Publication result detail

Fracture related electromagnetic emission measurement and excess noise analysis of reinforced composites

MACKŮ, R.; ŠICNER, J.; KOKTAVÝ, P.; TRČKA, T.

Original Title

Fracture related electromagnetic emission measurement and excess noise analysis of reinforced composites

English Title

Fracture related electromagnetic emission measurement and excess noise analysis of reinforced composites

Type

WoS Article

Original Abstract

Electrical properties of several types of reinforced composites were investigated. AC and DC resistivities were measured, and the frequency behavior along with parasitic components was put together in order to create equivalent electrical circuit. It was used for electrical noise measurement corrections. It turns out that samples produces high level Johnson-Nyquist noise and 1/f noise when current bias is applied. We have discovered that electrical contact metallization affects directly the 1/f noise and the bulk material is responsible for white-like Johnson-Nyquist noise. We managed to get information about the suitability of the various metals in view of noise generation and the silver conductive pint seems to be proper chose. Finally, the electromagnetic emission signal, which in turn depends on cracks, was measured and comparison with conventional acoustic emission was put forward.

English abstract

Electrical properties of several types of reinforced composites were investigated. AC and DC resistivities were measured, and the frequency behavior along with parasitic components was put together in order to create equivalent electrical circuit. It was used for electrical noise measurement corrections. It turns out that samples produces high level Johnson-Nyquist noise and 1/f noise when current bias is applied. We have discovered that electrical contact metallization affects directly the 1/f noise and the bulk material is responsible for white-like Johnson-Nyquist noise. We managed to get information about the suitability of the various metals in view of noise generation and the silver conductive pint seems to be proper chose. Finally, the electromagnetic emission signal, which in turn depends on cracks, was measured and comparison with conventional acoustic emission was put forward.

Keywords

Reinforced composites; electromagnetic emission; excess noise; contact noise.

Key words in English

Reinforced composites; electromagnetic emission; excess noise; contact noise.

Authors

MACKŮ, R.; ŠICNER, J.; KOKTAVÝ, P.; TRČKA, T.

RIV year

2015

Released

03.06.2014

Publisher

Elsevier

ISBN

2211-8128

Periodical

Procedia Materials Science

Volume

2014

Number

3

State

Kingdom of the Netherlands

Pages from

116

Pages to

121

Pages count

6

BibTex

@article{BUT109253,
  author="Robert {Macků} and Jiří {Šicner} and Pavel {Koktavý} and Tomáš {Trčka}",
  title="Fracture related electromagnetic emission measurement and excess noise analysis of reinforced composites",
  journal="Procedia Materials Science",
  year="2014",
  volume="2014",
  number="3",
  pages="116--121",
  doi="10.1016/j.mspro.2014.06.022",
  issn="2211-8128"
}