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Micromechanical Fatigue Visco-Damage Model for Short Glass Fiber Reinforced Polyamide-66

Communication avec acte
Auteur
DESPRINGRE, Nicolas
CHEMISKY, Yves
ROBERT, Gilles
242739 Solvay Engineering Plastics
ccMERAGHNI, Fodil
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

URI
http://hdl.handle.net/10985/10268
DOI
10.1002/9781119090427.ch48
Date
2015

Résumé

This work presents a micromechanical fatigue damage model developed for short glass fiber reinforced PA66. It has been developed to predict the high cycle fatigue behavior of PA66/GF30. The model is based on an extended Mori-Tanaka method which includes coated inclusions, matrix viscoelasticity and the evolution of micro-scale damage. The developed model accounts for the nonlinear matrix viscoelasticity and the reinforcement orientation. The description of the damage processes is based on the experimental investigation of damage mechanisms previously performed through in-situ SEM tests and X-ray micro-computed tomography observations. Damage chronologies have been proposed involving three different processes: interface debonding/coating, matrix micro-cracking and fiber breakages. Their occurrence strongly depends on the microstructure and the relative humidity. Each damage mechanism is introduced through an evolution law coupled to local stress fields. The developed model is implemented using a UMAT subroutine. Its experimental validation is achieved under stress or strain controlled fatigue tests.

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Nom:
LEM3_MEMA_2015_DESPRINGRE.pdf
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1.919Mo
Format:
PDF
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  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)

Documents liés

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

  • Multi-scale viscoelastic damage model of short glass fiber reinforced thermoplastics under fatigue loading 
    Communication avec acte
    DESPRINGRE, Nicolas; CHEMISKY, Yves; ARIF, Muhamad Fatikul; ROBERT, Gilles; ccMERAGHNI, Fodil (2014)
    This work presents a new micromechanical fatigue damage model for reinforced thermoplastic composites. The study aims at modeling high cycle fatigue damage of a short glass fiber reinforced polyamide-66. The developed ...
  • In situ SEM damage mechanisms investigation of short glass fiber reinforced polyamide composite 
    Communication avec acte
    ARIF, Muhamad Fatikul; DESPRINGRE, Nicolas; CHEMISKY, Yves; ROBERT, Gilles; ccMERAGHNI, Fodil (2013)
    Injection molded polyamide composite reinforced with short glass fibers has been widely used in automotive industry due to its high strength to weight ratio and the ability of injection process to produce complex parts. A ...
  • In situ damage mechanisms investigation of PA66/GF30 composite: Effect of relative humidity 
    Article dans une revue avec comité de lecture
    ARIF, Muhamad Fatikul; ccMERAGHNI, Fodil; CHEMISKY, Yves; DESPRINGRE, Nicolas; ROBERT, Gilles (Elsevier, 2014)
    Damage mechanisms of injection molded polyamide-66/short glass fiber 30 wt% composite (PA66/GF30) were analyzed using in situ SEM mechanical tests on specimens conditioned under three relative humidity contents (RH = 0%, ...
  • Fatigue damage in short glass fiber reinforced PA66: Micromechanical modeling and multiscale identification approach 
    Communication avec acte
    DESPRINGRE, Nicolas; CHEMISKY, Yves; ccMERAGHNI, Fodil; ccFITOUSSI, Joseph; ROBERT, Gilles (2015)
    The paper presents a new micromechanical high cycle fatigue visco-damage model for short glass fiber reinforced thermoplastic composites, namely: PA66/GF30. This material, extensively used for automotive applications, has ...
  • Multiscale fatigue damage characterization in short glass fiber reinforced polyamide-66 
    Article dans une revue avec comité de lecture
    ARIF, Muhamad Fatikul; CHEMISKY, Yves; ROBERT, Gilles; ccFITOUSSI, Joseph; ccMERAGHNI, Fodil; ccSAINTIER, Nicolas (Elsevier, 2014)
    This paper aims at studying fatigue damage behavior of injection molded 30 wt% short glass fiber reinforced polyamide-66 composite (PA66/GF30). The evolution of dynamic modulus, hysteresis area, cyclic creep and temperature ...

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