{"id":17584,"date":"2025-04-29T13:20:30","date_gmt":"2025-04-29T13:20:30","guid":{"rendered":"https:\/\/amade.udg.edu\/?p=17584"},"modified":"2025-04-29T13:20:32","modified_gmt":"2025-04-29T13:20:32","slug":"doctoral-thesis-on-delamination-in-large-composite-structures","status":"publish","type":"post","link":"https:\/\/amade.udg.edu\/index.php\/2025\/04\/29\/doctoral-thesis-on-delamination-in-large-composite-structures\/","title":{"rendered":"Doctoral Thesis on Delamination in Large Composite Structures"},"content":{"rendered":"\n<p>On April 28, Pierre Daniel successfully defended his PhD thesis titled <strong>\u00abA strategy for efficient modelling of composite delamination in large structures\u00bb<\/strong> at the University of Girona. His research was co-supervised by <strong>Dr. Pere Maim\u00ed<\/strong> (Universitat de Girona) and <strong>Dr. Martin Fagerstr\u00f6m<\/strong> (Chalmers University of Technology).<br><br><em>About the research:<\/em><br><br>Delamination \u2014 the separation between layers in composite laminates \u2014 poses a critical challenge in industries relying on fibre-reinforced polymers, such as aerospace, automotive, and wind energy. While current numerical models can simulate this phenomenon with high accuracy, their computational cost often makes them impractical for large-scale structures.<br><\/p>\n\n\n\n<p>Pierre\u2019s work proposes an <strong>adaptive modelling strategy<\/strong> that begins with a single element for the laminate\u2019s thickness and introduces local refinements <strong>only where delamination occurs<\/strong>. This drastically cuts down computational demand while maintaining accuracy where it matters most.<br><br><em>Key contributions:<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A novel method to reconstructs out-of-plane stresses across the laminate thickness. \u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An adaptive crack growth approach based on large finite elements (~5 mm), using an energy-based criterion (Virtual Crack Closure Technique) coupled with a new cohesive law to accurately model the crack advancement while dissipating the fracture energy.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A new algorithm capable of handling distorted meshes and complex delamination fronts, making it applicable to real-world structures.<\/li>\n<\/ul>\n\n\n\n<p><br>These methods can be used independently \u2014 for instance, to identify high-stress regions in large structures or to perform efficient damage tolerance assessments \u2014 but their combined use offers a powerful and scalable modelling strategy for large composite structures, drastically reducing the computational cost while maintaining accuracy.<br><br>Explore some of his publications:<br><a href=\"https:\/\/doi.org\/10.1016\/j.compstruct.2020.112675\">https:\/\/doi.org\/10.1016\/j.compstruct.2020.112675<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.1016\/j.compositesa.2022.107423\">https:\/\/doi.org\/10.1016\/j.compositesa.2022.107423<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.1016\/j.engfracmech.2024.110193\">https:\/\/doi.org\/10.1016\/j.engfracmech.2024.110193<\/a><br><br>This research was funded by <strong>BTECH<\/strong>.<br><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>On April 28, Pierre Daniel successfully defended his PhD thesis titled \u00abA strategy for efficient modelling of composite delamination in large structures\u00bb at the University of Girona. His research was co-supervised by Dr. Pere Maim\u00ed (Universitat de Girona) and Dr&#8230;.<\/p>\n","protected":false},"author":6,"featured_media":17585,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-17584","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"_links":{"self":[{"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/posts\/17584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/comments?post=17584"}],"version-history":[{"count":2,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/posts\/17584\/revisions"}],"predecessor-version":[{"id":17587,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/posts\/17584\/revisions\/17587"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/media\/17585"}],"wp:attachment":[{"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/media?parent=17584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/categories?post=17584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/amade.udg.edu\/index.php\/wp-json\/wp\/v2\/tags?post=17584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}