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An investigation of in-situ AFP process parameters using CF/LM-PAEK

Schiel, Ines and Raps, Lukas and Chadwick, Ashley R. and Schmidt, Isabelle and Simone, Manuel and Nowotny, Sebastian (2020) An investigation of in-situ AFP process parameters using CF/LM-PAEK. Advanced Manufacturing: Polymer and Composites Science, pp. 1-7. Taylor & Francis. doi: 10.1080/20550340.2020.1826772. ISSN 2055-0340.

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Official URL: http://dx.doi.org/10.1080/20550340.2020.1826772


In recent years the use of thermoplastics has become popular in aerospace applications, with a primary focus on fiber-reinforced composites. Displaying greatly improved mechanical properties, new components using these materials still need to be characterized and their suitability for aviation applications demonstrated. A common restriction to the implementation of fiber-reinforced thermoplastic parts is the almost default autoclave manufacturing, which is both time consuming and expensive. Aiming for a more economical final product, this study utilizes a one-step in-situ Automated Fiber Placement (AFP) process to produce samples for mechanical and thermal characterization. The recently developed and highly popular material CF/LM-PAEK was used within this study, with the four major AFP processing parameters varied to assess material sensitivity. Test samples were manufactured using Design of Experiment (DoE). Subsequently, single lap shear (SLS) and differential scanning calorimetry (DSC) tests were performed to assess consolidation quality. With rising tooling temperature, both SLS strength and crystallinity increase up to 31 MPa and 25%, respectively. A post-manufacturing tempering process improved crystallinity of the tested CF/LMPAEK specimens up to 29% and SLS strength up to 38 MPa. Within the tested parameter range, speed, which is a promising aspect with regard to faster industrial production.

Item URL in elib:https://elib.dlr.de/136568/
Document Type:Article
Title:An investigation of in-situ AFP process parameters using CF/LM-PAEK
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schiel, InesInes.Schiel (at) dlr.deUNSPECIFIED
Raps, LukasLukas.Raps (at) dlr.deUNSPECIFIED
Nowotny, SebastianSebastian.Nowotny (at) dlr.deUNSPECIFIED
Date:8 October 2020
Journal or Publication Title:Advanced Manufacturing: Polymer and Composites Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1080/20550340.2020.1826772
Page Range:pp. 1-7
Publisher:Taylor & Francis
Keywords:Automated placement technologies; in-situ manufacturing; automated fiber placement (AFP); differential scanning calorimetry (DSC); single lap shear (SLS) test; CF/LM-PAEK
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Design and Manufacture Technologies
Deposited By: Schiel, Ines
Deposited On:16 Oct 2020 11:34
Last Modified:20 Jun 2021 15:54

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