12 Result(s)
within
F.G. Shin
Characterization and Evaluation of Materials
Crystallography and Scattering Methods
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Article
New explicit formulas for the effective piezoelectric coefficients of binary 0-3 composites
The explicit formula for the effective dielectric constant of binary 0-3 composites (Poon and Shin, J. Mat. Sc. 39 (2004) 1277–1281) is extended into two explicit formulas for the prediction of the elastic proper...
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Article
Dependence of polarization offset on driving frequency, film thickness and composition gradient in compositionally graded ferroelectric materials
We studied theoretically the effects of frequency and film thickness on the charge offset of the compositionally graded ferroelectric films. The time-dependent space-charge-limited conductivity has been used t...
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Article
Effect of electrical conductivity on poling and the dielectric, pyroelectric and piezoelectric properties of ferroelectric 0-3 composites
We have investigated the effects of electrical conductivity of the constituents on the poling behavior, dielectric, pyroelectric and piezoelectric properties of ferroelectric 0-3 composites. Modeling of polari...
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Article
A simple explicit formula for the effective dielectric constant of binary 0-3 composites
We have derived a simple, analytic formula for the prediction of the effective dielectric constant of binary 0-3 composite materials. In comparison with a popular formula in the field (Jayasundere and Smith [1...
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Article
Effective conductivity of a composite of poly-dispered spherical particles in a linear continuum
Rayleigh's method is used to find the electric potentials of a composite of poly-dispered spherical particles in a linear continuum in an external electric field. Based on the solutions of potentials, analytic...
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Article
Statistical spherical cell model for the elastic properties of particulate-filled composite materials
The single spherical cell model of F. J. Guild et al. (J. Mater. Sci. Lett. 13 (1994) 10) is extended to take into account the statistical spatial distribution of the inclusions in particulate-filled composite ma...
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Article
A dielectric binary mixture formula with an interaction term
A new dielectric binary mixture formula that generalizes Beer's equation is derived by imposing an effective medium theory on the simple rule of mixtures modified by the addition of an interaction term. Dielec...
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Article
Pulse response functions of dielectric susceptibility
As dielectric response in the time domain is becoming increasingly of experimental relevance and as such responses for quite a number of well-established susceptibility formulae are still unknown, we examine i...
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Article
Analyses of the mechanical properties and microstructure of bamboo-epoxy composites
Bamboo reinforced epoxy possesses reasonably good properties to waarrant its use as a structural material, and is fabricated by utilizing bamboo, an abundant material resource, in the technology of fibre compo...
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Article
Temperature variation of dielectric loss of silver-thermosetting polyester composites at audio frequencies
Dielectric loss of a metallopolymer system consisting of silver-coated glass spheres dispersed in unsaturated polyester is investigated at audio frequencies in the temperature range −180 to 45° C. The effect o...
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Article
Dielectric constant of silver-thermosetting polyester composites
The dielectric constant of a conductor-insulator composite is measured and no percolation threshold is observed up toV=45%, whereV is the volume fraction of conducting filler. The composite is fabricated by dispe...
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Article
Direct current electrical conductivity of silver-thermosetting polyester composites
The electrical conduction of composites made from unsaturated polyester with silver powder and silver-coated glass spheres is investigated. The samples are generally nonohmic and exhibit switching effects. The...
