Cracks detection in Mg alloy by electro-ultrasonic spectroscopy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F11%3APU90198" target="_blank" >RIV/00216305:26220/11:PU90198 - isvavai.cz</a>

Alternative codes found

RIV/60162694:G43__/11:00499055

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Cracks detection in Mg alloy by electro-ultrasonic spectroscopy

Original language description

New non-destructive testing (NDT) method is based on the effect of the ultrasonic vibrations on the electron transport in samples with macroscopic defects as cracks or defect centers affecting electrical conductivity. On the frequency given by the subtraction of exciting frequencies new intermodulation signal appears. Its value is given by electric resistance modulation by the defects and un-homogeneities in the sample structure. In our experiment we used the ultrasonic actuator with frequency fU when the period of wave is longer than the dielectric relaxation time in analyzed sample. In this case the effects of electron bunching by ultrasonic wave are negligible. The ultrasonic wave length is much larger than the electrons mean free path and the waveperiod is much longer than the mean free time among the electrons collision with scattering centers and defects. Then the electron transport is described by the quasi-steady state transport equation in one-electron approximation. Because

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BE - Theoretical physics

OECD FORD branch

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Project

<a href="/en/project/GA106%2F07%2F1393" target="_blank" >GA106/07/1393: Nonlinear ultrasonic spectroscopy of magnesium metallic composits and alloys</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Key Engineering Materials

ISSN

1662-9795

e-ISSN

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Volume of the periodical

465

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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