## Abstract

The linear strong-property-fluctuation theory (SPFT) was developed in order to estimate the constitutive parameters of certain homogenized composite materials (HCMs) in a long-wavelength regime. The component materials of the HCM were generally orthorhombic mm2 piezoelectric materials, which were randomly distributed as oriented ellipsoidal particles. At the second-order level of approximation, wherein a two-point correlation function and its associated correlation length characterize the component material distributions, the SPFT estimates of the HCM constitutive parameters were expressed in terms of numerically tractable two-dimensional integrals. Representative numerical calculations revealed that (i) the lowest order SPFT estimates are qualitatively similar to those provided by the corresponding Mori-Tanaka homogenization formalism, but differences between the two estimates become more pronounced as the component particles become more eccentric in shape, and (ii) the second-order SPFT estimate provides a significant correction to the lowest order estimate, which accommodates attenuation due to scattering losses.

Original language | English |
---|---|

Article number | 165402 |

Pages (from-to) | - |

Number of pages | 24 |

Journal | Journal of Physics A: Mathematical and Theoretical |

Volume | 42 |

Issue number | 16 |

DOIs | |

Publication status | Published - 24 Apr 2009 |

## Keywords

- ELLIPSOIDAL INCLUSIONS
- ELECTROMAGNETIC-WAVES
- THIN-FILMS
- SCATTERING
- MEDIA
- FIELD
- METAMATERIALS
- CONVERGENCE