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
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 shown 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 Young’s modulus of the fibers has an important influence on the shear strength
of the fiber/matrix interface of composite materials.