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  <doc>
    <id>65704</id>
    <completedYear/>
    <publishedYear>2026</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
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    <title language="eng">Fiber optic sensors for SHM of solid bridges - BAM activities in work packages 2–5</title>
    <abstract language="eng">We report on wire break detection and traffic load monitoring using embedded, distributed fiber optic sensors as part of a concept for structural health monitoring of solid bridges.&#13;
Fiber optic measurements provide real-time data for identifying loads, structural responses, and damages. The development includes methods for data evaluation and information extraction from large DFOS datasets, contributing to the digital transformation of bridge infrastructure.</abstract>
    <enrichment key="eventName">FOSsure Jahrestreffen</enrichment>
    <enrichment key="eventPlace">Dresden, Germany</enrichment>
    <enrichment key="eventStart">18.03.2026</enrichment>
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    <author>Aleksander Wosniok</author>
    <author>Omar Ettaouaje</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Distributed fibre optic sensor (DFOS)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SHM</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bridge monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Distributed acoustic sensing</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.6 Faseroptische Sensorik</collection>
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  </doc>
  <doc>
    <id>65715</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>15</pageFirst>
    <pageLast>23</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>41</volume>
    <type>article</type>
    <publisherName>Faculty of Civil Engineering and Architecture, University of Nis</publisherName>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <title language="eng">Concrete performance assessment based on gas permeability testing</title>
    <abstract language="eng">Designing of structures with medium to high performance requirements is a demanding and challenging engineering task. Depending on the location and type of the planned structure, various pre-testing methods should be applied. In recent decades, there has been a focus on the durability of concrete. Concrete is a porous material with a relatively thin protective cover layer, making it vulnerable to the penetration of external agents such as carbon dioxide. Gas permeability testing (kT), a relatively new non-destructive method (NDT), should therefore be considered. This paper presents results of gas permeability testing on a set of larger concrete samples made under controlled conditions with some paroperty variations order to find initial kT parameters important for quality assurance.</abstract>
    <parentTitle language="eng">Journal of the Faculty of Civil Engineering and Architecture</parentTitle>
    <identifier type="issn">3009-4674</identifier>
    <identifier type="doi">10.62683/ZRGAF41.2</identifier>
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    <author>Jelena Bijeljic</author>
    <author>Ernst Niederleithinger</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Concrete</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Permeability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Durability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Torrent Tester</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.2 Zerstörungsfreie Prüfmethoden für das Bauwesen</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Circular Economy</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
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    <collection role="themenfelder" number="">Green Intelligent Building</collection>
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  </doc>
  <doc>
    <id>65730</id>
    <completedYear/>
    <publishedYear>2026</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
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    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Risserkennung an Spannbetonschwellen mittels Ultraschall und luftgekoppeltem Impakt-Echo</title>
    <abstract language="deu">Jährlich werden ca. 2,5 Millionen Betonschwellen auf den Bahnstrecken Deutschlands ausgetauscht. Ob ein Austausch notwendig ist, wird durch Sichtprüfung, also anhand äußerer Schäden, entschieden. Derzeit werden keine Verfahren eingesetzt, die Bahnschwellen auch auf nicht sichtbare Schäden überprüfen. Hier setzt das luftgekoppelte Impakt-Echo-Verfahren an, das innenliegende Schäden diagnostiziert. Mit Hilfe eines Überschall-Freistrahls wird die Eigenfrequenz der Schwelle angeregt. Ist diese durch Risse geschädigt, sinkt die Frequenz deutlich. Die Anregung erfolgt berührungslos und kontinuierlich, so dass auch Messungen in Bewegung und bei Überfahrten möglich werden.</abstract>
    <enrichment key="eventName">14. Fachtagung ZfP im Eisenbahnwesen</enrichment>
    <enrichment key="eventPlace">Erfurt, Germany</enrichment>
    <enrichment key="eventStart">17.03.2026</enrichment>
    <enrichment key="eventEnd">19.03.2026</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
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    <author>Christoph Strangfeld</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Spannbetonschwelle</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Rissdetektion</value>
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    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallprüfung</value>
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    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Impakt-Echo Verfahren</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Luftgekoppelte Impakt-Echo Anregung</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.2 Zerstörungsfreie Prüfmethoden für das Bauwesen</collection>
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    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Verkehrsinfrastrukturen</collection>
  </doc>
</export-example>
