University of Twente Student Theses
Development of instrumented, FFF 3D printed, pessary rings to quantify deformations
van Deinse, L. (2023) Development of instrumented, FFF 3D printed, pessary rings to quantify deformations.
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| Abstract: | This bachelor assignment concerns the development of 3D printed pessary rings to sense mechanical deformations. Instead of using the more complicated torus shape, it is simplified to a cylinder. Different models are examined to deduce the locations of highest stress during compression of the cross-section, a deformation that is know to be present in a successfully implemented pessary. A decision is made between a piezoresistive readout and a capacitive one. The piezoresistive configuration was chosen due to the simpler implementation. Two designs are fabricated and tested, one with multiple conductive PI-ETPU wires running along the length of the cylinder, and one with two conductive PI-ETPU plates going from the center to the outside of the cylinder made from X60 TPU. The results indicate that the sensors can indeed respond to the compression. A peculiar shape was observed in the responses that was also observed in previous research. Possible causes are speculated and recommendations are made for further research. |
| Item Type: | Essay (Bachelor) |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Programme: | Advanced Technology BSc (50002) |
| Link to this item: | https://purl.utwente.nl/essays/99024 |
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