Fatigue and Failure Analysis of Sandwich Composites using Two Types of Cross-Ply Glass Fibers Laminates and Epoxy Resin

Sandwich structures have become effective structural elements for engineering applications due to their good design flexibility. Understanding the material behavior under static and dynamic loads, as well failure mechanisms of these sandwich structures, is great importance. This work evaluates fatigue bending epoxy resin specimens composites composed an core with glass fiber laminated faces. The life, modes, stiffness degradation are determined experimentally. were cycled constant amplitude monitored by a data acquisition system that allowed continuous collection. Three stages identified using microscope analyses curves. In case imposed displacement 2 mm, shown significantly lower life than specimens.