Effective properties of spherically anisotropic piezoelectric composites

Effective Properties of Random Composites

We propose a new concept of the effective properties of composites with uncertain spatial arrangements of constitutive materials and within-material properties. Rather than replacing a heterogeneous property with a constant effective parameter, we seek to preserve the internal macro structure of a composite. This general concept is used to derive the effective conductivity of composite heteroge...

Effective intrinsic linear properties of laminar piezoelectric composites and simple ferroelectric domain structures

The effective properties of piezoelectric laminates have been analyzed, based on the calculation of internal fields and making use of a simple matrix manipulation method. The results are expressed in a compact notation which is convenient for numerical implementation and at the same time suitable for further analytical treatments. A detailed analysis of fully compatible ferroelectric domain str...

Piezoelectric properties of polyamide 11/NaNbO3 nanowire composites

Polyamide 11(PA 11)/sodium niobate nanowire (NW) 0–3 composites with different volume fractions of NWs were synthesized. The electric polarization (P ) was measured as a function of the applied electric field (E). The P –E hysteresis loop was used to work out the remanent polarization Pr of these materials. The dielectric permittivity and the piezoelectric strain constant were determined. Good ...

Effective mechanical properties of ‘‘fuzzy fiber’’ composites

In this paperwe investigate themechanical behavior of carbonfiber composites,where the carbonfibers are coated with radially aligned carbon nanotubes. For this purpose we develop a general micromechanics method for fiber composites, where fibers are coated with radially aligned microfibers (‘‘fuzzy fiber’’ composites). The mechanical effective properties are computed with a special extension of...

Effective medium approximations for anisotropic composites with arbitrary component orientation