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Cutting behavior of flax fibers as reinforcement of biocomposite structures involving multiscale hygrometric shear

Article dans une revue avec comité de lecture
Auteur
ccCHEGDANI, Faissal
CHEBBI, Amen-Allah
ccEL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
301080 Texas A&M University [College Station]

URI
http://hdl.handle.net/10985/23463
DOI
10.1016/j.compositesb.2021.108660
Date
2021-04
Journal
Composites Part B: Engineering

Résumé

This paper aims to investigate the effect of water absorption on the cutting behavior of biocomposites using flax fiber reinforced polylactic-acid (PLA) and the orthogonal cutting process. Different immersion times have been considered from 1 to 150 days in order to investigate both transient and saturated hygrometric regimes. Machining forces are measured during the cutting process and the machined surfaces are analyzed using a scanning electron microscope and an optical interferometer. The in-situ removed chip morphologies are captured by a high-speed camera. Results show a functional relationship between the multiscale hygro-mechanical properties of flax fiber composites and their shear mechanisms that are controlled by the water content. The water uptake modifies the cellulosic structure of natural flax fibers in the transient regime and damages the fiber/matrix interfaces in the saturated regime, which affects considerably the cutting mechanisms and the machinability of the biocomposite structure at different scale levels.

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  • Laboratoire Mechanics, Surfaces and Materials Processing (MSMP)

Documents liés

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  • Thermal effect on the tribo-mechanical behavior of natural fiber composites at micro-scale 
    Article dans une revue avec comité de lecture
    BUKKAPATNAM, Satish T.S.; EL AMRI, Iskander; ccEL MANSORI, Mohamed; ccCHEGDANI, Faissal (Elsevier, 2019)
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  • Fiber type effect on tribological behavior when cutting natural fiber reinforced plastics 
    Article dans une revue avec comité de lecture
    MEZGHANI, Sabeur; ccEL MANSORI, Mohamed; ccCHEGDANI, Faissal (Elsevier, 2015)
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    Article dans une revue avec comité de lecture
    LAVOREL, Floriane; TAZIBT, Abdel; ccEL MANSORI, Mohamed; ccCHEGDANI, Faissal (Elsevier BV, 2021-07)
    Machining of biocomposites using traditional techniques has shown some limitations due to the multiscale complex cellulosic structure of natural fibrous reinforcement. This paper aims to demonstrate the feasibility of the ...
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    Chapitre d'ouvrage scientifique
    ccEL MANSORI, Mohamed; ccCHEGDANI, Faissal (Elsevier, 2021)
    This article presents a 2D micromechanical model developed to predict the machining behavior of natural fiber composites using the finite element (FE) method. Natural fibers are modeled using an elasto-plastic behavior and ...
  • Multiscale Machinability Analysis of Natural Fiber Composites 
    Chapitre d'ouvrage scientifique
    ccCHEGDANI, Faissal; ccEL MANSORI, Mohamed (Elsevier, 2021)
    Machinability qualification of natural fiber composites requires a specific approach that involves the multiscale structure of natural fibers. This article addresses the machining qualification issues for natural fiber ...

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