Fatigue failure of incorporated crack HTPB(Hydroxyl-terminated polybutadiene) propellant under strain control

Fatigue failure of incorporated crack HTPB(Hydroxyl-terminated polybutadiene) propellant under strain control | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Fatigue failure of incorporated crack HTPB(Hydroxyl-terminated polybutadiene) propellant under strain control Genfeng Li, Bo Gao, Hao Hu, Ruifu Cui, Jiwei Feng, Jian He This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4716827/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 14 Feb, 2025 Read the published version in Scientific Reports → Version 1 posted 12 You are reading this latest preprint version Abstract To study the fatigue properties of incorporated crack HTPB (hydroxyl terminated polybutadiene propellant) propellant under strain control, fatigue tests with different strain amplitudes were carried out on the MTS fatigue testing machine. Four groups of specimens were set up in this test, namely one group with specimens and three groups with incorporated crack specimens with different angles (0°/45°/75°/ to the horizontal) of cracks. During the fatigue test, an infrared camera was used to monitor the temperature of the whole test piece in the whole process. The results show that at the same frequency, the increase of the strain amplitude will shorten the fatigue life. The fatigue life of the three incorporated crack specimens is similar reaching at 20000times, all in the same order of magnitude, and the fatigue life of the un-cracked specimen is larger reaching at 100000times, showing a cross-order phenomenon. In the fatigue test, the samples exhibit obvious strain hysteresis phenomenon and has significant viscoelastic material properties, in terms of the surface temperature monitoring of the specimens, the four groups of specimens all show a trend of temperature increase, and the final surface temperature and fatigue life are positive related. HTPB propellants strain control fatigue failure damage image Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Full Text Additional Declarations No competing interests reported. Tables are available in the Supplementary Files section. Supplementary Files Table.docx Cite Share Download PDF Status: Published Journal Publication published 14 Feb, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 06 Aug, 2024 Reviews received at journal 05 Aug, 2024 Reviewers agreed at journal 25 Jul, 2024 Reviewers agreed at journal 24 Jul, 2024 Reviewers agreed at journal 22 Jul, 2024 Reviews received at journal 22 Jul, 2024 Reviewers agreed at journal 22 Jul, 2024 Reviewers invited by journal 22 Jul, 2024 Editor assigned by journal 22 Jul, 2024 Editor invited by journal 17 Jul, 2024 Submission checks completed at journal 16 Jul, 2024 First submitted to journal 10 Jul, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4716827","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":337040702,"identity":"b95b3728-8df7-4383-9f8a-8b0906e7490e","order_by":0,"name":"Genfeng Li","email":"","orcid":"","institution":"Chongqing University of Arts and Sciences","correspondingAuthor":false,"prefix":"","firstName":"Genfeng","middleName":"","lastName":"Li","suffix":""},{"id":337040703,"identity":"280177d9-f7dd-4429-ae87-c2cc2e6854d9","order_by":1,"name":"Bo 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