Pyroelectric effect of the porous piezoelectric materials with correlative mono - and polydisperse random structures

A. A. Pan’kov

State National Research Politechnical University of Perm, Komsomolskiy pr. 29, Perm 614990, Russia

 

The paper is received on August 2, 2018

 

Abstract. The pyroelectric effect of a porous piezoelectric material of PVDF in binary approach of a method of correlation polydisperse components with the specified accounting of correlation functions quasiperiodic mono - and the polydisperse correlated structures with the unidirectional tunnel porosity is investigated. In the binary approach required tensors of effective pyroelectromagnetoelastic properties of a two-phase piezocomposite are calculated on an analytical formula through the known decisions for traditional polydisperse structures and "the effective correlation coefficient" is the sum of initial and correction coefficients of the correlation set quasiperiodic monodisperse and polydisperse structures; decisions for electromagnetoelastic fields in composite phases are received. Results of calculation in various approximations of effective longitudinal pyroelectric coefficient for monodisperse quasiperiodic and polydisperse structures depending on a volume fraction of the unidirectional tunnel porosity in piezoelectric material of PVDF are presented; the type of structure and a volume fraction of a porosity at which the greatest value of pyroelectric coefficient is reached are established.

Key words: piezocomposite; electro-magnetic elasticity; correlation function; effective properties; polydisperse structure.

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For citation:
A. A. Pan’kov. Pyroelectric effect of the porous piezoelectric materials with correlative mono - and polydisperse random structures. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 8. Available at http://jre.cplire.ru/jre/aug18/4/text.pdf

DOI  10.30898/1684-1719.2018.8.4