Detail publikačního výsledku

First Principles Study of Vanadium Based Composites Reinforced by Tungsten Nano-fibers

ČERNÝ, M.; POKLUDA, J.

Originální název

First Principles Study of Vanadium Based Composites Reinforced by Tungsten Nano-fibers

Anglický název

First Principles Study of Vanadium Based Composites Reinforced by Tungsten Nano-fibers

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Calculations of elastic moduli and theoretical uniaxial strength of unidirectional composite having continuous nano-fiber reinforcements are performed using ab initio method. All quantities are computed from the dependence of crystal energy on a suitable deformation parameter. Results for tungsten nano-fibers in vanadium matrix are presented as a particular example of the analysis. The dependence of the computed composite elastic moduli on the atomic concentration of W (nearly corresponding to the volume fraction of fibers) is compared with the rule of mixture for an ideal composite. Results show that validity of the linear mixture rule is theoretically justified for most of them. On the other hand, computed values of theoretical strength exhibit a simple increasing dependence on atomic concentration of W only up to about 70% concentration. Then the values become saturated or even slightly decrease.

Anglický abstrakt

Calculations of elastic moduli and theoretical uniaxial strength of unidirectional composite having continuous nano-fiber reinforcements are performed using ab initio method. All quantities are computed from the dependence of crystal energy on a suitable deformation parameter. Results for tungsten nano-fibers in vanadium matrix are presented as a particular example of the analysis. The dependence of the computed composite elastic moduli on the atomic concentration of W (nearly corresponding to the volume fraction of fibers) is compared with the rule of mixture for an ideal composite. Results show that validity of the linear mixture rule is theoretically justified for most of them. On the other hand, computed values of theoretical strength exhibit a simple increasing dependence on atomic concentration of W only up to about 70% concentration. Then the values become saturated or even slightly decrease.

Klíčová slova

ab inito calculations, nano-composites, theoretical strength

Klíčová slova v angličtině

ab inito calculations, nano-composites, theoretical strength

Autoři

ČERNÝ, M.; POKLUDA, J.

Vydáno

13.11.2006

Nakladatel

VUTIUM

Místo

FSI VUT Brno

ISBN

80-214-3331-0

Kniha

Nano 06

Strany od

297

Strany do

300

Strany počet

4

BibTex

@inproceedings{BUT24093,
  author="Miroslav {Černý} and Jaroslav {Pokluda}",
  title="First Principles Study of Vanadium Based Composites Reinforced by Tungsten Nano-fibers",
  booktitle="Nano 06",
  year="2006",
  pages="297--300",
  publisher="VUTIUM",
  address="FSI VUT Brno",
  isbn="80-214-3331-0"
}