Temperature self compensation for dynamic sensitivity in 3D-printed piezoresistive sensorsKrivic, Gašper (Avtor) Tocci, Mariachiara (Avtor) Staffa, Agnese (Avtor) Palmieri, Massimiliano (Avtor) Cianetti, Filippo (Avtor) Slavič, Janko (Avtor) 3D printingpiezoresistive sensorssmart structurestemperature self compensationresistancedynamic sensitivityTemperature 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.20262025-12-04 12:39:05Članek v reviji176584UDK: 004.92:531ISSN pri članku: 1879-2162DOI: 10.1016/j.ijmecsci.2025.111075COBISS_ID: 259970051sl