Temperature self compensation for dynamic sensitivity in 3D-printed piezoresistive sensors

Krivic, Gašper (avtor), Tocci, Mariachiara (avtor), Staffa, Agnese (avtor), Palmieri, Massimiliano (avtor), Cianetti, Filippo (avtor), Slavič, Janko (avtor)

Temperature variations induce nonlinear changes in the dynamic sensitivity of 3D-printed piezoresistive sensors, thereby limiting their deployment in thermally variable environments. Conventional temperature- compensation approaches rely on dedicated temperature sensors or extensive calibration matrices, which increase system complexity and reduce measurement reliability. This research investigates the hypothesis that temperature-induced changes in dynamic sensitivity in 3D- printed thermoplastic extrusion technology piezoresistive sensors are directly proportional to the changes in electrical resistance. The hypothesis was tested against twenty-four single-process 3D-printed accelerometers operating from 5 °C to 35 °C in three humidity conditions. Strong linear correlations (R$^2$ > 0.98) between the relative resistance and the dynamic sensitivity changes were found. The resistance-based temperature self-compensation method does not require additional sensors. It enables accurate sensitivity prediction with errors below 5 % in normal humidity and 12 % in extreme humidity environments. This approach eliminates the need for temperature sensors while maintaining measurement accuracy, enabling the deployment of thermoplastic 3D-printed piezoresistive sensors in smart structures operating across varying environmental conditions.

• Jezik: Angleški jezik
• Ključne besede: 3D printing, piezoresistive sensors, smart structures, temperature self compensation, resistance, dynamic sensitivity
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2026
• Št. strani: 11 str.
• Številčenje: Vol. 309, art. 111075
• PID: 20.500.12556/RUL-176584
• UDK: 004.92:531
• ISSN pri članku: 1879-2162
• DOI: 10.1016/j.ijmecsci.2025.111075
• COBISS.SI-ID: 259970051
• Datum objave v RUL: 04.12.2025

Gradivo je del revije

• Naslov: International journal of mechanical sciences
• Založnik: Elsevier
• ISSN: 1879-2162
• COBISS.SI-ID: 23008517

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: 3D tiskanje, piezouporni senzorji, pametne strukture, temperaturna samokompenzacija, električna upornost, dinamična občutljivost