{"id":137,"date":"2025-04-23T11:33:06","date_gmt":"2025-04-23T11:33:06","guid":{"rendered":"http:\/\/test.jobwijnen.com\/?page_id=137"},"modified":"2025-06-09T19:38:07","modified_gmt":"2025-06-09T19:38:07","slug":"about-me","status":"publish","type":"page","link":"https:\/\/jobwijnen.com\/index.php\/about-me\/","title":{"rendered":"About me"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Short resume<\/h1>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/jobwijnen.com\/wp-content\/uploads\/2025\/06\/CV_JobWijnen.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of CV_JobWijnen.\"><\/object><a id=\"wp-block-file--media-d9696354-dcac-42d7-8857-f3423064c75c\" href=\"https:\/\/jobwijnen.com\/wp-content\/uploads\/2025\/06\/CV_JobWijnen.pdf\">CV_JobWijnen<\/a><a href=\"https:\/\/jobwijnen.com\/wp-content\/uploads\/2025\/06\/CV_JobWijnen.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d9696354-dcac-42d7-8857-f3423064c75c\">Download<\/a><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Experience<\/h1>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Research associate &#8212; University of Oxford &#8212; 2023-2025<\/strong><\/h4>\n\n\n\n<p>I studied the performance of natural gas pipelines when transporting hydrogen. Hydrogen enters the pipeline steels, which significantly reduces the fracture properties. I used advanced multi-physics models to predict the hydrogen failure pressures of pipelines.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Developed a thermal-metallurgical-mechanical welding simulation framework that predicts heterogeneous properties, microstructure constituents, hardness maps, and residual stresses in pipeline welds.<\/li>\n\n\n\n<li>Employed elastic-plastic phase field fracture models coupled to hydrogen diffusion to predict the failure pressures of flawed pipelines. The results of the welding model were used as initial input.<\/li>\n\n\n\n<li>Connected advanced simulation results to industrial standards for defect assessments to provide guidelines when using these standards in the presence of hydrogen.<\/li>\n\n\n\n<li>In cooperation with the <a href=\"https:\/\/epri.com\">Electric Power Energy Research Institute (EPRI)<\/a>.<\/li>\n<\/ul>\n\n\n\n<p>During my period at the <a href=\"https:\/\/ox.ac.uk\/\">University of Oxford<\/a> I was associated with the <a href=\"https:\/\/mechmat.web.ox.ac.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">Mechanics of Materials Lab<\/a> lead by <a href=\"https:\/\/www.empaneda.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Emilio Mart\u00ednez-Pa\u00f1eda<\/a>, in the <a href=\"https:\/\/eng.ox.ac.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">Department of Engineering Science<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Web developer &#8212; D-web solutions &#8212; 2016-2018<\/h4>\n\n\n\n<p>This was a part-time job while obtaining my MSc. degree. I mainly worked on the back-end development of websites. Programming languages I used included PHP, SQL, Javascript and HTML.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Education<\/h1>\n\n\n\n<h4 class=\"wp-block-heading\">Doctor of Philosophy (PhD) &#8212; Eindhoven University of Technology &#8212; 2019-2023<\/h4>\n\n\n\n<p>During my PhD I studied the deformation of dual-phase steel microstructures using advanced plasticity models. Such steels are widely used in the automotive industry due to an excellent combination of strength and ductility.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Developed the discrete slip plane model,  a crystal plasticity model that introduces heterogeneous properties in single grains. The model accurately captures the stochastic and heterogeneous deformation that is observed in the deformation of steels at the microscale.<\/li>\n\n\n\n<li>Conducted integrated numerical-experimental studies on dual-phase steel microstructures and its constituents. This was done in close collaboration with an experimental colleague. Experiments were used to validate simulations, while simulations were used to elucidate experimental observations.<\/li>\n<\/ul>\n\n\n\n<p>I conducted my PhD research in the <a href=\"https:\/\/www.tue.nl\/en\/research\/research-groups\/mechanics-of-materials\" target=\"_blank\" rel=\"noreferrer noopener\">Mechanics of Materials group<\/a>, at the Department of Mechanical Engineering, under the supervision of Ron Peerlings, Johan Hoefnagels, and Marc Geers.<\/p>\n\n\n\n<p><a href=\"https:\/\/research.tue.nl\/en\/publications\/discrete-slip-plane-modeling-of-heterogeneous-microplasticity-for\" target=\"_blank\" rel=\"noreferrer noopener\">Link to my PhD dissertation<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Master of Science (MSc) &#8212; Mechanical Engineering &#8212; Eindhoven University of Technology &#8212; 2016-2018<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I obtained my degree with a specialization in Mechanics of Materials. I followed courses related to solid mechanics, fluid mechanics, finite element methods, and scientific computing.<\/li>\n\n\n\n<li><strong>Internship: National University of Singapore<\/strong><br>I worked on gradient damage models for accurately predicting the fracture of concrete. The gradient damage models were implemented using different equivalent strain measures, which were tested against experimental data.