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Abstract
Within this work a passive and wireless magnetic sensor, to monitor linear displacements, is proposed. We exploit recent advances in 3D printing and fabricate a polymer bonded magnet with a spatially linear magnetic field component corresponding to the length of the magnet. Regulating the magnetic compound fraction during printing allows specific shaping of the magnetic field distribution. A giant magnetoresistance magnetic field sensor is combined with a radio-frequency identification tag in order to passively monitor the exerted magnetic field of the printed magnet. Due to the tailored magnetic field, a displacement of the magnet with respect to the sensor can be detected within the sub-mm regime. The sensor design provides good flexibility by controlling the 3D printing process according to application needs. Absolute displacement detection using low cost components and providing passive operation, long term stability, and longevity renders the proposed sensor system ideal for structural health monitoring applications.
Original language | English |
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Article number | 115121 |
Number of pages | 11 |
Journal | AIP Advances |
Volume | 7 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2017 |
Austrian Fields of Science 2012
- 103018 Materials physics
Keywords
- SENSOR
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Dive into the research topics of 'Contactless and absolute linear displacement detection based upon 3D printed magnets combined with passive radio-frequency identification'. Together they form a unique fingerprint.Projects
- 1 Finished
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CD-Labor Advanced Magnetic Sensing and Materials
Süss, D. & Vranckx Herrera, S. E.
1/05/17 → 31/07/20
Project: Research cooperation