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Effect of the measurement contact scale on the thermomechanical characterization of biocomposite surfaces

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

URI
http://hdl.handle.net/10985/24841
DOI
10.1088/2051-672x/acc046
Date
2023-03-10
Journal
Surface Topography: Metrology and Properties

Résumé

This paper proposes a multiscale surface characterization of biocomposites using the nanoindentation technique to identify the functional relationship between the measurement contact scale and the thermomechanical response of each biocomposite component, typically natural plant fibers and the polymer matrix. Flax fiber reinforced polypropylene composites are considered in this investigation. The measurement contact scale in nanoindentation is monitored by the tip indenter radius that ranges from ∼ 10 nm to ∼ 400 nm using different nanoindentation devices (AFM and commercial triboindenters). The thermal contribution is considered by heating the samples during the nanoindentation experiments. Finally, the outputs from multiscale nanoindentation experiments are confronted with the thermomechanical properties reported in the literature with conventional tensile tests as a reference. The results of this paper show the fundamental importance of considering contact scale measurement when characterizing the mechanical properties of biocomposites. Indeed, flax fibers are highly affected by the geometrical contact scale of indentation, while polypropylene does not show a significant dependence on the contact scale. On the other side, flax fibers show a specific multiscale thermomechanical behavior that is related to their hygrometric properties.

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  • Laboratoire Mechanics, Surfaces and Materials Processing (MSMP)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • 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)
    This paper aims to explore the thermal influence on the micro-tribo-mechanical behavior of natural fiber composites. Nanoindentation and scratch-test are used to characterize flax fibers reinforced polypropylene (PP) ...
  • 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)
    Recently, natural fiber reinforced plastic (NFRP) materials are becoming a viable alternative to synthetic fiber in many industrial applications which not require high structural performances. However, machining of NFRP ...
  • Wear under brittle removal regime of an under-expanded cryogenic nitrogen jet machining of bio-composites 
    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 ...
  • Cutting behavior of flax fibers as reinforcement of biocomposite structures involving multiscale hygrometric shear 
    Article dans une revue avec comité de lecture
    ccCHEGDANI, Faissal; CHEBBI, Amen-Allah; ccEL MANSORI, Mohamed (2021-04)
    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 ...
  • Numerical Modeling of the Machining Behavior of Natural Fiber Composites 
    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 ...

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