Electro Ultrasonic Spectroscopy of Cermet Thick Films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F09%3APU81550" target="_blank" >RIV/00216305:26220/09:PU81550 - isvavai.cz</a>

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 Cermet Thick Films

Original language description

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

Czech name

Electro Ultrasonic Spectroscopy of Cermet Thick Films

Czech description

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

Type

D - Article in proceedings

CEP classification

BE - Theoretical physics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Article name in the collection

32nd International Spring Seminar on Electronics Technology

ISBN

978-1-4244-4260-7

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

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Publisher name

Neuveden

Place of publication

Brno

Event location

Brno

Event date

May 13, 2009

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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