Sandwich panels – hard on the outside and soft inside
September 28th, 2009 | By Angela in Aerospace Industry, Automotive Industry, Composite production, Exhibitors, Innovation | 3 Comments »
Whether recreational craft, aircraft components such as the fuselage and wing shells, railway trucks, surfboards, rotor blades for wind power plants or superstructures of commercial vehicles or caravans, without sandwich structures the most important applications of composites would be inconceivable. A sandwich structure is a type of lightweight construction, in which the components consist of force absorbing covering layers that are kept at a distance by a relatively soft, normally light, core material.
The sandwich structure is a production process for semi-finished goods, in which several layers with diverse characteristics are embedded in a material. Almost always, this involves the use of diverse composites, since despite being of a low weight these components are very rigid. They are computed according to the linear sandwich theory. The core material preferably consists of paper honeycombs, foam materials or balsa wood. It transmits arising shear loads and supports the covering layers. The thermally insulating and acoustic insulating properties of the very light core materials are also frequently utilized.
Optiplan GmbH from Oelsnitz is one of the leading manufacturers of glass fibre reinforced plastics as panels and reels under the Polydet brand. Apart from the main application as high-grade wall coverings on vehicle superstuctures, GRP products are also used in the technical, industrial and construction sectors. The company will present its latest products at the Composites Europe trade fair, which takes place in Stuttgart from 27 to 29 October 2009.
Very light, very sturdy and very expensive. The characteristics of carbon fibres can be briefly described in this way. Consequently, their applications were primarily restricted in the past to aircraft and aerospace as well as to sports equipment. In addition, the so-called monocoque and other components of Formula 1 racing cars are produced using a carbon fibre reinforced plastic. Very large CRP components are employed in the wings and hull of aircraft.
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