{"id":37487,"date":"2019-07-18T11:37:13","date_gmt":"2019-07-18T09:37:13","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=37487"},"modified":"2019-09-06T10:15:13","modified_gmt":"2019-09-06T08:15:13","slug":"soutenenance-de-these-martin-robin-contribution-a-letude-de-ladherence-des-structures-du-type-couche-sur-substrat-par-modes-de-rayleigh-generes-et-detectes-par-sources-laser","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/soutenenance-de-these-martin-robin-contribution-a-letude-de-ladherence-des-structures-du-type-couche-sur-substrat-par-modes-de-rayleigh-generes-et-detectes-par-sources-laser.html","title":{"rendered":"Soutenenance de th\u00e8se : Martin ROBIN, Contribution \u00e0 l\u2019\u00e9tude de l\u2019adh\u00e9rence des structures du type couche sur substrat par modes de Rayleigh g\u00e9n\u00e9r\u00e9s et d\u00e9tect\u00e9s par sources laser"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_12tf6vn8mjor\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-37487'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jy8h5qzu-2d986df89e08b63234f025caaa41ef13\">\n#top .av-special-heading.av-jy8h5qzu-2d986df89e08b63234f025caaa41ef13{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-jy8h5qzu-2d986df89e08b63234f025caaa41ef13 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jy8h5qzu-2d986df89e08b63234f025caaa41ef13 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jy8h5qzu-2d986df89e08b63234f025caaa41ef13 av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESIS: Contribution to the study of the adhesion of layer-on-substrate structures using Rayleigh modes generated and detected by laser sources<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 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='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<h5><strong style=\"font-size: 16px;\">Martin ROBIN<\/strong><\/h5>\n<p><strong>Monday 15 July 2019<br \/>\n<\/strong>Amphitheatre IEMN Dpt OAE - UPHF - Valenciennes<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury:<\/span><\/strong><\/h5>\n<ul>\n<li>Bertrand AUDOIN, Professor at the University of Bordeaux (Rapporteur)<\/li>\n<li>Mounsif ECHERIF EL KETTANI, Professor at the University of Le Havre (Rapporteur)<\/li>\n<li>Hossep ACHDJIAN, Senior Lecturer at INSA Centre Val De Loire (Examiner)<\/li>\n<li>Ms Doroth\u00e9e CALLENS-DEBAVELAERE, Senior Lecturer at UPHF (Examiner)<\/li>\n<li>Fr\u00e9d\u00e9ric JENOT, Professor at the UPHF (Co-Director)<\/li>\n<li>Mohammadi OUAFTOUH, Professor at the UPHF (Co-Director)<\/li>\n<\/ul>\n<p><strong>Summary:<\/strong><\/p>\n<p>Non-destructive characterisation of the adhesion of film-on-substrate structures is a major industrial and academic challenge. This type of sample is used for many applications and its lifespan depends largely on the quality of adhesion of the films to the substrate. This significantly modifies the dispersive behaviour of surface acoustic waves propagating in this type of structure. To generate and detect these waves, an Ultrasound-Laser device was chosen.<\/p>\n<p>Firstly, we sought to overcome the difficulties of interpretation usually encountered in the control of adhesion by surface acoustic waves. Variations in layer thickness can have an influence on wave dispersion comparable to that caused by adhesion. To achieve this, polymer films of virtually constant thickness are used and applied to an aluminium substrate. These films also have the added property of being transparent. This means that the laser pulse generating the acoustic waves can be focused through the film directly onto the surface of the substrate, placing the acoustic source at the film-substrate interface. The influence of the position of the source on the dispersive behaviour of surface acoustic waves and consequently on the control of adhesion quality is then studied experimentally and through finite element simulations.<\/p>\n<p>Finally, the adhesion of the various samples is characterised using the dispersion curves obtained using the Matrix-Pencil method applied to the experimental results. Using an inversion algorithm, the interface stiffnesses characteristic of the adhesion of the samples analysed are estimated.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":37492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-37487","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37487","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=37487"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37487\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/37492"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=37487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=37487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=37487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}