<\/li>\n\n\n\n<li><strong>Master thesis: Immersed methods for modeling complex microstructures of composite materials<\/strong><br>In my graduation project I worked on a computational framework which sets up simulations of composite microstructures based on CT-scan data. I developed an algorithm that extracts the fiber directions from the images. The simulations were performed using the finite cell method, which is an immersed method that avoids needing a conforming mesh.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Bachelor of Science (BSc) &#8212; Mechanical Engineering &#8212; Eindhoven University of Technology &#8212; 2013-2016<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Graduation project on locally resonant acoustic metamaterials. I studied the effects of visco-elastic material properties on the wave attenuation of the material.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Pre-university education (VWO) &#8212; Rythovius College, Eersel &#8212; 2007-2013<\/h4>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Skills<\/h1>\n\n\n\n<h4 class=\"wp-block-heading\">Project skills<\/h4>\n\n\n\n<p>I have been a part of two large projects, namely my PhD project and my postdoc project. In addition, I have played a role in numerous student projects. During these projects I have learned valuable skills.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Project management<\/strong><br>Planning, forecasting, and executing of longer projects (several years) and shorter projects (several months). <\/li>\n\n\n\n<li><strong>Communication<\/strong><br>Communication of results on various levels. Research outcomes were communicated to the scientific community via scientific papers and conferences. In addition, communication to non-expert stakeholders involved in projects required presenting project progress in an easy manner, focusing on project outcomes and lessons learned.<\/li>\n\n\n\n<li><strong>Collaboration<\/strong><br>I have collaborated extensively with colleagues, for example, with experimentalists.  This required good coordination and clear communication.<\/li>\n\n\n\n<li><strong>Supervision<\/strong><br>I have supervised several master and bachelor graduation projects, which required keeping overview of a project where the work is done by other people.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Finite element software<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ABAQUS <\/strong><br>I have several year of experience running various types of simulations in ABAQUS. This includes coupled thermal-mechanical analyses, fracture mechanics simulations, and self-implemented advanced material models (e.g. phase-field fracture). I have used numerous Fortran user-subroutines to implement advanced material behavior or boundary conditions and am familiar with the ABAQUS Python scripting language.<\/li>\n\n\n\n<li><strong>Msc.Marc\/Mentat<\/strong> <br>I have extensively used Msc.Marc\/Mentat during my PhD research. This included conducting crystal plasticity simulations, implemented via Fortran user-subroutines, and the implementation of advanced boundary conditions for representative volume elements (e.g. symmetric).<\/li>\n\n\n\n<li><strong>Moose<\/strong> <br>I have implemented several material models in <a href=\"https:\/\/mooseframework.inl.gov\/\">Moose<\/a>, an open-source finite element framework written in C++. Such open-source frameworks often provide more flexibility than commercial software.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Programming<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Python<\/strong><br>Is my go-to scripting language. I have used Python for more than 5 years for numerous pre- and post-processing scripts, data analysis scripts, and small simulation programs.<\/li>\n\n\n\n<li><strong>C++<\/strong><br>I have used C++ for writing finite element code. This includes small programs build from scratch and extensions of larger finite element frameworks using libraries such as <a href=\"https:\/\/mooseframework.inl.gov\/\">Moose<\/a> and <a href=\"https:\/\/dynaflow.com\/software\/jive\/\">Jem\/Jive<\/a>.<\/li>\n\n\n\n<li><strong>Fortran<\/strong><br>I have extensively used Fortran to extend the capabilities of commercial FE software via user-subroutines.<\/li>\n\n\n\n<li><strong>Matlab<\/strong><br>I have used Matlab throughout my education and PhD period. <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Teaching<\/h4>\n\n\n\n<p>I have helped with teaching several courses to students. I have been extensively involved in the course Numerical Methods For Solid And Fluid Mechanics. Additionally, I have been involved in the courses Experimental And Numerical Skills and Micromechanics.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Short resume Experience Research associate &#8212; University of Oxford &#8212; 2023-2025 I studied the performance of natural gas pipelines when transporting hydrogen. Hydrogen enters the pipeline steels, which significantly reduces the fracture properties. I used advanced multi-physics models to predict the hydrogen failure pressures of pipelines. During my period at the University of Oxford I [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-137","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/pages\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/comments?post=137"}],"version-history":[{"count":28,"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/pages\/137\/revisions"}],"predecessor-version":[{"id":200,"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/pages\/137\/revisions\/200"}],"wp:attachment":[{"href":"https:\/\/jobwijnen.com\/index.php\/wp-json\/wp\/v2\/media?parent=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}