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Characterization of acoustic and electromagnetic emission sources

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F04%3APU45224" target="_blank" >RIV/00216305:26220/04:PU45224 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Characterization of acoustic and electromagnetic emission sources

  • Original language description

    Cracks creation is accompanied by electric charge redistribution due to loosened chemical bonds. Electric charges on crack walls create dipole moments. Crack wall vibrations produce time dependent dipole moments and, consequently, electric and magnetic fields are generated. An electric signal is induced on metal electrodes. Information about the crack wall vibration was obtained from this signal analysis. For crack lengths below 1 mm the respective electrical signal has a frequency of over 2 MHz. In thiis paper the frequency analysis was performed in a frequency band of up to 5 MHz.

  • Czech name

    Charakteristika zdrojů akustické a elektromagnetické emise

  • Czech description

    Vznik trhlin je založen na rozdělení elektrického náboje v důsledku rušení chemických vazeb. Elektrické náboje na stěnách trhliny vytvářejí elektrický dipólový moment. V důsledku kmitání stěn trhliny vzniká časově proměnný dipólový moment a dochází ke generaci elektrického a magnetického pole.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

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

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2004

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Measurement Science and Technology

  • ISSN

    0957-0233

  • e-ISSN

  • Volume of the periodical

    15

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    5

  • Pages from-to

    973-977

  • UT code for WoS article

  • EID of the result in the Scopus database