Aluminum Panels
Introduction
A sandwich panel[1] is any structure or panel[2] made of three layers: a low-density core (PIR, mineral wool, XPS) and a thin skin layer bonded to each side.[3] Sandwich panels are used in applications where a combination of high structural rigidity and low weight is required.
The structural functionality of a sandwich panel is similar to the classic I-beam, where two face sheets primarily resist in-plane and lateral bending loads (similar to the flanges of an I-beam), while the core material primarily resists shear loads. (similar to the web of an I-beam).[4] The idea is to use a light/soft but thick layer for the core and strong but thin layers for the face sheets. This results in an increase in the overall thickness of the panel, often improving structural attributes, such as bending rigidity, and maintaining or even reducing weight.[5].
Sandwich panels are an example of a sandwich structured composite: the strength and lightness of this technology make it popular and widespread. Their versatility means that the panels have many applications and come in many forms: core and skin materials can vary widely and the core can be honeycomb or solid fill. The closed panels are called cassettes.
Applications
An obvious application is in aircraft, where mechanical performance and weight savings are essential. There are also transportation and automotive applications.[6].
In building and construction, these prefabricated products are designed for use as building envelopes. They appear in industrial and office buildings, in clean and cold rooms and also in private homes, whether rehabilitated or newly built. They combine a high quality product with great flexibility in terms of design. In general, they have good energy efficiency and sustainability.[7].
In packaging, applications include ribbed polypropylene panels and polypropylene honeycomb panels.[8].
Guys
3D printed biopolymer panels
Due to the ability of 3D printers to manufacture complex sandwich panels, there has recently been a flourishing of research in this area covering energy absorption,[9] natural fiber,[10] with continuous synthetic fibers,[11] and vibration.[12] The promise of this technology is for new geometric complexities in sandwich panels that are not possible with other manufacturing processes.