All-printed multifunctional sensors for structural health monitoring of inflatable habitats

Matt Zuzelski; Isaac Little; Jun Zhuang; Zhangxian Deng

doi:10.1117/12.3009977

9 May 2024 All-printed multifunctional sensors for structural health monitoring of inflatable habitats

Matt Zuzelski, Isaac Little, Jun Zhuang, Zhangxian Deng

Author Affiliations +

Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 1295123 (2024) https://doi.org/10.1117/12.3009977
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

Inflatable structures present an efficient solution for deep space habitats, enabling compact storage during launch and providing a large operational volume once deployed in space. However, their lightweight and thin-walled design makes them susceptible to Micro-Meteoroids and Orbital Debris (MMODs), as well as the cumulative effects of creep strain. To ensure the safety of these inflatable habitats, this study used a commercial material extrusion system to prototype a flexible and multifunctional sensor for non-destructive structural health monitoring. This unique sensor consists of a piezoelectric polyvinylidene fluoride-trifluoroethylene (PVDF-trFE) film sandwiched between a pair of electrodes. The piezoelectric layer detects dynamic impact force due to MMODs and the electrodes printed into piezoresistive strain gauges are capable of measuring creep strain. In this study, a comprehensive sensor fabrication technique, including piezoelectric ink synthesis, printer settings, and material post-processing method, was first developed. Subsequent experiments using a mechanical load frame and impact hammer quantified the sensor sensitivity in piezoresistive and piezoelectric mode, respectively. The printed sensor achieved a gauge factor exceeding 8 in piezoresistive mode. An additional machine learning model predicted impact magnitude and impact width with linear correlation coefficients of 0.99 and 0.89, respectively, when compared to the tested values. These promising results underscore the potential for in-situ manufacturing of such multifunctional sensors, paving the way for sustainable deep space missions that not only minimize launch mass but also diminish reliance on exhaustive pre-launch designs.

Conference Presentation

Citation Download Citation

Matt Zuzelski, Isaac Little, Jun Zhuang, and Zhangxian Deng "All-printed multifunctional sensors for structural health monitoring of inflatable habitats", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 1295123 (9 May 2024); https://doi.org/10.1117/12.3009977

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