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Sandwich Structures Based on Sheet Molding Compounds for Aircraft Applications

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Sandwich Structures Based on Sheet Molding Compounds for Aircraft Applications

 

The demand for new aircraft is enormously high. More than 35,000 aircraft are expected by the two largest manufacturers of civil aircraft, Boeing and Airbus, to be produced between 2016 and 2035 which means almost 1,800 new aircraft per year. This requires a ramp up of the production. Especially the manufacturing technologies for sandwich structures with fiber reinforced plastics (FRP) as top layers are characterized by a high grade of manual work and comparatively long process cycle times. In order to enable an economical ramp up of future aircraft production, the development and introduction of new manufacturing processes is required. One promising technology to produce such components in a cost-efficient way is the Sheet Molding Compound (SMC) technology due to short curing times, the possibility of functional integration, such as inserts or wires and the opportunity to manufacture complex 3D shapes. Therefore, this paper deals with the development of sandwich structures based on SMC as top layers and rigid foam cores. Moreover, complex SMC sandwich structures are mechanically tested and their failure behavior is analyzed. Based on those results, the potentials for this sandwich SMC technology are presented, especially for the aircraft industry.

 

Authors: Martin Hentschel, Marc Fette, Nicole Stoess, Axel Herrmann, Jens Wulfsberg, and Ruben Czichos

 

Conference: SAMPE Seattle 2017

 

SKU/Code: SE17--0613

Pages: 12




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