Behavior of composite sandwich laminates under Flexural Loading

摘要

The Mechanical behavior and overall performance of sandwich structures depends on the material properties of the constituents (facings, adhesive and core), geometric dimensions and type of loading. Sandwich construction is of particular interest and widely used, because the concept is very suitable and amenable to the development of lightweight structures with high in-plane and flexural stiffness. Sandwich panels typically consist of two thin face sheets (facings or skins) and a light weight thicker core. Sandwich composites are used for structures with low-weight, high stiffness and durability. This paper deals the study of flexural behavior of sandwich composite structures with two different orientations of skin and for two different core materials. The flexural strength and deflection of fabricated specimens were determined through standard three point bending test. A significant increase in flexural rigidity was observed with two different orientations of skin of the sandwich specimens. The experimental deformation results were compared with the theoretical and simulation results.