Open AccessProfile structures for economical hybrid lightweight design
Author(s) -
David Wagner,
David Löpitz,
Marcus Knobloch,
Michaela GedanSmolka,
Katrin Schubert
Publication year - 2022
Publication title -
technologies for lightweight structures
Language(s) - English
Resource type - Journals
ISSN - 2512-4587
DOI - 10.21935/tls.v5i1.158
Subject(s) - pultrusion , fibre reinforced plastic , materials science , ductility (earth science) , composite material , coating , core (optical fiber) , glass fiber , bending , adhesive , structural engineering , layer (electronics) , engineering , creep
Especially in the transport sector, lightweight design with fiber reinforced plastics (FRP) is of major relevance due to CO2 reduction through mass saving [1]. In sectors like automotive, FRP are mainly used in secondary structures such as seat shells. In order to be able to operate effective FRP lightweight design in load-bearing structural components, pultruded hybrid profiles are to be established as a new tool for engineers. The profile components are characterized by a FRP base structure and a metallic core that increases the ductility. The manufacturing of the components with pultrusion ensures a large scale production. To guarantee a high covalent bond between the metal cores and the FRP, the inserts are provided by using a newly developed powder coating, which acts like a latent reactive adhesive [2]. Three different profile constructions have been verified, which are identical in the external cross-sectional shape and size, but differing in core structure. A glass-FRP-steel-combination was chosen as material and a pure FRP sample was used as a reference. The mechanical properties were investigated by using a 4-point bending test. Depending on the core structure, various failure behavior and mechanical parameters like energy absorption could be determined.