Experimental Analysis of Emissivity in Inconel 718 for Laser Metal Deposition Temperature Monitoring with Thermal Imaging

Experimental Analysis of Emissivity in Inconel 718 for Laser Metal Deposition Temperature Monitoring with Thermal Imaging | 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 Experimental Analysis of Emissivity in Inconel 718 for Laser Metal Deposition Temperature Monitoring with Thermal Imaging Jon Gabirondo-López, Telmo Echániz, Iñaki López-Ferreño, Jon Lambarri, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6259165/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 29 May, 2025 Read the published version in International Journal of Thermophysics → Version 1 posted 10 You are reading this latest preprint version Abstract This contribution investigates the emissivity of Inconel 718 in the context of laser metal deposition, focusing on the impact of surface finish variations resultant from additive manufacturing techniques and the challenges it poses when monitoring the process via thermal imaging. Our methodology involves examining the emissivity of Inconel 718 samples produced through laser metal deposition, with a particular focus on the Mid-Wave Infrared and Long-Wave Infrared spectral ranges, common in industrial-grade thermal cameras. We perform directional spectral measurements from 100 °C to 900 °C in a controlled atmosphere using a custom-made emissometer and analyze the differences between samples synthesized via casting and laser metal deposition. The data were also treated to obtain total hemispherical emissivity values and to compare them with the literature data. Finally, we perform a temperature calculation error analysis to clarify the conditions and emissivity input data under which infrared cameras should operate in these additive manufacturing processes. Inconel 718 infrared emissivity additive manufacturing temperature measurement radiative heat transfer Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 29 May, 2025 Read the published version in International Journal of Thermophysics → Version 1 posted Editorial decision: Revision requested 15 Apr, 2025 Reviews received at journal 15 Apr, 2025 Reviews received at journal 09 Apr, 2025 Reviewers agreed at journal 26 Mar, 2025 Reviewers agreed at journal 20 Mar, 2025 Reviewers agreed at journal 20 Mar, 2025 Reviewers invited by journal 19 Mar, 2025 Editor assigned by journal 19 Mar, 2025 Submission checks completed at journal 19 Mar, 2025 First submitted to journal 19 Mar, 2025 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. 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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-6259165","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":434465436,"identity":"db57e700-e4f5-472a-b47d-49ea0f0682dc","order_by":0,"name":"Jon Gabirondo-López","email":"","orcid":"","institution":"University of the Basque Country","correspondingAuthor":false,"prefix":"","firstName":"Jon","middleName":"","lastName":"Gabirondo-López","suffix":""},{"id":434465437,"identity":"8d3249d3-b53f-4a88-9ffc-434cd76f4507","order_by":1,"name":"Telmo 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