Hybrid piezoelectric-magnetic, self-sensing actuator for vibration damping

Ji Eun Lee; Hani Naguib

doi:10.1117/12.2663411

18 April 2023 Hybrid piezoelectric-magnetic, self-sensing actuator for vibration damping

Ji Eun Lee, Hani Naguib

Proceedings Volume 12485, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2023; 124850C (2023) https://doi.org/10.1117/12.2663411
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

Stimuli-responsive soft actuators can actuate from an external stimulus. Compared to traditional actuators, these soft actuators offer advantages such as flexibility, conformability, better biomimicking ability, lower cost, and higher power to-weight ratio. These advantages are ideal for the vibration damping of transportation vehicles where there is a need for strong and lightweight designs whilst maintaining user comfort to encourage widespread public adoption. Piezoelectric materials are extensively used as sensors and actuators due to its piezoelectric property, and magnetic actuation is known for its accurate control. The current study investigates the development of a nanocomposite that can exhibit both piezoelectric and magnetic effects in terms of sensing and actuation, respectively. To achieve this, iron (III) oxide (Fe₃O₄) nanoparticles were attached to the surfaces of functionalized single walled carbon nanotubes (f-CNT), and the resulting nanofiller was embedded into a PVDF matrix. The Fe₃O₄ will provide magnetic actuation while the SWCNT will enhance the sensing performance of PVDF through its piezoelectric property. The proposed Fe3O4/f-CNT/PVDF showed effective vibration sensing and damping of excessive vibration on next generation of transportation vehicles for enhanced human safety and comfort. This research will assist in advancing multi stimuli-responsive materials and improve functionality and commerciality of soft smart material devices.

Conference Presentation

Citation Download Citation

Ji Eun Lee and Hani Naguib "Hybrid piezoelectric-magnetic, self-sensing actuator for vibration damping", Proc. SPIE 12485, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2023, 124850C (18 April 2023); https://doi.org/10.1117/12.2663411

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