D1.4 - 3D printed machine parts: functionalization during additive fabrication
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- D1 - 3D-Printed Sensors and Systems
- D. Gräbner - Friedrich-Wilhelm-Bessel-Institut Forschungsgesellschaft mbH (FWBI), Bremen (Germany), G. Dumstorff, F. Lucklum - University of Bremen (Germany)
- 438 - 442
Functionalization of machine parts by integrating sensors into the surface or bulk is necessary when we think about smart or intelligent components. So far different sensors measuring strain, temperature or e.g. corrosion have been integrated in various materials like concrete, metals or plastics. The integration is mostly done during fabrication, where the sensor is recast in the material during processing. Approaches to integrate sensors into parts fabricated by additive manufacturing are still rarely found. Especially in the case of rapid prototyping, additive techniques are going to substitute the machining of parts using classical technologies like cutting, drilling and milling. To characterize such 3D printed machine parts the direct integration of sensing elements is the next logical step. This can be done in multi-material printing by using insulating and conductive materials. In case of single material printing, our idea is to integrate a sensing element during the printing process itself. As proo-fof-concept, we present the functionalization of 3D printed screws. Strain gauges screen-printed on a 6 μm thick foil are interposed into the 3D part during microstereolithography printing. We measure the torsional strain in the screw head and compare the defect effect to screws without integrated elements.