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Structural modeling of actuation of IPMC in dry environment: effect of water content and activity

Swarrup, Sakthi J and Ranjan, Ganguli and Giridhar, Madras (2017) Structural modeling of actuation of IPMC in dry environment: effect of water content and activity. In: SMART STRUCTURES AND SYSTEMS, 19 (5). pp. 553-565.

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Official URL: http://doi.org/10.12989/sss.2017.19.5.553


Structural modeling of unencapsulated ionic polymer metal composite (u-IPMC) actuators that are used for flapping the insect scale-flapping wing of micro air vehicles (FMAV) in dry environmental conditions is carried out. Structural modeling for optimization of design parameters for retention of water, maximize actuation performance and to study the influence of water activity on the actuation characteristics of u-IPMC is explored for use in FMAV. The influence of equivalent weight of Nafion polymer, cations, concentration of cations, pre-treatment procedures on retention of water of u-IPMCs and on actuation parameters, flapping angle, flexural stiffness and actuation displacement are investigated. IPMC designed with Nafion having equivalent weight 900-1100, pre-heated at 30 degrees C and with sodium as the cations is promising for optimum retention of water and actuation performance. The actuation parameters while in operation in dry and humid environment with varying water activity can be tuned to desirable frequency, deflection, flap angle and flexural stiffness by changing the water activity and operational temperature of the environment.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the TECHNO-PRESS, PO BOX 33, YUSEONG, DAEJEON 305-600, SOUTH KOREA
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 01 Sep 2017 10:20
Last Modified: 01 Sep 2017 10:20
URI: http://eprints.iisc.ac.in/id/eprint/57734

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