Dumais, Keanna, Biglarbegian, Mohammad et Garces, Irina. 2025. « Fully 3D printed tactile pressure sensor ». Communication lors de la conférence : CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025).
Prévisualisation |
PDF
500 - Fully 3D printed tactile pressure .pdf - Version publiée Licence d'utilisation : Tous les droits réservés aux détenteurs du droit d'auteur. Télécharger (1MB) | Prévisualisation |
Résumé
With continuous advancements in additive manufacturing and an expanding selection of printable materials, the range of products manufacturable via Fused Deposition Modelling (FDM) 3D printing continues to grow. One of the most promising applications of additive manufacturing is the production of tailored, custom-fit prosthetic components, where precise adaptability is crucial for comfort and function. Conductive filaments enable the 3D printing of electronics, and multi-material printing allows for fully 3D-printed sensors with practical applications such as pressure sensing and monitoring. This study investigates a strain gauge-like pressure sensor designed for its integration into prosthetic sockets, where pressure monitoring is critical for comfort and fit. The sensor operates by leveraging the deformation of a conductive material that deforms under applied pressure, altering its length and cross-sectional area and thereby changing its electrical resistance. This resistance change correlates with mechanical stress, enabling pressure measurement. The sensor design utilizes Multi3D’s Electrifi conductive filament as the pressure-sensitive material, polylactic acid (PLA) for rigid structural components, and thermoplastic polyurethane (TPU) for flexible support where needed. Multiple sensor prototypes were 3D-printed and tested to evaluate performance. Changes in electrical resistance were measured using a Wheatstone Bridge circuit. The circuit also includes an instrumentation amplifier and a low-pass filter for better signal resolution. The sensors were tested in compression using a mechanical force applicator up to an equivalent stress of 500 [kPa] at a loading rate of 800 [N/s]. This simulates the loading conditions within a prosthetic socket, the proposed application for these sensors. Results confirmed the design’s ability to detect continuous changes in applied mechanical stress, demonstrating its viability for continuous pressure monitoring in sensor arrays.
| Type de document: | Communication (Communication) |
|---|---|
| Informations complémentaires: | Progress in Canadian Mechanical Engineering, Volume 8. Co-chairs: Lucas A. Hof, Giuseppe Di Labbio, Antoine Tahan, Marlène Sanjosé, Sébastien Lalonde and Nicole R. Demarquette. |
| Date de dépôt: | 18 déc. 2025 14:30 |
| Dernière modification: | 18 déc. 2025 14:30 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32092 |
Actions (Authentification requise)
 |
Dernière vérification avant le dépôt |