Optical Black Coatings On Carbon Fiber Reinforced Composite Sandwich Structure With Aluminum Honeycomb Core For Satellites Applications.
2022-26-1141
05/26/2022
- Event
- Content
- The composite sandwich structure has been in use in space applications as a result of its high strength to weight ratio coupled with excellent compressibility strength. In particular, there has been tremendous demand for honeycomb sandwich structures for satellite application in recent years. Currently, a major problem needs to be addressed concerning reflections from satellite structures which leads to capturing in-accurate data of celestial bodies by ground-based astronomy. In the light of the above, this paper focuses on the development of novel optical black coatings on Carbon fiber reinforced composite sandwich structures with aluminum honeycomb core. A thin layer of Multi-Walled Carbon Nanotubes black coatings was developed on the surfaces of Carbon fiber reinforced composite laminate of the sandwich structure using Chemical Vapour Deposition technique, to provide low scattering and low reflective surface. Three-point bending test are performed for evaluating the Youngs modulus of the composite sandwich structure and the Compressibility test is carried out to determine the wall buckling of the Aluminum honeycomb core. The three-point bending test and compressibility test are simulated in ANSYS with the same boundary conditions as the practical tests. To sum up, the results obtained from ANSYS and the practical test are compared and analyzed. The surface structures of the optical black coating are imaged using a scanning electron microscope to determine the diameter of Multi-Walled Carbon Nanotubes to evaluate the effects on scattering and absorption based on the diameter of the nanotube furthermore optical properties such as absorptivity and reflectivity will be reported in this paper.
- Citation
- CS PhD, R., J, S., and Chaurasia, P., "Optical Black Coatings On Carbon Fiber Reinforced Composite Sandwich Structure With Aluminum Honeycomb Core For Satellites Applications.," SAE Technical Paper 2022-26-1141, 2022, .