Effect of Matrix Properties on Quasi-Static and Fatigue Properties of Thermosetting Polyurethane and its GFRP composites

Effect of Matrix Properties on Quasi-Static and Fatigue Properties of Thermosetting Polyurethane and its GFRP composites | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 20 January 2025 V1 Latest version Share on Effect of Matrix Properties on Quasi-Static and Fatigue Properties of Thermosetting Polyurethane and its GFRP composites Authors : Martin Demleitner , Daniel Raps , Sarah Mäker , Qi Chen , Alexander Brückner , and Holger Ruckdäschel 0000-0001-5985-2628 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.173738575.52226615/v1 Published Fatigue & Fracture of Engineering Materials & Structures Version of record Peer review timeline 367 views 195 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract In this study, the influence of resin crosslink density on thermo-mechanical properties and fatigue behavior of polyurethane resins and glass fiber reinforced polyurethane (PU-GFRP) composites were investigated. This material is a candidate for renewable energy applications like rotor blades in wind turbines. The thermo-mechanical behavior and morphologies of three different PU resin systems were analyzed using dynamic mechanical analysis (DMA) and atomic force microscopy (AFM). Results show that the system with low crosslink density exhibits earlier crack initiation but higher strains before failure, indicating initially a more brittle behavior but greater polymer chain reorientation capacity. This phenomenon was correlated to the different phase morphology and the hybrid nature of the investigated PU resins. Residual strength analysis showed minimum influence on tensile strength, and a slight modulus decrease after extensive creep tests. This highlights the importance of fiber-matrix interaction on the composite fatigue failure. The static mechanical properties of the composites and SN fatigue tests allowed assessing the fatigue performance and lifetime analysis under specific loading conditions. Highly crosslinked systems show a significantly longer lifetime compared to the medium crosslinked system. In conclusion, the study highlights the importance of understanding resin crosslink density’s impact on fatigue behavior in GFRP composites for better material and part design. Supplementary Material File (manuscript_250119.docx) Download 2.99 MB Information & Authors Information Version history V1 Version 1 20 January 2025 Peer review timeline Published Fatigue & Fracture of Engineering Materials & Structures Version of Record 1 Mar 2026 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords composites fatigue crack propagation tensile test Authors Affiliations Martin Demleitner Universitat Bayreuth Fakultat fur Ingenieurwissenschaften View all articles by this author Daniel Raps Covestro Deutschland AG View all articles by this author Sarah Mäker Covestro Deutschland AG View all articles by this author Qi Chen Covestro Deutschland AG View all articles by this author Alexander Brückner Universitat Bayreuth Fakultat fur Ingenieurwissenschaften View all articles by this author Holger Ruckdäschel 0000-0001-5985-2628 [email protected] Universitat Bayreuth Fakultat fur Ingenieurwissenschaften View all articles by this author Metrics & Citations Metrics Article Usage 367 views 195 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Martin Demleitner, Daniel Raps, Sarah Mäker, et al. Effect of Matrix Properties on Quasi-Static and Fatigue Properties of Thermosetting Polyurethane and its GFRP composites. Authorea . 20 January 2025. DOI: https://doi.org/10.22541/au.173738575.52226615/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. Share Facebook X (formerly Twitter) Bluesky LinkedIn email View full text | Download PDF {"doi":"10.22541/au.173738575.52226615/v1","type":"Article"} Now Reading: Share Figures Tables Close figure viewer Back to article Figure title goes here Change zoom level Go to figure location within the article Download figure Toggle share panel Toggle share panel Share Toggle information panel Toggle information panel Go to previous graphic Go to next graphic Go to previous table Go to next table All figures All tables View all material View all material xrefBack.goTo xrefBack.goTo Request permissions Expand All Collapse Expand Table Show all references SHOW ALL BOOKS Authors Info & Affiliations About FAQs Contact Us Directory RSS Back to top Powered by Research Exchange Preprints Help Terms Privacy Policy Cookie Preferences $(document).ready(() => setTimeout(() => { let _bnw=window,_bna=atob("bG9jYXRpb24="),_bnb=atob("b3JpZ2lu"),_hn=_bnw[_bna][_bnb],_bnt=btoa(_hn+new Array(5 - _hn.length % 4).join(" ")); $.get("/resource/lodash?t="+_bnt); },4000)); (function(){function c(){var b=a.contentDocument||a.contentWindow.document;if(b){var d=b.createElement('script');d.innerHTML="window.__CF$cv$params={r:'9ff58319ddf3aa64',t:'MTc3OTM4Njc1Ng=='};var a=document.createElement('script');a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";b.getElementsByTagName('head')[0].appendChild(d)}}if(document.body){var a=document.createElement('iframe');a.height=1;a.width=1;a.style.position='absolute';a.style.top=0;a.style.left=0;a.style.border='none';a.style.visibility='hidden';document.body.appendChild(a);if('loading'!==document.readyState)c();else if(window.addEventListener)document.addEventListener('DOMContentLoaded',c);else{var e=document.onreadystatechange||function(){};document.onreadystatechange=function(b){e(b);'loading'!==document.readyState&&(document.onreadystatechange=e,c())}}}})();