{"id":55309,"date":"2023-02-06T12:07:06","date_gmt":"2023-02-06T10:07:06","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=55309"},"modified":"2023-02-06T12:07:06","modified_gmt":"2023-02-06T10:07:06","slug":"these-bahouth-r-interaction-des-ondes-ultrasonore-avec-les-endommagements-en-exploitant-la-transmission-de-donnees-numeriques-par-ondes-guidees-application-aux-vehicules-intelligents","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/theses-2022\/these-bahouth-r-interaction-des-ondes-ultrasonore-avec-les-endommagements-en-exploitant-la-transmission-de-donnees-numeriques-par-ondes-guidees-application-aux-vehicules-intelligents.html","title":{"rendered":"THESIS: BAHOUTH R. - Interaction of ultrasonic waves with damage using digital data transmission by guided waves: application to intelligent vehicles"},"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_14iraxlhuwpk0\" 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-55309'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lawjakjg-9fe0e4ee34b7fedc093e664de91bbbd6\">\n#top .av-special-heading.av-lawjakjg-9fe0e4ee34b7fedc093e664de91bbbd6{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-lawjakjg-9fe0e4ee34b7fedc093e664de91bbbd6 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lawjakjg-9fe0e4ee34b7fedc093e664de91bbbd6 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lawjakjg-9fe0e4ee34b7fedc093e664de91bbbd6 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\"  >THESE : BAHOUTH R. &#8211; Interaction des ondes ultrasonore avec les endommagements en exploitant la transmission de donn\u00e9es num\u00e9riques par ondes guid\u00e9es : application aux v\u00e9hicules intelligents <\/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<p><strong>BAHOUTH R. <\/strong><\/p>\n<p>Soutenance 7 Juin 2022<\/p>\n<p>Th\u00e8se de doctorat en Acoustique, Universit\u00e9 Polytechnique Hauts-de-France, ED PHF,<\/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<ul>\n<li><\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>La transmission de donn\u00e9es num\u00e9riques \u00e0 travers des canaux m\u00e9talliques est recommand\u00e9e dans certaines industries comme le nucl\u00e9aire, l\u2019a\u00e9rospatiale et les v\u00e9hicules intelligents. En plus de l\u2019effet de la cage de Faraday des ondes \u00e9lectromagn\u00e9tiques, un autre probl\u00e8me li\u00e9 \u00e0 la pr\u00e9sence des endommagements existe. Pour cela, les ondes guid\u00e9es ultrasonores, telles que les ondes de Lamb, peuvent \u00eatre un bon substitut, car elles peuvent fournir des informations sur l\u2019\u00e9tat de sant\u00e9 de la structure. L\u2019objectif de ce travail est de construire une plate-forme de communication sans fil \u00e0 haut d\u00e9bit en assurant une d\u00e9tection d\u2019endommagement simultan\u00e9ment et en utilisant des ondes guid\u00e9es ultrasonores, \u00e0 travers des plaques saines et endommag\u00e9es. Dans un premier temps, les d\u00e9modulations coh\u00e9rentes et non coh\u00e9rent par amplitude, Ampltidue Shift Keying (ASK) et On-Off- Keying (OOK) et par phase, Binary Phase Shift Keying (BPSK) sont \u00e9tudi\u00e9. Les r\u00e9sultats pour la plaque saine ont montr\u00e9 que la dispersion, les multiples r\u00e9flexions affectent fortement la qualit\u00e9 du signal. C\u2019est pour cela un algorithme de d\u00e9modulation num\u00e9rique bas\u00e9 sur l\u2019intercorrelation est test\u00e9 exp\u00e9rimentalement pour une plaque saine. Apr\u00e8s cela, l\u2019effet des multiples r\u00e9flexions et des conversions de mode caus\u00e9es par les Encoches Sym\u00e9triques et Asym\u00e9triques (ES et EA), sont \u00e9tudi\u00e9s en utilisant la m\u00e9thode BPSK qui offre la stabilit\u00e9 et le d\u00e9bit de donn\u00e9es les plus \u00e9lev\u00e9s. Les r\u00e9sultats exp\u00e9rimentaux bas\u00e9s sur l\u2019analyse du Pourcentage d\u2019Erreur des Bits (PEB) prouvent que l\u2019algorithme a r\u00e9ussi \u00e0 compenser l\u2019effet de la dispersion pour la plaque saine, et de multiples r\u00e9flexions et conversions de mode pour les plaques endommag\u00e9es. Enfin, un concept de communication et de d\u00e9tection des endommagements simultan\u00e9 en utilisant une simulation par \u00e9l\u00e9ment fini est propos\u00e9. Ce concept est bas\u00e9 sur la s\u00e9paration des modes fondamentaux et du pourcentage de ressemblance des signaux. Les r\u00e9sultats ont montr\u00e9 une diminution proportionnelle du pourcentage de ressemblance pour le mode S0 par rapport \u00e0 la plaque saine, avec l\u2019augmentation de la profondeur d\u2019endommagement. La diminution dans le cas des EAs \u00e9tait sup\u00e9rieure aux ESs.<\/p>\n<h5>Abstract:<\/h5>\n<p>The transmission of digital data through metallic channels is recommended in certain industries such as nuclear, aerospace and intelligent vehicles. In addition to the Faraday cage effect of electromagnetic waves, another problem related to the presence of damage exists. For this, ultrasonic guided waves, such as Lamb waves, can be a good substitute, as they can provide information about the health of the structure. The objective of this work is to build a high-speed wireless communication platform by providing damage detection simultaneously and using guided ultrasonic waves, through healthy and damaged plates. First, coherent and non-coherent demodulations by amplitude, Ampltidue Shift Keying (ASK) and On-Off- Keying (OOK) and by phase, Binary Phase Shift Keying (BPSK) are studied. The results for the healthy plate showed that dispersion, multiple reflections strongly affect the signal quality. Therefore a digital demodulation algorithm based on intercorrelation is experimentally tested for a healthy slab. After that, the effect of multiple reflections and mode conversions caused by Symmetric and Asymmetric Notches (ES and EA), are studied using the BPSK method which offers the highest stability and data rate. Experimental results based on the Bit Percentage Error (BPE) analysis prove that the algorithm successfully compensated for the effect of dispersion for the healthy plate, and multiple reflections and mode conversions for the damaged plates. Finally, a concept for simultaneous communication and damage detection using finite element simulation is proposed. This concept is based on the separation of the fundamental modes and the percentage of similarity of the signals. The results showed a proportional decrease in the percentage of similarity for the S0 mode with respect to the healthy plate with increasing damage depth. The decrease in the case of EAs was greater than ESs.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[316],"tags":[],"class_list":["post-55309","post","type-post","status-publish","format-standard","hentry","category-theses-2022"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55309","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\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=55309"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55309\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=55309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=55309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=55309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}