The application of low-frequency acoustic methods for nondestructive testing has a very long history, probably originating with a simple tap technique. These techniques have been successfully applied to a variety of materials and are widely used for the assessment of the quality of bonded sheet metals. They have also proved useful in the NDE of composite materials, particularly honeycomb panels...

This projects attempts to simulate accurately the thermal conductivity of honeycomb panels in the normal direction. Due to the large empty space of the honeycomb core, the thermal radiation mode of heat transfer was modeled along with conduction. Using Newton’s Method to solve for a steady state model of heat moving through the honeycomb panel, the theoretical effective thermal conduction of th...

Abstract In the process of flight, penetration caused by bird strikes will cause a significant decrease in bearing capacity material, or even complete loss, which lead to accident aircraft. Therefore, it is great significance study mechanical properties aluminum honeycomb sandwich panels at different angles high-speed impact. this paper, finite element software used numerically analyze process....

In this study static and fatigue behaviours of honeycomb sandwich composites, made of aramide fibres and aluminium cores, are investigated through four-point bending tests. Damage and failure modes are reported and discussed. Global and local parameters were considered to evaluate the fatigue life of the analysed sandwich composites. Effects of core densities and the cell orientation (L or W) o...

The use of recycled and renewable components in structural applications supports the development sustainable lightweight structures. Disposed bottle caps can be used to generate eco-friendly honeycomb cores, especially when combined with other components. A natural fibre-based laminate represents an alternative synthetic fibres, matrices, metals skins for sandwich panels. This study evaluates f...

Although sandwich panels are widely used in the industry, limitations cores’ structure designs and materials restrain their use stiffness- or strength-critical applications without increasing beams’ dimensions. The of additive manufacturing over conventional fabrication methods enabled us to tune design according stiffness strength requirements overall Seven core structures were 3D printed Nylo...

This work focuses on the rapid determination of Acoustic Emission (AE) wave propagation velocity in composite laminate and sandwich structures using a closed-form formula. Firstly, classical model proposed literature is extended to determine acoustic any direction or structure; then corrective factor has been defined improve calculation accuracy; finally, parameter, called correlation ratio int...