Electro Ultrasonic Spectroscopy of Cermet Thick Films

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

Electro Ultrasonic Spectroscopy of Cermet Thick Films

Popis výsledku v původním jazyce

The electro-ultrasonic spectroscopy is non-destructive testing method for cermet resistors. This method can be used as a diagnostic tool for the quality and reliability assessment. AC current varying with frequency fE and the ultrasonic signal varying with frequency fU are applied on the conducting sample and a new intermodulation signal on the frequency fm given by the superposition or subtraction of exciting frequencies is measured on the sample. The sample resistance is influenced by the ultrasonic signal. The ultrasonic signal changes the contact area between the conducting grains in the sample structure and then resistance is modulated by the frequency of ultrasonic excitation. The electrical charge and also the electrical current flowing throughthe sample structure are conserved. In case the contact area between the conducting grains is changing then the current density is changed. This leads to the resistivity change of measured structure. We suppose that for the sample with mo

Název v anglickém jazyce

Electro Ultrasonic Spectroscopy of Cermet Thick Films

Popis výsledku anglicky

The electro-ultrasonic spectroscopy is non-destructive testing method for cermet resistors. This method can be used as a diagnostic tool for the quality and reliability assessment. AC current varying with frequency fE and the ultrasonic signal varying with frequency fU are applied on the conducting sample and a new intermodulation signal on the frequency fm given by the superposition or subtraction of exciting frequencies is measured on the sample. The sample resistance is influenced by the ultrasonic signal. The ultrasonic signal changes the contact area between the conducting grains in the sample structure and then resistance is modulated by the frequency of ultrasonic excitation. The electrical charge and also the electrical current flowing throughthe sample structure are conserved. In case the contact area between the conducting grains is changing then the current density is changed. This leads to the resistivity change of measured structure. We suppose that for the sample with mo

Druh

D - Stať ve sborníku

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

32nd International Spring Seminar on Electronics Technology

ISBN

978-1-4244-4260-7

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

Neuveden

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

13. 5. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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