Detail publikačního výsledku

Study of crack behaviour during mechanical stressing of composite materials

KOKTAVÝ, B.; KOKTAVÝ, P.; GRMELA, L.

Originální název

Study of crack behaviour during mechanical stressing of composite materials

Anglický název

Study of crack behaviour during mechanical stressing of composite materials

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The phenomenon of stochastic electromagnetic emission (EME) from solids is based on the generation of an electromagnetic field accompanying the mechanical excitation of the solids in question. Our experiments were carried out on a composite dielectric material, consisting of fibrous glass reinforcement which was bound with resin-based binding agents. The time development of a voltage u(t) across a load resistor being connected in series with a sensing capacitor was measured. The time behaviour of the product of the electric charge and its velocity q(t)v(t) can be determined from the voltages u(t). The crack generation process may be split into two phases. The first phase includes the crack generation. In this phase, both this quantities are varying. During the second phase, the crack walls are moving while the charge they are carrying is virtually stabilized. This method is a convenient tool for study of microcracks arising in stressed solid dielectric materials.

Anglický abstrakt

The phenomenon of stochastic electromagnetic emission (EME) from solids is based on the generation of an electromagnetic field accompanying the mechanical excitation of the solids in question. Our experiments were carried out on a composite dielectric material, consisting of fibrous glass reinforcement which was bound with resin-based binding agents. The time development of a voltage u(t) across a load resistor being connected in series with a sensing capacitor was measured. The time behaviour of the product of the electric charge and its velocity q(t)v(t) can be determined from the voltages u(t). The crack generation process may be split into two phases. The first phase includes the crack generation. In this phase, both this quantities are varying. During the second phase, the crack walls are moving while the charge they are carrying is virtually stabilized. This method is a convenient tool for study of microcracks arising in stressed solid dielectric materials.

Klíčová slova

Crack, electric charge, electromagnetic emission, acoustic emission

Klíčová slova v angličtině

Crack, electric charge, electromagnetic emission, acoustic emission

Autoři

KOKTAVÝ, B.; KOKTAVÝ, P.; GRMELA, L.

Vydáno

15.11.2007

Nakladatel

Z. Novotný, Ing., CSc.

Místo

Brno

ISBN

978-80-7355-078-3

Kniha

New trends in physics

Edice

-

Strany od

65

Strany do

68

Strany počet

4

BibTex

@inproceedings{BUT25502,
  author="Bohumil {Koktavý} and Pavel {Koktavý} and Lubomír {Grmela}",
  title="Study of crack behaviour during mechanical stressing of composite materials",
  booktitle="New trends in physics",
  year="2007",
  series="-",
  number="první",
  pages="65--68",
  publisher="Z. Novotný, Ing., CSc.",
  address="Brno",
  isbn="978-80-7355-078-3"
}