Applicability of fatigue design recommendations for thin plate welded joints by assessment of fatigue crack initiation and propagation life

Applicability of fatigue design recommendations for thin plate welded joints by assessment of fatigue crack initiation and propagation life | 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 Research Article Applicability of fatigue design recommendations for thin plate welded joints by assessment of fatigue crack initiation and propagation life Sohei Kanna, Masahiro Takanashi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4513065/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract Fatigue design guidelines for welded joints are primarily based on tests of around 10mm thick joints. Fatigue strength generally decreases with increased thickness, likely due to increased stress concentration or changes in stress distribution. Thus, guidelines correct and reduce the fatigue strength of thicker joints. However, for thinner plates commonly used in railway cars, there is limited test data and it is unclear if the guidelines apply. This study conducted a 4-point bending fatigue test on a 3mm thick fillet welded joint to determine fatigue strength. Contrary to expectations, fatigue strength decreased when thickness reduced from 9mm to 3mm. However, test results showed higher fatigue strength than the recommended value, confirming that the guidelines can apply to 3mm thickness. Additionally, the study investigated the reduced fatigue strength of thin plates using the relationship between the number of cycles to crack initiation, local stress range, and crack growth analysis based on Paris' law. It found that as thickness decreases, the stress concentration at the weld toe decreases and the number of cycles to crack initiation increases. However, the ligament also shrinks, resulting in a shorter crack propagation life. Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 22 Jul, 2024 Reviewers invited by journal 22 Jul, 2024 Editor invited by journal 18 Jul, 2024 Editor assigned by journal 05 Jun, 2024 First submitted to journal 04 Jun, 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. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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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-4513065","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":330001453,"identity":"032da0aa-2e0e-444b-bb67-da6c6a84bbf2","order_by":0,"name":"Sohei Kanna","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2UlEQVRIiWNgGAWjYBACCRDB+OefnDx7YxtDAvFaGg4YG/YcJFFLIsONBDbiHCbZfvbYg5877iQwznzc9uABQy0Df3s3fsukefLSDXvPPMtjl05sN0hgOM4gcebsBrxa5BhyzCR42JiLGWcntkkk/jvGYCCRS0AL/xszyT9szIkNNw+2SSQwEKFFWiLHTJq37XBiww1GkJYawlokZ7wxk5Y5kwYM5ESQlgM8BP0icT7HTPJNhQ0wKo8/k/zBUCfH396LXws6OMxDknIQqCNZxygYBaNgFAx/AACXqUcxGadtPQAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-6722-6122","institution":"IHI Corporation","correspondingAuthor":true,"prefix":"","firstName":"Sohei","middleName":"","lastName":"Kanna","suffix":""},{"id":330001454,"identity":"e39c5fb8-a93e-4228-bd38-f64e65c8c47c","order_by":1,"name":"Masahiro Takanashi","email":"","orcid":"","institution":"IHI Corporation","correspondingAuthor":false,"prefix":"","firstName":"Masahiro","middleName":"","lastName":"Takanashi","suffix":""}],"badges":[],"createdAt":"2024-06-01 10:00:02","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4513065/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4513065/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":62556813,"identity":"043b3892-d462-4a38-bb48-17ebdc511dda","added_by":"auto","created_at":"2024-08-15 19:45:39","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1098826,"visible":true,"origin":"","legend":"","description":"","filename":"20240601Manuscriptrev1.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4513065/v1_covered_995d5a1a-ce34-4c33-87ed-8f13a943dd08.pdf"}],"financialInterests":"","formattedTitle":"Applicability of fatigue design recommendations for thin plate welded joints by assessment of fatigue crack initiation and propagation life","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":true,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"welding-in-the-world","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"witw","sideBox":"Learn more about [Welding in the World](https://www.springer.com/journal/40194)","snPcode":"40194","submissionUrl":"https://www.editorialmanager.com/witw/","title":"Welding in the World","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-4513065/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4513065/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eFatigue design guidelines for welded joints are primarily based on tests of around 10mm thick joints. 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