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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">NDT World</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">NDT World</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>В мире неразрушающего контроля</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">1609-3178</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">14590</article-id>
   <article-id pub-id-type="doi">10.12737/23496</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>НК композиционных материалов</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>NDT of Composites</subject>
    </subj-group>
    <subj-group>
     <subject>НК композиционных материалов</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Resonant Defects: A New Approach to Highly-Sensitive Ultrasound-Activated NDT Techniques</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Резонансные дефекты: новый подход к повышению чувствительности методов НК с использованием ультразвуковой стимуляции дефектов</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Солодов</surname>
       <given-names>Игорь Юрьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Solodov</surname>
       <given-names>Igor Юрьевич</given-names>
      </name>
     </name-alternatives>
     <email>igor.solodov@ikt.uni-stuttgart.de</email>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Кройцбрук</surname>
       <given-names>Марк </given-names>
      </name>
      <name xml:lang="en">
       <surname>Kreutzbruck</surname>
       <given-names>Mark </given-names>
      </name>
     </name-alternatives>
    </contrib>
   </contrib-group>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2016-12-13T00:00:00+03:00">
    <day>13</day>
    <month>12</month>
    <year>2016</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2016-12-13T00:00:00+03:00">
    <day>13</day>
    <month>12</month>
    <year>2016</year>
   </pub-date>
   <volume>19</volume>
   <issue>4</issue>
   <fpage>8</fpage>
   <lpage>12</lpage>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/14590/view">https://zh-szf.ru/en/nauka/article/14590/view</self-uri>
   <abstract xml:lang="ru">
    <p>Наличие дефекта приводит к локальному изменению упругости для определённой массы материала в области дефекта, что обуславливает появление некоторой собственной частоты колебаний дефектной области. При совпадении ультразвуковой частоты возбуждения с собственной частотой дефекта наблюдается явление резонанса, при котором амплитуда колебаний резко возрастает исключительно в области дефекта. Этим эффект локального резонанса дефекта отличается от резонанса всего образца, при котором усиливаются колебания в различных областях всего образца из-за образования в нём стоячей волны. Иными словами, эффект локального резонанса позволяет направить ультразвуковую энергию волны непосредственно в область дефекта и осуществить его селективную стимуляцию. Резонанс значительно увеличивает амплитуду колебаний, что существенно повышает чувствительность обнаружения и визуализации дефектов с использованием различных методов, использующих ультразвуковую стимуляцию (лазерная виброметрия, ультразвуковая термография и шерография).</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The presence of a defect leads to a local decrease in rigidity for a certain mass of the material and therefore manifests in a particular characteristic frequency of the defect. A frequency match between the driving ultrasonic wave and this characteristic frequency provides a Local Defect Resonance (LDR) and results in efficient energy delivery from the wave into the defect. In this paper, such a selective ultrasonic activation of resonant defects is suggested to enhance nonlinear ultrasonic, optical and thermal defect responses. Multiple case studies demonstrate that the resonant excitation of a defect results in a high local vibration and enhancement of sensitivity in ultrasonic NDT and imaging of defects via laser vibrometry, thermosonics, nonlinearity and shearography readily measurable even for a few mW of ultrasonic power. The LDR-based NDT methods require much lower ultrasonic power to activate the defects that makes it possible to avoid high- power ultrasonic instrumentation.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>локальный резонанс дефекта</kwd>
    <kwd>ультразвук</kwd>
    <kwd>вибрационный резонанс</kwd>
    <kwd>акустический резонанс</kwd>
    <kwd>шерография</kwd>
    <kwd>акустические волны</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>local defect resonance</kwd>
    <kwd>ultrasonics</kwd>
    <kwd>vibration resonance</kwd>
    <kwd>acoustic resonance</kwd>
    <kwd>shearography</kwd>
    <kwd>acoustic waves</kwd>
   </kwd-group>
  </article-meta>
 </front>
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  <p></p>
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 <back>
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