COMPOSITE SANDWICH STRUCTURES – AN OVERVIEW

Mihai PARPARITA, Paul BERE, Katarzyna BIRUK-URBAN

Abstract


This paper gives a brief overview of composite Sandwich structures and some of their application fields. Sandwich composite structures combine laminated faces, also known as skins, with a light core in-between, thus combining the mechanical properties of the core and skins. High rigidity with a small addition to mass is obtained. The focus points of the paper are on structures used in automotive and aerospace applications. Specific constituent materials and architectures are studied. Mechanical properties of GFRP (Glass Fiber Reinforced Polymer) and CFRP (Carbon Fiber Reinforced Polymer) skins are studied, along with architectures and specific materials of the Sandwich core. Properties of different core types are evaluated (balsa wood cores, polyurethane foam cores and Nomex honeycomb type cores). The last part of the paper focuses on the manufacturing specifics of composite Sandwich structures and specific applications in the aerospace industry.


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