Micromechanics-based prediction of the effective properties of piezoelectric composite having interfacial imperfections

Sangryun Lee, Jiyoung Jung, Seunghwa Ryu

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We derive an analytical expression to predict the effective properties of a particulate-reinforced piezoelectric composite with interfacial imperfections using a micromechanics-based mean–field approach. We correctly derive the analytical formula of the modified Eshelby tensor, the modified concentration tensor, and the effective property equations based on the modified Mori–Tanaka method in the presence of interfacial imperfections. Our results are validated against finite element analyses (FEA) for the entire range of interfacial damage levels, from a perfect to a completely disconnected and insulated interface. For the facile evaluation of the nontrivial tensorial equations, we adopt the Mandel notation to perform tensor operations with 9×9 symmetric matrix operations. We apply the method to predict the effective properties of a representative piezoelectric composite consisting of polyvinylidene fluoride (PVDF) and SiC reinforcements.

Original languageEnglish
Article number112076
JournalComposite Structures
Volume240
DOIs
StatePublished - 15 May 2020

Bibliographical note

Funding Information:
This research was supported by the Basic Science Program ( NRF-2019R1A2C4070690 ), the Creative Materials Discovery Program ( NRF-2016M3D1A1900038 ), and the International Research & Development Program ( NRF-2018K2A9A2A12000223 ) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT of Korea .

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

  • Effective modulus
  • Eshelby tensor
  • Interfacial damage
  • Piezoelectric composite

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