eatements. Plus pr\u00e9cis\u00e9ment, la qualit\u00e9 du contact entre un film en chlorure de polyvinyle et un substrat d\u2019aluminium est \u00e9valu\u00e9e de mani\u00e8re non destructive par Ultrasons-Laser.<\/span> G\u00e9n\u00e9ralement, une couche d\u2019adh\u00e9sif entre le film et le substrat est utilis\u00e9e cependant ses propri\u00e9t\u00e9s (\u00e9paisseur, homog\u00e9n\u00e9it\u00e9\u2026) sont difficilement ma\u00eetrisables et compliquent la caract\u00e9risation de l\u2019adh\u00e9rence. C\u2019est pourquoi un dispositif original d\u2019\u00e9lectro-adh\u00e9sion (Figure 1) est mis en \u0153uvre afin de faire varier l\u2019adh\u00e9rence du film par l\u2019application de champs \u00e9lectrostatiques de diff\u00e9rentes intensit\u00e9s, dispensant ainsi de l\u2019utilisation d\u2019une couche de colle (Figure 2). Par ailleurs, la propagation des ondes acoustiques de surface dans la structure constitu\u00e9e est sensible \u00e0 l\u2019adh\u00e9rence via la dispersion des vitesses de phase. En consid\u00e9rant l\u2019effet des rigidit\u00e9s normales et tangentielles \u00e0 l\u2019interface, les courbes de dispersion des modes de Rayleigh ont \u00e9t\u00e9 d\u00e9termin\u00e9es. Celles-ci ont \u00e9galement \u00e9t\u00e9 obtenues par la m\u00e9thode des \u00e9l\u00e9ments finis (Figures 3 et 4). Exp\u00e9rimentalement, ces ondes guid\u00e9es sont g\u00e9n\u00e9r\u00e9es par un laser Nd:YAG doubl\u00e9 en fr\u00e9quence et d\u00e9tect\u00e9es par un interf\u00e9rom\u00e8tre h\u00e9t\u00e9rodyne de type Mach-Zehnder. L\u2019analyse des courbes de dispersion de diff\u00e9rents modes a permis de distinguer chaque niveau d\u2019adh\u00e9rence. <strong><span style=\"color: #52c704;\">Ces r\u00e9sultats novateurs ouvrent la voie \u00e0 de futures \u00e9tudes par Ultrasons-Laser afin de mieux quantifier le ph\u00e9nom\u00e8ne d\u2019\u00e9lectro-adh\u00e9sion pour divers mat\u00e9riaux.<\/span><\/strong><\/p>\n<hr \/>\n<p><strong><span style=\"color: #ff7b00;\"><span style=\"color: #008080;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-1-62e863421aa787cad05a807e78f1d5f6\">\n.av_font_icon.av-mqde7m-1-62e863421aa787cad05a807e78f1d5f6{\ncolor:#52c704;\nborder-color:#52c704;\n}\n.av_font_icon.av-mqde7m-1-62e863421aa787cad05a807e78f1d5f6 .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-1-62e863421aa787cad05a807e78f1d5f6 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue826' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/span><\/span><\/strong>To find out more, click here:<\/p>\n<p style=\"text-align: left;\">Mustapha Baher, Meriem Chrifi Alaoui, Fr\u00e9d\u00e9ric Jenot, Mohammadi Ouaftouh, Marc Duquennoy, \u00ab\u00a0Characterization of electro-adhesion using surface waves generated and detected by Laser-Ultrasonics\u00a0\u00bb, NDT&amp;E International, Volume 147, 2024, 103191, ISSN 0963-8695, <a href=\"https:\/\/doi.org\/10.1016\/j.ndteint.2024.103191\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1016\/j.ndteint.2024.103191<\/a>\u00a0 <a href=\"https:\/\/hal.science\/hal-04664705v1\" target=\"_blank\" rel=\"noopener\">https:\/\/hal.science\/hal-04664705v1<\/a><\/p>\n<div  class='avia-button-wrap av-rpqvoq-f6125f21e684ced9bc9fa1aa5342d242-wrap avia-button-left  avia-builder-el-8  el_after_av_font_icon  avia-builder-el-last'><a href='mailto:Meriem.Chrifialaoui@uphf.fr'  class='avia-button av-rpqvoq-f6125f21e684ced9bc9fa1aa5342d242 av-link-btn avia-icon_select-yes-left-icon avia-size-light avia-position-left avia-color-silver'   aria-label=\"Meriem Chrifi Alaoui \"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Meriem Chrifi Alaoui <\/span><\/a><\/div>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-oh4xuv-ff0d7ecebf95d5919022be6698e97727 av_two_fifth  avia-builder-el-9  el_after_av_two_fifth  avia-builder-el-last  flex_column_div'     ><p><section  class='av_textblock_section av-m6qhffu5-acb746f6c47491550730cea1b534827d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='av-small-hide av-mini-hide avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/carre_neutre.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-72285\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/carre_neutre.jpg\" alt=\"\" width=\"251\" height=\"56\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/carre_neutre.jpg 175w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/02\/carre_neutre-18x4.jpg 18w\" sizes=\"auto, (max-width: 251px) 100vw, 251px\" \/><\/a><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6kr3jox-a5640ae8b9f9ad624ead06a802a1f58d\">\n#top .av_textblock_section.av-m6kr3jox-a5640ae8b9f9ad624ead06a802a1f58d .