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Multiscale viscoplastic modeling of recycled glass fiber-reinforced thermoplastic composites: Experimental and numerical investigations

Nachtane, M.; Meraghni, F.; Chatzigeorgiou, G.; Harper, L.T.; Pelascini, F.

Authors

M. Nachtane

F. Meraghni

G. Chatzigeorgiou

LEE HARPER LEE.HARPER@NOTTINGHAM.AC.UK
Associate Professor - Composites Manufacturing

F. Pelascini



Abstract

One of the main challenges facing fiber-reinforced polymer composites is the lack of options for end-of-life recycling. The environmental impact of waste materials disposed of at landfill sites, by incineration, or by erratic dispersion in the environment is accelerating the need to find innovative solutions to increase the value of recycled materials. This research aims to investigate the relationship between microstructural parameters and the mechanical properties of a recycled thermoplastic composite material. The latter is processed by thermocompression molding of a polyamide (PA66) matrix reinforced with chopped glass strands. An innovative approach is proposed to link the local microstructure of the composite to the mechanical behavior of the recycled material. It exploits an experimental characterization of the material microstructure using optical microscopy and X-ray micro-computed tomography (mCT). The experimental findings are implemented into a numerical modeling strategy to mimic the flexural behavior, based on a micromechanical approach coupling mean and full-field analysis. The region of interest is reconstructed from detailed 3D images using a modified random sequential adsorption (MRSA) algorithm, while other regions are modeled as homogenized macro-scale continua. Furthermore, the abilities of the proposed approach are proven by incorporating the viscoplastic behavior of the random heterogeneous material induced by the polymer matrix. The originality of the present research consists of the multi-scale FE analysis and the experimental validation for the viscoplastic behavior of the recycled composite material, taking into account influences from the microstructure.

Citation

Nachtane, M., Meraghni, F., Chatzigeorgiou, G., Harper, L., & Pelascini, F. (2022). Multiscale viscoplastic modeling of recycled glass fiber-reinforced thermoplastic composites: Experimental and numerical investigations. Composites Part B: Engineering, 242, Article 110087. https://doi.org/10.1016/j.compositesb.2022.110087

Journal Article Type Article
Acceptance Date Jun 21, 2022
Online Publication Date Jun 28, 2022
Publication Date Aug 1, 2022
Deposit Date Jul 8, 2022
Publicly Available Date Jun 29, 2023
Journal Composites Part B: Engineering
Print ISSN 1359-8368
Electronic ISSN 1879-1069
Publisher Elsevier BV
Peer Reviewed Peer Reviewed
Volume 242
Article Number 110087
DOI https://doi.org/10.1016/j.compositesb.2022.110087
Keywords Industrial and Manufacturing Engineering; Mechanical Engineering; Mechanics of Materials; Ceramics and Composites
Public URL https://nottingham-repository.worktribe.com/output/8856485
Publisher URL https://www.sciencedirect.com/science/article/pii/S1359836822004632

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