Elastic constant anisotropy and disclination interaction in nematic polymers II. Effect of disclination interaction

The composite ceramics is composed of fiber-eutectics, transformation particles and matrix particles. First, the recessive expression between the effective stress in fiber-eutectic and the flexibility increment tensor is obtained according to the four-phase model. Second, the analytical formula which contains elastic constant of the fiber-eutectic is obtained applying Taylor’s formula. The eutectic is transverse isotropy, so there are five elastic constants. Third, the effective elastic constants of composite ceramics are predicted. The result shows that the elastic modulus of composite ceramic is reduced with the increase of fibers fraction and fibers diameter.

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Anisotropic viscoelasticity of side chain nematic polymers

Journal of Non-Newtonian Fluid Mechanics ◽

10.1016/0377-0257(95)01348-y ◽

1995 ◽

Vol 58 (2-3) ◽

pp. 131-160 ◽

Cited By ~ 5

Author(s):

Alejandro D Rey

Keyword(s):

Side Chain ◽

Nematic Polymers

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Elastic constant degradation from microcracking in ceramic-ceramic composites cycled by slow thermal loading

Materials Science and Engineering A ◽

10.1016/0921-5093(94)90387-5 ◽

1994 ◽

Vol 188 (1-2) ◽

pp. 317-325 ◽

Cited By ~ 5

Author(s):

Arvind Sinha ◽

Klod Kokini ◽

K.J. Bowman

Keyword(s):

Elastic Constant ◽

Thermal Loading ◽

Ceramic Composites

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Vertical self-organization of Ge1−xMnx nanocolumn multilayers grown on Ge(001) substrates

Modern Physics Letters B ◽

10.1142/s0217984916502699 ◽

2016 ◽

Vol 30 (20) ◽

pp. 1650269 ◽

Cited By ~ 3

Author(s):

Thi Giang Le ◽

Minh Tuan Dau

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

High Resolution ◽

Molecular Beam Epitaxy ◽

Elastic Constant ◽

Structural Properties ◽

Molecular Beam ◽

Self Organization ◽

Transmission Electron ◽

2D Model

High-resolution transmission electron microscopy (HR-TEM) has been used to investigate the structural properties of GeMn/Ge nanocolumns multilayer samples grown on Ge(001) substrates by means of molecular beam epitaxy (MBE) system. Four bilayers with the spacer thickness in the range between 6 nm and 15 nm and 10 periods of bilayers of Ge[Formula: see text]Mn[Formula: see text]/Ge nanocolumn are presented. A simplified 2D model based on the theory of elastic constant interactions has been used to provide reasonable explanations to the vertical self-organization of GeMn nanocolumns in multilayers.

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