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    Rights statement: This is the author’s version of a work that was accepted for publication in MATERIALS TODAY COMMUNICATIONS. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in MATERIALS TODAY COMMUNICATIONS, 32, 2022 DOI: 10.1016/j.mtcomm.2022.103985

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Tailoring interfacial properties of 3D-printed continuous natural fiber reinforced polypropylene composites through parameter optimization using machine learning methods

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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  • R. Cai
  • W. Wen
  • K. Wang
  • Y. Peng
  • S. Ahzi
  • F. Chinesta
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Article number103985
<mark>Journal publication date</mark>31/08/2022
<mark>Journal</mark>MATERIALS TODAY COMMUNICATIONS
Volume32
Number of pages11
Publication StatusPublished
Early online date16/07/22
<mark>Original language</mark>English

Abstract

3D-printed continuous ramie fiber reinforced polypropylene composites (CRFRPP) are expected to ensure good mechanical properties while meeting the requirements of environmental friendliness and sustainability. To promote the wide industrial application of CRFRPP, this work investigated the effects of printing parameters (extrusion flow rate, printing temperature, layer thickness and printing speed) on the interfacial properties of CRFRPP. The interlayer and intralayer interfacial properties of CRFRPP with different printing parameters were studied using the design of experiment approach. Machine learning methods and response surface methodology prediction were also carried out based on the experimental results to bridge the printing parameters and interfacial properties. According to the prediction results, the printing parameters were optimized to improve the production efficiency while ensuring the desired interfacial performance. At last, the bending tests were conducted to investigate how the difference in interfacial properties can be translated to the mechanical performance. The results found that printed specimens with weak interfacial strength suffered interlaminar delamination failure when subjected to bending loads, greatly weakening the mechanical properties of the composites.

Bibliographic note

This is the author’s version of a work that was accepted for publication in MATERIALS TODAY COMMUNICATIONS. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in MATERIALS TODAY COMMUNICATIONS, 32, 2022 DOI: 10.1016/j.mtcomm.2022.103985