Influence of thin interphase on magnetoelectric effect of coated cylindrical fibrous multiferroic composites

Abstract

Effective magnetoelectric effect in multicoated circular fibrous multiferroic compositesThe work reported in this paper aims at studying the magneto-electric field variation accounting for a thin interphase layer with different materials. Thin interphase within a solid can significantly affect the overall response of the composite material. In order to obtain this phenomenon, we replace the interphase by an imperfect interface with appropriately devised interface conditions. To get the interface conditions, a Taylor expansion of the relevant physical fields in the thin region is introduced. Those conditions do not involve the fields within the interphase, which just have relation to the material properties and the fields of the adjacent media. Finally, the influence of the thin interphase on the performance of fibrous multiferroic composites is analyzed in detail by using our method and some useful conclusions are summarized. V C 2013 AIP Publishing LLC.

Fracture analysis on a multiferroic cylindrical shell: Effects of coupled interphase imperfections

“…In these generalized cases, the two above-mentioned assumptions are reformulated as follows: (a) the generalized stress is continuous across the interphase, but the generalized displacement therein is discontinuous and (b) the former is proportional to the jump of the latter. In the past decade, the generalized linear spring model (GLSM) has been widely used in studying various boundary value problems (Ang et al, 2004; Chen et al, 2009; Jin and Fang, 2008; Li and Lee, 2009; Otero et al, 2012, 2013; Wang, 2014; Wang and Pan, 2010; Wang and Sudak, 2007; Yuan et al, 2014; Zhou et al, 2012) of composites with imperfect interphases and also in theoretically predicting the effective properties (Duan and Karihaloo, 2007; Wang et al, 2014; Wurkner et al, 2013; Yanase and Ju, 2012; Yue and Xu, 2013).…”

Magnetoelectric Coupling and Overall Properties of a Class of Multiferroic Composites

“…Then, a complex variable approach was adopted to find the 2-D average field, and, finally, the Mori-Tanaka method was employed to calculate the overall property of the imperfectly bonded fibrous composite. Later Dinzart and Sabar (2012), Kuo (2013), and Yue and Xu (2013) have also considered a similar issue for the fibrous composites. The approach of Dinzart and Sabar (2012) was very similar to that of Wang and Pan (2007).…”

“…The approach of Dinzart and Sabar (2012) was very similar to that of Wang and Pan (2007). On the other hand, Kuo (2013) has extended Rayleigh's analysis of periodic conditions to the coupled, imperfectly bonded interface, while Yue and Xu (2013) have instead used Taylor's expansion to solve the fields in the interphase. These few works have all pointed to the significance of interface conditions in magnetoelectric coupling, but so far the focus of interface effects has been limited to the fibrous composites.…”