Statistical Assessment of the Laboratory Performance Achieved in Charpy Impact and Tensile Testing Scenarios: A Comprehensive Proficiency Testing Approach

Statistical Assessment of the Laboratory Performance Achieved in Charpy Impact and Tensile Testing Scenarios: A Comprehensive Proficiency Testing Approach | 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 Statistical Assessment of the Laboratory Performance Achieved in Charpy Impact and Tensile Testing Scenarios: A Comprehensive Proficiency Testing Approach Askarli Hasan, Csaba Hegedűs, Zsolt T. Kosztyán This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9462882/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 7 You are reading this latest preprint version Abstract In this study, measurement performance in mechanical testing of materials was examined by analyzing proficiency testing data within a statistical evaluation framework that was aligned with the requirements of related international standards. Six laboratories participated in two autonomous proficiency testing schemes that were performed under monitored and standardized test conditions, involving both absorbed impact energy and room-temperature tensile properties such as yield strength, ultimate tensile strength, and percentage elongation. Homogenized and stability-verified samples were used for the measurements to reduce the errors induced by material variations. Statistical tools and visualizations were used to reveal parameter-specific behavior differences, highlighting that some mechanical properties may not follow a Gaussian distribution. When supporting the effectiveness of proficiency testing programs in terms of laboratory competence, quantifying between-laboratory variability and identifying methodological factors that affect the reliability of measurements are important. A unified analytical framework that can support the improved harmonization of mechanical testing practices and strengthen the metrological and methodological reliability attained across different testing networks is also presented in this study. Charpy impact test proficiency testing interlaboratory comparison tensile testing laboratory performance evaluation z score analysis mechanical testing variability Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 18 May, 2026 Reviewers agreed at journal 09 May, 2026 Reviewers invited by journal 04 May, 2026 Editor assigned by journal 04 May, 2026 Editor invited by journal 04 May, 2026 Submission checks completed at journal 30 Apr, 2026 First submitted to journal 30 Apr, 2026 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-9462882","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":637467313,"identity":"007bd497-710a-47a2-ae5b-0104da67a7f7","order_by":0,"name":"Askarli Hasan","email":"","orcid":"","institution":"University of Pannonia","correspondingAuthor":false,"prefix":"","firstName":"Askarli","middleName":"","lastName":"Hasan","suffix":""},{"id":637467314,"identity":"b53b90d8-c7b9-4866-b94f-4e90260a980a","order_by":1,"name":"Csaba Hegedűs","email":"","orcid":"","institution":"University of Pannonia","correspondingAuthor":false,"prefix":"","firstName":"Csaba","middleName":"","lastName":"Hegedűs","suffix":""},{"id":637467318,"identity":"e096f8ff-422e-4b78-afa2-f1f3a0f032ca","order_by":2,"name":"Zsolt T. 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