3D-printing is an upcoming technology. Some modern 3D printers can print continuous carbon fibre, which improves the mechanical properties of the printed part. However, carbon fibre also has interesting electrical properties, e.g. a changing resistivity when the fibre is strained. This property can be used to create self-sensing structures. Current research is being done to make a flapping wing drone, which flies similar to a bird. To further research the complex flight dynamics of such a drone, more information is required such as the air velocity over the wing, or the flexing of the wing during the flight.
This bachelor assignment is about combining these two topics to create a self-sensing spar for the wing, which uses carbon fibre to measure the flexing of the wing. This technology has the potential to measure in locations where it is difficult to place additional sensors, e.g. due to size constraints. Additionally, this could reduce the weight and parts count of the drone, which reduces cost and increases simplicity.
The goal of this bachelor assignment is to make spars for the wing of a robotic bird. These spars should be functional and have self-sensing capabilities to measure the deformation of the wing.
This bachelor assignment should show to what extent 3D-printed carbon fibre can be used to make functional sensors and explore the strengths and limitations of this technology.