Theoretical and experimental analysis of temperature dependent nonlinear behaviour of tri-layered magnetoelectric composites

Subhani, Sk M.; Maniprakash, S.; Arockiarajan, A.

doi:10.1016/j.mechmat.2018.08.006

Cited by 14 publications

(5 citation statements)

References 59 publications

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“…The nonlinear ME coefficient is then estimated for a symmetric trilayer Terfenol-D/PZT/Terfenol-D composite as specified in [31]. The results of the developed model and that in literature are shown in figure 2(b), wherein, the nonlinear ME coefficient for the trilayer composite is also found to be in good agreement.…”

Section: Resultsmentioning

confidence: 72%

Nonlinear magnetoelectric effect in unsymmetric laminated composites

Sudersan

Maniprakash

Arockiarajan

2018

Smart Mater. Struct.

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This work is aimed at the development of a finite element formulation for the analysis of unsymmetric magneto-electric (ME) laminated structures. While analytical solutions are readily available for symmetric structures, the coupling between axial and bending deformations in unsymmetric structures impedes such an analytical solution thus motivating the search for a numerical solution. The proposed finite element model includes this coupling under Euler-Bernoulli assumptions and further includes the material nonlinearity exhibited by the ferromagnetic phase. The enhancement of the ME coefficient under resonant conditions has also been studied under bending and axial resonant regimes. Resonant ME coefficients of magnitude at least 30 times higher than the quasi-static values were estimated. A parametric study has also been performed with the aim of optimizing the ME coefficient with respect to the applied DC bias field, operating frequency, volume fraction and the modulus ratio of the constituents and the different boundary conditions. The boundary conditions yielding a cantilever configuration were found to offer the least bending resonant frequency and the highest axial resonant ME coefficient, thus proving to be the most viable in practice.

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Section: Resultsmentioning

confidence: 72%

Nonlinear magnetoelectric effect in unsymmetric laminated composites

Sudersan

Maniprakash

Arockiarajan

2018

Smart Mater. Struct.

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“…Notably, various configurations have been proposed in layered or 2-2 composites depending on the geometry, structure, or the connecting scheme of the magnetostrictive and piezoelectric layers. The most prevalent form in layered configuration have been bilayers, trilayers, or multilayers of magnetostrictive and piezoelectric constituents, wherein these constituents take either square or plate-shaped [45], rectangular or beam shaped [46], disc-shaped [47], ring-shaped [48] or cylindrical shaped [49] geometries. Along with these commonly used structures, certain other distinct geometries such as 'A-shaped [50], dumb-bell shaped [51], triangle-shaped, and rhombus-shaped layered composites [52] have also been fabricated.…”

Section: Introductionmentioning

confidence: 99%

Epoxy-free fabrication techniques for layered/2-2 magnetoelectric composite: a review

Kumar

Arockiarajan²

2022

Smart Mater. Struct.

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Layered or 2-2 conﬁguration magnetoelectric (ME) composites have gained signiﬁcant interest in the last few decades owing to their ease of fabrication and relatively high ME output realizable at room temperature. Conventionally, layered ME composites are fabricated by bonding the constituent magnetostrictive and piezoelectric layers via an epoxy or adhesive. Thus, the epoxied interface acts as the medium of strain transfer between the constituent layers resulting in the ME effect. However, the presence of epoxy makes the composite prone to limitations such as reduced device life due to aging epoxy, reduced strain transfer efﬁcacy due to low stiffness of epoxy, and degradation of composite properties at elevated temperatures due to the low glass transition temperature of epoxy material. Thus, various epoxy-free methods for layered or 2-2 type ME composite fabrication have been developed in the last two decades to circumvent these limitations. These methods include co-ﬁring technique, electroless deposition, electrodeposition, shrink-ﬁt, and press-ﬁt. Each of these methods has tried to mitigate the disadvantages of its predecessors, however posing its own set of limitations. This review article captures the evolutionary journey of the development of each of these aforementioned techniques in a chronological sequence by highlighting the advantages and disadvantages offered by each of them. Subsequently, a brief overview of state of the art has been provided in summary, followed by a discussion on the potential avenues that may be probed further to improve the available epoxy-free fabrication techniques for layered or 2-2 ME composites.

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“…Moreover, the material parameters (i.e., elasticity modulus and piezomagnetic coefficient) of magnetostrictive materials are very sensitive to the external stimuli like bias magnetic and stress loadings. [24][25][26][27][28] This enables a new theoretical mechanism for tunable or active manipulation of ME performance of the energy harvester. [29] However, the nonlinear coupled effects of such external stimuli on ME coupling of the ringshaped composites have not been well investigated since most of the theoretical models were established using linear constitutive relations of constituent materials.…”

Section: Introductionmentioning

confidence: 99%

Insights into the regulation mechanism of ring-shaped magnetoelectric energy harvesters via mechanical and magnetic conditions*

Shi¹,

Li²,

Yang³

2021

Chinese Phys. B

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This paper presents a theoretical model for predicting and tuning magnetoelectric (ME) effect of ring-shaped composites, in which stress boundary conditions are empoyed and the multi-field coupling property of giant magnetostrictive materials are taken into account. A linear analytical solutions for the closed-and open-circuit ME voltages are derived simultaneously using mechanical differential equations, interface and boundary conditions, and electrical equations. For nonlinear ME coupling effect, the nonlinear multi-field coupling constitutive equation is reduced to an equivalent form by expanding the strains as a Taylor series in the vicinity of bias magnetic field. Sequentially, the linear model is generalized to a nonlinear one involving the field-dependent material parameters. The results show that setting a stress-free condition is beneficial for reducing resonance frequency while applying clamped conditions on the inner and outer boundaries may improve the maximum output power density. In addition, performing stress conditions on one of the boundaries may enhance ME coupling significantly, without changing the corresponding resonance frequency and optimal resistance. When external stimuli like bias magnetic field and pre-stress are applied to the ring-shaped composites, a novel dual peak phenomenon in the ME voltage curve around resonance frequencies is revealed theoretically, indicating that strong ME coupling may be achieved within a wider bias field region. Eventually, the mutual coordination of the bias field and pre-stress may enhance ME coupling as well as tuning the resonance frequency, and thus is pivotal for tunable control of ME energy harvesters. The proposed model can be applied to design high-performance energy harvesters by manipulating the mechanical conditions and external stimuli.

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Theoretical and experimental analysis of temperature dependent nonlinear behaviour of tri-layered magnetoelectric composites

Cited by 14 publications

References 59 publications

Nonlinear magnetoelectric effect in unsymmetric laminated composites

Nonlinear magnetoelectric effect in unsymmetric laminated composites

Epoxy-free fabrication techniques for layered/2-2 magnetoelectric composite: a review

Insights into the regulation mechanism of ring-shaped magnetoelectric energy harvesters via mechanical and magnetic conditions*

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