Our work aims to analyze using the finite element method the evolution of the stress intensity factor (SIF) parameter K of three laminated folded plates stacks [+a,-a], made of the same epoxy matrix and different reinforcement fibers (boron, graphite and glass). Our results show that the angle of orientation of the boron/epoxy composite has no great influence on the
variation of the parameter KI. Compared to composite graphite/epoxy and glass/epoxy, the laminated composite boron/epoxy reduces more the SIF KI in the middle of the plate for angles 0 <= a <= 30.
Key Words
cracks; delamination; stress intensity factor; fibers orientations; finite element method and laminates
Address
Habib Achache : Department of Materials Engineering, University Dr Yahia Fares of Medea, Urban Pole - 26000 Medea, Algeria
Abdelouahab Benzerdjeb : Department of Mechanical Engineering University of Science and Technology Oran Mohammed Boudiaf (USTO), BP1505 El Menaouar, 31036 Oran, Algeria
Abdelkader Mehidi and Benali Boutabout : Laboratory of Mechanical and Physical of Materials (LMPM), University Djillali Liabes of Sidi Bel Abbes,
BP 89, Street Ben M\'Hidi, Sidi Bel Abbes, Algeria
Djamel Ouinas : Laboratory of Numerical and Experimental Modeling of Mechanical Phenomena, University of Mostaganem,
Route Belahcel 27000 Mostaganem, Algeria
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