Standardised joining technology for fibre reinforced polymers and steel (FAUSST) [IGF 18785 BG]

Responsible research centres: SLV Mecklenburg-Vorpommern (Mr. Hoffmann),  Center of Maritime Technologies e.V. (Dr. Roland)

Time period: 01.02.2016 bis 30.04.2018

Motivation / Background

Fibre reinforced polymers (FRP) are used in different fields (e.g. transport, infrastructure) due to their high ratio between mechanical properties and density. These materials have the potential to lead to a reduction of the dead weight or an improvement of the dead weight to payload ratio within the ship building industry. In addition the use of lightweight materials leads to more resource-conserving operation and innovative design solutions. FRP can be used in the field of wall covers, interior elements but also in terms of load carrying structural elements or as parts of the ship structure.

The future is therefore a material mixture between FRP and steel. For many applications within the ship and offshore industry steel is and will be the optimal material due to cost, manufacturing and certification issues but can be replaced by FRP in possible cases to reduce weight or allow special designs.

Currently no standardised joining technology exists for FRP-steel-joints for the ship building industry. For the manufacturing process up to now individually tailored solutions are developed, e.g. adhesive bonding or bolting, which require a time and cost intensive case-by-case certification review process.


Summary of planned objectives and results

The aim of the project FAUSST is to develop a standardised load carrying joint between steel and FRP. FAUSST is designed in a way that one side can be welded to a steel construction and the other side can be joined with FRPs, e.g. using a co-curing procedure.

The mechanical properties of the FAUSST connection are going to be, both experimentally and analytically, characterised for different application scenarios with the aim to obtain a FAUSST joining portfolio for different loading scenarios. The corresponding process parameters are going to be identified and quantified. In collaboration with the classification societies it is aimed to get ”approval in principle” for the joining portfolio.

The results can be used by SMEs in different sectors, where a material mixture of FRPs and steel is used. In addition the results can be potentially transferred to other metals.


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