Fatigue and damage to composite structures.

      Аннотация: In this work, we studied fatigue fracture and crack in composite aircraft. In which we studied airfoil NACA 2412 made of glass fiber.First, in the experimental part, experiments were carried out on two laminate plates(carbon/glass) with 8 plies, the first one controlled by ultrasonicmethode non destructive testing techniques (NDT) to detect cracks and also determine the mechanical caract?rization. And other traction experience on both plates and have the results.Secondly , the simulation of airfoil NACA 2412 deduce displacement, deformation, stresses and strain ,7 modes shapes, and natural frequencies.

Ключевые слова: composite aircraft, Fatigue, Fracture, crack, NDT.ultrasonic.