{"id":5983,"date":"2026-01-12T09:37:09","date_gmt":"2026-01-12T14:37:09","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=5983"},"modified":"2026-01-12T09:40:04","modified_gmt":"2026-01-12T14:40:04","slug":"high-performance-and-geometrically-complex-parts-via-co-extrusion-additive-manufacturing-of-multi-scale-continuous-carbon-fiber-reinforced-thermoplastic-composites","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/high-performance-and-geometrically-complex-parts-via-co-extrusion-additive-manufacturing-of-multi-scale-continuous-carbon-fiber-reinforced-thermoplastic-composites\/","title":{"rendered":"High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites"},"content":{"rendered":"<p><em>Verville, M.; Therriault, D. (2026). High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites. Composites Part B\u00a0: Engineering, vol. 310, 2026, 113179.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Continuous Fiber-Reinforced Polymer Additive Manufacturing (CFRP-AM) often aims to significantly improve the mechanical properties of 3D printed parts. In this paper, we develop a CFRP-AM infrastructure able to print continuous carbon fiber-reinforced polylactic acid (PLA-SCCF) via co-extrusion (i.e., extrusion-based\u00a0<em>in-situ<\/em>\u00a0combination of the thermoplastic matrix and the continuous fibers reinforcement). This infrastructure uses a 6-axis robot to move a co-extrusion printhead over a heated printing bed, and is controlled using a custom-made slicing process. A curved thin-walled vase and a multi-material sandwich panel are made in a single manufacturing step to demonstrate the capabilities of the proposed infrastructure. Their geometrical fidelity is measured and their deviations from the reference model are both\u00a0&lt; 1%. Micro-computerized tomography scans (\u00b5CT) are performed to evaluate the micro and meso-structure of printed composite flat beams. Continuous fibers represent\u00a0~44 vol.% (~58 wt.%) of the composite while voids and porosities represent 0.4 vol.% and 7.9 vol.%, respectively. The ultimate tensile strength (UTS) and stiffness along the principal direction (E<sub>1<\/sub>) are tested for unidirectional flat beams and measured at 854 MPa and 29.5 GPa, representing 16\u00a0and 6.4X\u00a0increases when compared to a part reinforced with\u00a0~3.4 vol.% (~4.5 wt.%) short carbon fibers only, of an average aspect ratio of\u00a0~21. The developed co-extrusion CFRP-AM infrastructure could find applications in load-bearing applications where complex part geometries are a requirement, such as the automotive and aerospace industries.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1359836825010959\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Verville, M.; Therriault, D. (2026). High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites. Composites Part B\u00a0: Engineering, vol. 310, 2026, 113179. &nbsp; [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-5983","post","type-post","status-publish","format-standard","hentry","category-publications-academiques-quebecoises"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cqfa.quebec\/en\/high-performance-and-geometrically-complex-parts-via-co-extrusion-additive-manufacturing-of-multi-scale-continuous-carbon-fiber-reinforced-thermoplastic-composites\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Verville, M.; Therriault, D. (2026). High-performance and geometrically complex parts via co-extrusion additive manufacturing of multi-scale continuous carbon fiber-reinforced thermoplastic composites. 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