The combination of various groups of materials in function-optimised hybrid lightweight construction
requires the implementation of defined interface bonds, which must be consistent with the requirements
placed on strength, stiffness, corrosion, wear, ageing and other properties. IRD E will serve as a
cross-sectional research area in which fundamental change mechanisms and phenomena for the best possible
boundary layer bonding of FRP, polymer and metal systems will be investigated. Since excessive stresses
caused by both process-related and operational loads are induced in the boundary layer, the focus of the
research work will be on the realisation of high, interlaminar tensile and shear strengths. Therefore, an
appropriate interface design using chemical or mechanical surface modification, as well as the coating of
adhesion-supporting intermediate layers, must be developed. Moreover, punctual and two-dimensional joining
and contacting techniques require the equipping of functionalised surfaces of the plastic or FRP substrate
with electronic devices. Reliable, low-energy joining and contacting processes that result in high
mechanical and thermal joint strengths, as well as high-speed forming processes, are to be developed paying
special consideration to the processing temperature and handling. By means of materials selection, interface
compatibilisation and adjusted joining techniques, the coefficient of thermal expansion will be tailored. In
this way, residual stresses during processing and service time can be managed sufficiently.
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Figure: Multi-scale interface design and surface compatibilisation of hybrids,
Mechanically activated punctual or plane contacting in the in-line process
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Investigators:
Lang,
Roth,
Schubert,
Spange
Subprojects of the IRD E
| IRD E1 |
Interface optimisation of metal- and polymer-based manufacturing processes for load-compatible
hybrid components
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| IRD E2 |
Interface design for the integration of micro- and nanoelectronic systems into hybrid components
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