Page 27 - ILK Research Report 2020

SFB/TRR 285 A03 – Material Phenomenology

Calculation and evaluation of process-induced material structure
phenomena in FRP-metal connections

Fibre-reinforced plastic (FRP) composites with thermoplastic matrix enable the Period
production of lightweight structures within very short cycle times. By exploiting 01.07.2019 – 30.06.2023
the specific material properties, such as hot formability and anisotropy, joints of
dissimilar joining partners with novel assembly interfaces can be realised. The Project Director
joining processes are accompanied by local changes in the material structure. Prof. Dr.-Ing. habil. Maik Gude

Within the scope of the project, a simulation chain from the joining process Contact Person
to the evaluation of FRP/metal joints is being developed. For this purpose, Dr. Andreas Hornig
an approach is being developed that allows the influence of process-related Benjamin Gröger
processes on the microscopic material structure to be taken into account.
Phase I focuses on the process-related fibre deformations on the microscale. Funding
The different displacement behaviour of fibres and matrix in newly developed German Research Foundation (DFG)
test environments will be investigated. The phenomenological understanding
during a joining process is built up by simplified test environments and the
FRP is evaluated by means of imaging methods.

The results are the basis for the numerical analyses that predict the material
structure during the formation of a joint in the further course of the project.

Investigation of fibre deformation under shear stress of the molten thermoplastic matrix:
a) initial state, b) after shearing

Fluid-structure interaction studies for the prediction of fibre displacement behaviour
using the example of a large number of flexible structures in a fluid stream

Funded by

German Research Foundation

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