Probabilistic analysis of the behavior of polymer matrix composite materials reinforced by different types of fibers

2017 International Conference on Building Materials and Materials Engineering

材料科学;土木建筑工程

Harb, N.^1,2 ; Bezzazi, B.^1,2 ; Mehraz, S.^1,3 ; Hamitouche, K.^1,2 ; Dilmi, H.^1,2

Research Unit Materials, Processes and Environment, University of Boumerdes, Algeria^1

Coating Laboratory, Materials and Environment, University of Boumerdes, Algeria^2

Research Center in Industrial Technologies CRTI, BP 64, Cheraga, Algiers

16033, Algeria^3

关键词: Carbon fiber laminate;    Long fiber composites;    Mechanical behavior;    Mechanical characteristics;    Morphological analysis;    Probabilistic analysis;    Stratified structure;    Thermosetting matrices;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/264/1/012021/pdf
DOI  :  10.1088/1757-899X/264/1/012021

来源: IOP

【 摘 要 】

The requests of lightening of the structures and gains in performance lead to search for new materials and the associated processes for aeronautical and space applications. Long-fiber composites have been used for many years for these applications; they make it possible to reduce the mass of the structures because of their excellent compromise of mass/rigidity / resistance. The materials in general contain defects which are essentially due to their nature and their mode of elaboration. To this purpuse, we carried out a probabilistic analysis of the mechanical behavior in three-point bending of composite materials with a thermosetting matrix in order to highlight the influence of the number of folds of the fibers and the nature of the fibers on the dispersion of the defects in the stratified structures fiberglass, carbon fiber laminates and hybrid (carbon / glass) laminates. From the results obtained, the dispersion of the defects is lower in the laminates of greater number of plies of the fibers and the hybrid laminates; the more the number of folds increases the more the mechanical characteristics increase; the hybrid laminates exhibit better mechanical properties compared to laminates of the same type of fiber. Finally, a morphological analysis of fracture structures and facies was investigated by scanning electron microscope (SEM) observations.