Finite Aluminium Graphite Titanium Triple Layered Composite Sheet for Aeronautic Application

Preparation of translaminar aluminium graphite titanium triple layered composite sheet was studied. A parametric investigation of synthesizing sheet without stresses in a composite delamination modelling has been considered. The triple layered metal sheet was prepared by two methods. By electro less chemical reduction of aluminium and titanium solutions or by hot pressing of aluminium thin plate to a flake graphite polymer composite coated with adhesive. A thin sheet of ≈ 0.5 mm in thickness structured of flake crystalline graphite polymer sheet punched with 1 mm diameter holes. It was inserted in a sac made of a semipermeable membrane. The assembly was placed in an electrolyzing cell filled with an ascorbic acid solution. At the beginning of the experiment, aluminium and titanium ions separately diffuse across the membrane towards the graphite plate surface that is soaking in the ascorbic acid solution. Ascorbic acid reduces the diffusing ions to give free metal nanoparticles that deposit on the graphite surface. After about 6 hours, a sandwich of Al-graphite titanium plate was obtained. The sheet was dried at 80°C for 2 hours and hot pressed under 150 KPa. It was annealed at 550°C for a few minutes. Results revealed that a triple sheet having variant thickness was prepared after ≥ 250 min of diffusion. Temperature help enhancing the rate of diffusion but deteriorates the physicomechanical properties of the prepared sheet.