Static and Vibration Analysis of Aluminium and Carbon Hybrid Composite Plate

Abstract

Carbon Laminate Aluminium Reinforced Epoxy (CLARE) is another assortment of fiber metal overlays for cutting edge aviation basic applications and advance aerospace structure. It comprises of thin aluminium sheets reinforced together with unidirectional high-quality carbon fiber epoxy. CLARE overlays offer an interesting mix of properties, for example, remarkable exhaustion protection, high particular static properties, great effect protection, great remaining and limit indent quality, fire protection and erosion properties, CLARE covers can be custom-made to suit a wide assortment of utilizations by differing the fiber/pitch framework, the compound kind and thickness, stacking grouping, fiber introduction, surface pre-treatment procedure, and so on. The present work deal with the theoretical and experimental analysis of unidirectional CLARE sandwich plate.The first order classical plate laminated theory different boundary condition and equation are used to infer the condition of motion. using ANSYS APDL R15 calculate the natural frequency of CLARE composite plate by finite element method. fabrication method uses hand layup method to make a carbon fiber epoxy composite. then combining 3 layer ofAluminum sheet and 2 layer of carbon fiber epoxy.unidirectional carbon fiber epoxy first at 0 degree and second at 90 degrees. Aluminium and carbon fiber epoxy this two are joint by viscoelastic material (silicone gel) and make a sandwich plate. then after free and forced vibration analysis of plate find damping characteristic and natural frequency of CLARE sandwich plate. the Young’s modulus of composite plate is calculated experimentally from UTM. the experimentally calculated natural frequency are less as compare to the natural frequency calculated by ANSYS APDL R15.0 values. Because the reason is that there is bonding between the layers is not perfect, and thickness is not maintaining at the time of hand layup process and air gap also an important factor.Imperfect bonding increases the flexibility of the plate and hence there is decrease in the natural frequencies.