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Microwave additive manufacturing of continuous carbon fibers reinforced thermoplastic composites: Characterization, analysis, and properties

Li, Nanya 1; Link, Guido 1; Jelonnek, John 1; Morais, Manuel V. C.; Henning, Frank
1 Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Traditional additive manufacturing (also known as 3D printing) of continuous carbon fiber reinforced plastic (CCFRP) lacks the ability to manufacture parts with high speed and energy efficiency. This is mainly because of the contact needed and the slow heat transfer from the conventional hotend to the composite filaments. A microwave heating assisted additive manufacturing method is here presented which allows manufacturing CCFRP with a higher speed as compared to conventional methods. The permittivity of printed specimens with different fiber volume fraction was investigated. By using the measured dielectric properties, a micro-scale microwave radiation and heat transfer model between the fiber and resin matrix has been established. The skin-core temperature difference of the moving CCFRP filaments during conventional thermal and microwave heating has been simulated to reveal the relationship between the temperature difference, filament diameter and printing speed. Non-isothermal crystallization behavior and mechanical strengths of thermal and microwave printed specimens have been studied, and the reasons for the different results have been analyzed.

Postprint §
DOI: 10.5445/IR/1000134259
Veröffentlicht am 22.05.2022
DOI: 10.1016/j.addma.2021.102035
Zitationen: 5
Web of Science
Zitationen: 4
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 08.2021
Sprache Englisch
Identifikator ISSN: 2214-8604, 2214-7810
KITopen-ID: 1000134259
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Erschienen in Additive Manufacturing
Verlag Elsevier
Band 44
Seiten Art.-Nr.: 102035
Vorab online veröffentlicht am 21.05.2021
Nachgewiesen in Dimensions
Web of Science
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