Package analysis of 3D-printed piezoresistive strain gauge sensors

Sumit Kumar Das; Joshua R. Baptist; Ritvij Sahasrabuddhe; Woo H. Lee; Dan O. Popa

doi:10.1117/12.2224352

13 May 2016 Package analysis of 3D-printed piezoresistive strain gauge sensors

Sumit Kumar Das, Joshua R. Baptist, Ritvij Sahasrabuddhe, Woo H. Lee, Dan O. Popa

Proceedings Volume 9859, Sensors for Next-Generation Robotics III; 985905 (2016) https://doi.org/10.1117/12.2224352
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

Poly(3,4-ethyle- nedioxythiophene)-poly(styrenesulfonate) or PEDOT:PSS is a flexible polymer which exhibits piezo-resistive properties when subjected to structural deformation. PEDOT:PSS has a high conductivity and thermal stability which makes it an ideal candidate for use as a pressure sensor. Applications of this technology includes whole body robot skin that can increase the safety and physical collaboration of robots in close proximity to humans. In this paper, we present a finite element model of strain gauge touch sensors which have been 3D-printed onto Kapton and silicone substrates using Electro-Hydro-Dynamic ink-jetting. Simulations of the piezoresistive and structural model for the entire packaged sensor was carried out using COMSOLR , and compared with experimental results for validation. The model will be useful in designing future robot skin with predictable performances.

Citation Download Citation

Sumit Kumar Das, Joshua R. Baptist, Ritvij Sahasrabuddhe, Woo H. Lee, and Dan O. Popa "Package analysis of 3D-printed piezoresistive strain gauge sensors", Proc. SPIE 9859, Sensors for Next-Generation Robotics III, 985905 (13 May 2016); https://doi.org/10.1117/12.2224352

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