Detail publikace

ELECTRO-ULTRASONIC SPECTROSCOPY OF CONDUCTING SOLIDS

ŠIKULA, J., HÁJEK, K., SEDLÁKOVÁ, V., HEFNER, Š.

Originální název

ELECTRO-ULTRASONIC SPECTROSCOPY OF CONDUCTING SOLIDS

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The paper presents new principle of non-destructive testing of conducting solids. This method is based on ultrasonic phonons interaction with electrons in the nonlinear region caused by defect (“defect cased nonlinearity”). Tested sample is excited by harmonic AC electrical signal with frequency fE and ultrasonic wave with frequency fU. New harmonic signal with frequency fi is created on the defect caused nonlinearity. The frequency fi is given by the superposition or subtraction of exciting frequencies fE and fU. The advantage of this method consists in detection of electrical signal with frequency different from frequencies of excitation signals. Two ways for realisation of this principle are compared and ways to increasing of sensitivity are shown. The theoretical sensitivity of this method and its limitation by parasitic effect is also discussed. The usability and possibility of minimisation of parasitic effects are confirmed experimentally.

Klíčová slova v angličtině

Electro-ultrasonic spectroscopy, conducting solids

Autoři

ŠIKULA, J., HÁJEK, K., SEDLÁKOVÁ, V., HEFNER, Š.

Rok RIV

2006

Vydáno

1. 1. 2006

Nakladatel

DGZIP

Místo

Berlín, Německo

ISBN

3-931381

Kniha

9th European Conference of NDT

Strany od

Fr.1.5.2

Strany počet

8