Mechanical and Physical Properties Investigations of Carbon Fiber Prepreg Composites Fabricated by the Out-of-Autoclave Method with Rapid Curing for Prosthetic Foot Applications

Mechanical and Physical Properties Investigations of Carbon Fiber Prepreg Composites Fabricated by the Out-of-Autoclave Method with Rapid Curing for Prosthetic Foot Applications | 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 Mechanical and Physical Properties Investigations of Carbon Fiber Prepreg Composites Fabricated by the Out-of-Autoclave Method with Rapid Curing for Prosthetic Foot Applications Rifky Ismail, Deni Fajar Fitriyana, Akmal Putra Fardinansyah, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9331394/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 11 You are reading this latest preprint version Abstract The use of carbon fiber prepreg composites offers a superior material solution, the efficiency of the production process using conventional methods is often constrained by very long curing times. Therefore, this study aims to analyze the effect of heating rate variations in the Rapid Curing (RC) method on the mechanical and physical properties of carbon fiber prepreg composites for prosthetic foot applications. The fabrication process was carried out using the Out-of-Autoclave (OoA) method with the Vacuum Bag Only (VBO) technique at heating rate variations of 1.5°C/min, 3°C/min, and 5°C/min. The fabricated specimens were evaluated through a series of mechanical tests, including tensile, bending, and impact tests, as well as physical tests consisting of density and porosity measurements. A heating rate of 3°C/min produced the best composite performance, evidenced by the lowest porosity, highest density, and improved tensile, flexural, and impact strengths compared to specimens prepared at other heating rates. Physical sciences/Engineering Physical sciences/Materials science Carbon Prepreg Out-of-Autoclave Rapid Curing Mechanical Properties Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 05 May, 2026 Reviews received at journal 04 May, 2026 Reviews received at journal 04 May, 2026 Reviewers agreed at journal 13 Apr, 2026 Reviewers agreed at journal 13 Apr, 2026 Reviewers agreed at journal 12 Apr, 2026 Reviewers invited by journal 10 Apr, 2026 Editor invited by journal 10 Apr, 2026 Editor assigned by journal 07 Apr, 2026 Submission checks completed at journal 07 Apr, 2026 First submitted to journal 06 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. 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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-9331394","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":623852414,"identity":"d07d4cf1-423e-463e-a71e-adf6dff1162b","order_by":0,"name":"Rifky Ismail","email":"","orcid":"","institution":"Diponegoro University","correspondingAuthor":false,"prefix":"","firstName":"Rifky","middleName":"","lastName":"Ismail","suffix":""},{"id":623852416,"identity":"202e414e-4283-482d-8666-4742eb201485","order_by":1,"name":"Deni Fajar Fitriyana","email":"","orcid":"","institution":"State University of 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