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m6kr3jox-a5640ae8b9f9ad624ead06a802a1f58d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_72211\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-72211\" class=\"wp-image-72211\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion.jpg\" alt=\"\" width=\"500\" height=\"267\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion.jpg 847w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion-300x160.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion-768x411.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion-18x10.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion-845x453.jpg 845w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion-705x377.jpg 705w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><p id=\"caption-attachment-72211\" class=\"wp-caption-text\">Figure 1 : (a) Dispositif d\u2019\u00e9lectro-adh\u00e9sion, (b) Source de champ utilis\u00e9e, (c) Configuration exp\u00e9rimentale<\/p><\/div>\n<hr \/>\n<div id=\"attachment_72215\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-72215\" class=\"wp-image-72215\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2.jpg\" alt=\"\" width=\"500\" height=\"171\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2.jpg 1400w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2-300x103.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2-1030x352.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2-768x263.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2-18x6.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_2-705x241.jpg 705w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><p id=\"caption-attachment-72215\" class=\"wp-caption-text\">Figure 2 : Adh\u00e9rence d&rsquo;un film de PVC \u00e0 un substrat d&rsquo;aluminium pour deux champs \u00e9lectrostatiques d\u2019intensit\u00e9 croissante. Tension appliqu\u00e9e 3,6 kV (a) et 3,8 kV (b)<\/p><\/div>\n<hr \/>\n<div id=\"attachment_72216\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-72216\" class=\"wp-image-72216\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3.jpg\" alt=\"\" width=\"500\" height=\"252\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3.jpg 1200w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3-300x151.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3-1030x519.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3-768x387.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3-18x9.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_3-705x355.jpg 705w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><p id=\"caption-attachment-72216\" class=\"wp-caption-text\">Figure 3 : Modes de Rayleigh d\u00e9termin\u00e9s par \u00e9l\u00e9ments finis et courbes de dispersion th\u00e9oriques (traits noirs) pour un contact parfait film\/substrat<\/p><\/div>\n<hr \/>\n<div id=\"attachment_72217\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-72217\" class=\"wp-image-72217\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4.jpg\" alt=\"\" width=\"500\" height=\"323\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4.jpg 1200w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4-300x194.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4-1030x666.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4-768x497.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4-18x12.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/electro_adhesion_4-705x456.jpg 705w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><p id=\"caption-attachment-72217\" class=\"wp-caption-text\">Figure 4 : Simulation par \u00e9l\u00e9ments finis du d\u00e9placement normal des ondes acoustiques g\u00e9n\u00e9r\u00e9es dans la structure film\/substrat<\/p><\/div>\n<\/div><\/section><\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[],"class_list":["post-72199","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/72199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=72199"}],"version-history":[{"count":1,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/72199\/revisions"}],"predecessor-version":[{"id":76464,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/72199\/revisions\/76464"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=72199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=72199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=72199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}