Risteska, Svetlana and Trajkovska Petkoska, Anka and Samak, Samoil and Drienovsky, Marian (2020) Annealing Effects on the Crystallinity of Carbon Fiber-Reinforced Polyetheretherketone and Polyohenylene Laminate Composites Manufactured by Laser Automatic Tape Placement. Materials Science (Medžiagotyra), 26 (3). ISSN 1392–1320
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Abstract
In situ consolidation of thermoplastic composites by Automated Tape Placement (ATP) is challenging. High quality ATP
grade pre-preg material and tape head equipped with an efficient heat sources like lasers offer an opportunity towards high
deposition rates and improved mechanical properties of composite materials. In this study uni-directional carbon fiber/
polyphenylene sulfide (UD tape prepreg CF/PPS), carbon fiber/polyetheretherketone (UD tape prepreg CF/PEEK) as well
as blend of carbon fiber/polyetheretherketone/polyphenylene sulfide (UD tapes prepregs CF/PEEK/PPS) laminates are
compared in terms of their properties after beeing processed by ATP technology. CF/PPS, CF/PEEK and blend
CF/PPS/PEEK laminate specimens were processed using in-situ laser-assisted ATP (LATP) process. LATP processing
parameters used in this study were chosen based on a preliminary trials; the results provide a basis for refinement of these
parameters and prepreg material with an optimal and balanced set of final mechanical properties. This study showed an
attempt how to manage the processing parameters for LATP process and to obtain composite materials with tailored
properties. The process for production of thermoplastic plates with LATP head in general is a process that is governed by
many parameters such as: laser power, angle of incidence, roller pressure and temperature, placement speed, tool
temperature, then types of the roller material and the tool material. These parameters are not subject of discussing in this
paper; they are kept constant, and the goal of the paper is to manage the crystallinity level within the composite
thermoplastic material during annealing step at different temperatures after LATP process. Also, the void content during
the production process could be controlled. More particularly, the authors showed that composites based on PPS matrix
manufactured with LATP process possess higher flexural strength, with less void content compared to samples based on
PEEK matrix. These samples showed also higher crystallinity after annealing step.
Keywords: thermoplasts, laser-assisted automated tape placement (LATP), degree of crystallinity, void content, flexural
strength.
| Item Type: | Article |
|---|---|
| Impact Factor Value: | 0.576 |
| Subjects: | Natural sciences > Chemical sciences Engineering and Technology > Materials engineering Engineering and Technology > Mechanical engineering Natural sciences > Other natural sciences |
| Divisions: | Faculty of Technology |
| Depositing User: | Svetlana Risteska |
| Date Deposited: | 15 Sep 2020 07:20 |
| Last Modified: | 15 Sep 2020 07:20 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/24437 |
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