NDT vodivých látek pomocí elektro-ultrazvukové spektroskopie

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

NDT of Conducting Solids by Electro-Ultrasonic Spectroscopy

Popis výsledku v původním jazyce

The paper presents new NDT method of conducting solids. Tested sample is excited by harmonic electrical and ultrasonic signals with different frequencies. On the defect caused non linearity new harmonic signal is created with frequency given by subtraction of exciting frequencies fE and fU. It was found that the amplitude of the intermodulation component Ui is linear function of electrical excitation and quadratic function of ultrasonic excitation. High sensitivity of this method follows from the fact that the signal giving information on tested sample quality has frequency different from exciting signals. The signal to noise ratio and high sensitivity for NDT analyses is based on the application of special electrical filters. Experimental verificationof this method was performed on the samples of aluminum and dural plates and on the thick conducting films, both without and with cracks prepared artificially.

Název v anglickém jazyce

NDT of Conducting Solids by Electro-Ultrasonic Spectroscopy

Popis výsledku anglicky

The paper presents new NDT method of conducting solids. Tested sample is excited by harmonic electrical and ultrasonic signals with different frequencies. On the defect caused non linearity new harmonic signal is created with frequency given by subtraction of exciting frequencies fE and fU. It was found that the amplitude of the intermodulation component Ui is linear function of electrical excitation and quadratic function of ultrasonic excitation. High sensitivity of this method follows from the fact that the signal giving information on tested sample quality has frequency different from exciting signals. The signal to noise ratio and high sensitivity for NDT analyses is based on the application of special electrical filters. Experimental verificationof this method was performed on the samples of aluminum and dural plates and on the thick conducting films, both without and with cracks prepared artificially.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the International Symposium 18th ISNA 2008

ISBN

978-0-7354-0544-8

ISSN

0094-243X

e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

American Institute of Physic

Místo vydání

USA

Místo konání akce

Stockholm, Švédsko

Datum konání akce

1. 1. 2008

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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