ELECTRO-ULTRASONIC SPECTROSCOPY OF CONDUCTING SOLIDS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F06%3APU63877" target="_blank" >RIV/00216305:26220/06:PU63877 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26220/06:PU64452

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

ELECTRO-ULTRASONIC SPECTROSCOPY OF CONDUCTING SOLIDS

Original language description

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 frequenciesfE 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.

Czech name

Elektro-ultrazvuková spektroskopie vodivých látek

Czech description

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 frequenciesfE 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.

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GA102%2F06%2F0866" target="_blank" >GA102/06/0866: Nonlinear electroultrasonic spectroscopy of solids</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

9th European Conference of NDT

ISBN

3-931381

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

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Publisher name

DGZIP

Place of publication

Berlín, Německo

Event location

Berlin

Event date

Sep 25, 2006

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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