Experimentaland numerical investigation of buckling behaviors of laminated composites with delamination

Technology development is limited due to known materials that can not respond to the needs of developing technology over time. That is why scientists have been working on finding new materials, leading to the overcoming of the material-based limitations of technology for this purpose. Composite materials, which are frequently preferred from these newly found materials, have brought great innovations and advantages to design angles in recent years due to their low weight and high strength properties leading to major fields such as aviation, automotive sector. However, composite materials are exposed to deformation that depends onto external factors during period of use ,such as other building materials. One of these deformations is the type of deformation called delamination. In this experimental study with the aim of determining the structural effects of delamination, square, rectangular and circular geometries also used delamination plates with 3 different 315 mm2 delamination areas with equal area at the center of the plate. In addition, the critical buckling load was calculated by expanding the scope of the literature with [0]8, [90]8 and [-45 / +45]4 orientation angles and glass epoxy and aramid-epoxy composites. In this study, it has to obtain the values using by two boundary conditions that is clamped-clampedh and fixed-fixed as experimental and numerically. The obtained data are presented in the thesis and the effects of delamination have been analyzed on structure.