This recent article present an improved methodology to calculate in-situ Young's moduli of the constitutive layers in a multilayer systems (e.g. thin films, SOFCs, TBCs etc.)
Pandey, A., Shyam, A., Liu, Z., & Goettler, R. (2014). In-situ Young’s Moduli of the Constitutive Layers in a Solid Oxide Fuel Cell. Journal of Power Sources.
http://www.sciencedirect.com/science/article/pii/S0378775314015341
Highlights
•A methodology to determine the modulus of functional layers in SOFCs is reported.
•In-situ Young's modulus for various functional layers is reported.
•The proposed testing methodology could be applied for other multilayer systems.
This recent article presents an improved methodology to calculate in-situ Young's moduli of the constitutive layers in a multilayer systems (e.g. thin films, SOFCs, TBCs etc.)
Amit Pandey, Amit Shyam, Zhien Liu, Richard Goettler, In-situ Young's moduli of the constitutive layers in a solid oxide fuel cell, Journal of Power Sources, Volume 273, 1 January 2015, Pages 522-529
http://www.sciencedirect.com/science/article/pii/S0378775314015341
Highlights
•A methodology to determine the modulus of functional layers in SOFCs is reported.
•In-situ Young's modulus for various functional layers is reported.
•The proposed testing methodology could be applied for other multilayer systems.
The stability of anisotropic electroactive polymers is investigated. A general criterion for the onset of instabilities under plane-strain conditions is introduced in terms of a sextic polynomial whose coefficients depend on the instantaneous electroelastic moduli. In a way of an example, the stable domains of layered neo-Hookean dielectrics are determined. It is found that depending on the direction of the electrostatic excitation field relative to the lamination direction, the critical stretch ratios at which instabilities may occur can be either larger or smaller than the ones for the purely mechanical case.