Development of Honeycomb Sandwich Structure for Aeronautical Flooring Components | Original Article

ABSTRACT:

The sandwich structure consists of a core which holds the facing skins apart from one another. The core resists the shear loads, due to this, stiffness of the structure increases. Sandwich component is joined by adhesive which allows it to act as one unit with high torsional and bending rigidity. Nowadays, honeycomb sandwich structures are becoming more popular due to their applications in various industries like aerospace, marine, automotive, construction, because they possess properties such as high strength to weight ratio, light in weight and high energy absorbing capacity. Aim of this paper is to focus on properties, materials, manufacturing methods, and theoretical analysis of sandwich structure. This paper gives overview of honeycomb sandwich structure, its manufacturing, load distribution, deflection, and bending and shear stiffness. Paper focuses on the bending stiffness, shear stiffness and deflections of honeycomb sandwich panel made up of aluminium alloys with different core thickness and varying thickness of upper and lower plate. The different failure modes of honeycomb panel under bending tests of honeycomb sandwich panel are explained. FEA analysis shows when the load is applied the stress distribution on upper skin is higher than core and lower skin, the failure mechanism of structure is upper skin cracking or debonding between skins and core.