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Thursday, March 14 • 12:00 - 12:30
Modelling the Microstructure of Cold Sprayed Composite Coatings

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In cooperation with IMT
In this presentation, we study the microstructure of cold sprayed coatings of copper-PEEK mixed feedstock powder onto a carbon fiber reinforced polymer. The microstructure of the coating is made of a packing of seemingly round-shaped copper particles of varying sizes embedded in a polymer matrix. The copper particles are separated by thin interstices filled with the polymer. The coating is designed to cover the body of recent commercial aircrafts, to protect the aircraft from lightning impacts by ensuring that the surface is conductive enough to evacuate electrical charges. A high resistivity contrast is observed between the copper particles and the polymer matrix. Therefore, the global resistivity of the material strongly depends on the microstructure geometry. Following an approach commonly used in materials science, we investigate the influence of the microstructure on the electrical properties of the material by designing a 3D stochastic model that enables us to simulate the microstructure. The method is very general and could potentially be applied to model any microstructure exhibiting similar interstices between aggregates of particles.

Speakers
avatar for Bruno FIGLIUZZI

Bruno FIGLIUZZI

Assistant Professor, Mines ParisTech - PSL Research University
The Center for Mathematical Morphology of Mines ParisTech was founded in 1967. Its research focuses on image processing and mathematical morphology, a mathematical and computer science theory dealing with the analysis of spatial shapes and structures.Bruno Figliuzzi obtained his PhD... Read More →



Thursday March 14, 2019 12:00 - 12:30
Composites In Action with DLR & IMT (Hall 5 / Q90)
  • Theme Additive Manufacturing & 3D Printing