Project-CO3

Scientific
publications 
and theses

Surface functionalization of thermoset composite for infrared hybrid welding

Fusion assembly is a highly promising technique for joining thermoplastic composite to thermoset composites,
enabling the use of both the most affordable composite material and process for each substructure. However,
some major challenges need to be addressed such as functionalizing the thermoset composite surface through co-
curing with an appropriate thermoplastic interlayer or realizing a fast and robust welding process that meets all
quality and mechanical requirements. In this paper, we investigated the potential of polyetheretherketone (PEEK)
and its amorphous (PEEK A) and semicristalline (PEEK SC) states as interlayer materials, co-cured onto thermoset
composites. A surface preparation involving the atmospheric plasma process demonstrated that both PEEK state
materials can be used as interlayer with favorable adhesion properties. The influence of the plasma treatment on
surface properties and morphology was also experimentally characterized.

 

Surface functionalization of thermoset composit for infrared hybrid welding 8 MB

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SAMPE Europe Conference 2020

Unlike their metal counterparts, composite structures do not readily conduct away the electrical currents generated by lightning strikes. Cost reduction and expected production in aeronautics require automated manufacturing process. The development of an automated technology to metallize polymer based composite for lightning strike protection is the aim of the CO3 project. In this study, thermal and electrical conductivities of the composites are achieved by the cold spray deposition of the metallic (Cu or Al) coating. The critical points to be addressed were substrate erosion during cold spray, lack of polymer-metal adhesion as well as poor deposition efficiency.

Metallization of composite aeronautics structure through robotized deposition Cold Spray technologies 2 MB

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Metallization of TS and TP composite through Cold Spray robotized deposition technologies 6 MB

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PAU Conference December 2021

Cold Spray metallization of thermoset ant thermoplastic composites for ligthning strike protection.

Programme_jt_pau_2021 556 KB

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A3TS Pau Décembre 2021 6 MB

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