A dynamic physics-based model for tubular IPMC sensors under torsional excitation

Hong Lei; Montassar Aidi Sharif; Xiaobo Tan

doi:10.1117/12.2219577

15 April 2016 A dynamic physics-based model for tubular IPMC sensors under torsional excitation

Hong Lei, Montassar Aidi Sharif, Xiaobo Tan

Proceedings Volume 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016; 979836 (2016) https://doi.org/10.1117/12.2219577
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Ionic polymer-metal composites (IPMCs) have intrinsic sensing and actuation properties. An IPMC sensor typically has the beam shape and responds to bending deﬂections only. Recently tubular IPMCs have been proposed for omnidirectional sensing of bending stimuli. In this paper we report, to our best knowledge, the ﬁrst study on torsion sensing with tubular IPMCs. In particular, a dynamic, physics-based model is presented for a tubular IPMC sensor under pure torsional stimulus. With the symmetric tubular structure and the pure torsion condition, the stress distribution inside the polymer only varies along the radial direction, resulting in a one-dimensional model. The dynamic model is derived by analytically solving the governing partial diﬀerential equation, accommodating the assumed boundary condition that the charge density is proportional to the mechanically induced stress. Experiments are further conducted to estimate the physical parameters of the proposed model.

Citation Download Citation

Hong Lei, Montassar Aidi Sharif, and Xiaobo Tan "A dynamic physics-based model for tubular IPMC sensors under torsional excitation", Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, 979836 (15 April 2016); https://doi.org/10.1117/12.2219577

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