Investigation by a Genetic Algorithm of the Effect of Moisture Diffusion on the Fiber Matrix Interface Damage of Graphite/Epoxy Nanocomposite

Background:: The composite materials are more efficient and more resistant compared to so-called traditional materials. The application of continuous and variable forces modifies the properties of the materials, and generates the formation of cracks which lead to the rupture of structures. Objective:: The objective of this work is to study the reliability and the origin of the resistance of each fiber-matrix interface of the two hybrid composite materials studied. Methods:: In this study, the genetic algorithm is based on Weibull's probabilistic approach to calculate the damage to the interface and also on the Cox model to find and initialize the different values used in simulation model. Results:: The results obtained, by genetic modeling, have showed that the hybrid Carbon High Modulus (HM) / Basalt / Polyester composite is the most resistant to the mechanical stresses applied comparing with that of Carbon High Strength (HS) / Basalt / Polyester, these results were confirmed by the level of damage to the interface found for the two materials studied, and that the interface shear damage of the hybrid Carbon HM / Basalt / Polyester composite is much lower by 13% compared to that of Carbon HS / Basalt / Polyester. Conclusion:: The calculations are in good agreement with the analytical results of Cox, where he demonstrated that the Young's modulus of the fibers has an important influence on the shear strength of the fiber / matrix interface of composite materials.

Download Full-text

EVALUATION BY GENETIC ALGORITHM OF THE DAMAGE TO THE FIBER MATRIX INTERFACE OF COMPOSITE MATERIALS, LOCATED BY THE NONLINEAR ACOUSTIC TECHNICAL

International Journal of Materials Engineering and Technology ◽

10.17654/ijmetapr2015_233_243 ◽

2015 ◽

Vol 13 (2) ◽

pp. 233-243

Author(s):

A. Mokaddem ◽

B. Doumi ◽

N. Beldjoudi ◽

M. Alami ◽

A. Boutaous

Keyword(s):

Genetic Algorithm ◽

Composite Materials ◽

Matrix Interface ◽

Nonlinear Acoustic ◽

Fiber Matrix Interface ◽

Fiber Matrix

Download Full-text

Using Genetic Algorithms to study the Effect of Cellulose Fibers Ratio on the Fiber-Matrix Interface Damage of Biocomposite Materials

Current Materials Science ◽

10.2174/1874464812666190408144801 ◽

2019 ◽

Vol 12 (1) ◽

pp. 83-90 ◽

Cited By ~ 1

Author(s):

Khadidja Atig ◽

Allel Mokaddem ◽

Mohamed Meskine ◽

Bendouma Doumi ◽

Mohammed Belkheir ◽

...

Keyword(s):

Probabilistic Models ◽

Cox Model ◽

Cellulose Fibers ◽

Unidirectional Composite ◽

Matrix Interface ◽

Interface Damage ◽

Genetic Modeling ◽

The Matrix ◽

Fiber Matrix Interface ◽

Fiber Matrix

Background:In this article, we have studied the effect of cellulose fibers ratio on the fiber matrix interface damage of biocomposite materials based on a Polypropylene (PP) matrix.Methods:Few patents on the effect of cellulose fibers ratio on the fiber-matrix interface damage of biocomposite materials were published. We have investigated this damage, using a metaheuristic simulation based on the two Weibull probabilistic models which successively described the damage of the fiber and the matrix, our objective function is presented by the Cox model.Results:The results of our genetic modeling confirm that the level of damage is related to the mechanical stresses applied to the five studied materials Cotton-Polypropylene, Jute-Polypropylene, Flax- Polypropylene, Ramie-Polypropylene and Aramid-Polypropylene. Our genetic modeling indicates that the rate of cellulose in each fiber has a significant influence on the progressive degradation of the interface. The numerical simulation compared to the result obtained by genetic algorithm for the Aramid- Polypropylene composite shows that the level of degradation of the interface is greater compared to other biocomposite materials and that Cotton-Polypropylene has a very low interface damage compared to other biocomposites (82.5% cellulose).Conclusion:It can thus be said that the model correctly took into account the degradation phenomenon of a unidirectional composite and biocomposite and our calculations coincide perfectly with the conclusions of Antoine et al. who determined that the rate of cellulose in each fiber participates in the improvement of the mechanical properties of biocomposite materials.

Download Full-text