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  <doc>
    <id>59108</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>6</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>1</volume>
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    <publisherPlace>Mayen</publisherPlace>
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    <title language="eng">Guided Waves Propagation in Composite Overwrapped Pressure Vessel</title>
    <abstract language="eng">The application of composite overwrapped pressure vessels (COPV) to store hydrogen and other compressed gases, especially when operating at high pressures, imposed the need for an innovative and reliable approach to ensure the safe operation of the system. Continuous structural health monitoring (SHM) based on ultrasonic guided waves (GWs) is a promising approach due to the ability of the wave to propagate for long distances and go around complex structures, moreover the high sensitivity to various failure modes such as delamination, matrix cracking and debonding. In this study, we scrutinize the behavior of (GWs) within the COPV using a network of PZT elements that are used for excitation and sensing. A laser doppler vibrometer (LDV) was also used to scan the surface of the vessel in various directions. L(0,1) and L(0,2) were observed in the captured signal. The L(0, 2) appeared to be a dominant mode in the COPV and was capable of propagating along the entire length and maintaining a good signal-to-noise ratio. The L(0,2) mode maintained the same phase velocity when it is captured at various excitation angles (0, 45, and 90 degrees). The reduced effect of the orthotropy of the materials on the propagating waves is an important result as it will reduce the complexity in data processing when performing damage identification.</abstract>
    <parentTitle language="eng">Research and review journal of nondestructive testing</parentTitle>
    <identifier type="issn">2941-4989</identifier>
    <identifier type="doi">10.58286/28068</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-591081</identifier>
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    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,7,29]],"date-time":"2023-07-29T17:41:05Z","timestamp":1690652465900},"reference-count":0,"publisher":"NDT.net GmbH &amp; Co. KG","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ReJNDT"],"abstract":"&lt;jats:p&gt;\nThe application of composite overwrapped pressure vessels (COPV) to store hydrogen and other compressed gases, especially when operating at high pressures, imposed the need for an innovative and reliable approach to ensure the safe operation of the system. Continuous structural health monitoring (SHM) based on ultrasonic guided waves (GWs) is a promising approach due to the ability of the wave to propagate for long distances and go around complex structures, moreover the high sensitivity to various failure modes such as delamination, matrix cracking and debonding. In this study, we scrutinize the behavior of (GWs) within the COPV using a network of PZT elements that are used for excitation and sensing. A laser doppler vibrometer (LDV) was also used to scan the surface of the vessel in various directions. L(0,1) and L(0,2) were observed in the captured signal. The L(0, 2) appeared to be a dominant mode in the COPV and was capable of propagating along the entire length and maintaining a good signal-to-noise ratio. The L(0,2) mode maintained the same phase velocity when it is captured at various excitation angles (0, 45, and 90 degrees). The reduced effect of the orthotropy of the materials on the propagating waves is an important result as it will reduce the complexity in data processing when performing damage identification.\n&lt;\/jats:p&gt;","DOI":"10.58286\/28068","type":"journal-article","created":{"date-parts":[[2023,7,29]],"date-time":"2023-07-29T17:17:37Z","timestamp":1690651057000},"source":"Crossref","is-referenced-by-count":0,"title":["Guided Waves Propagation in Composite Overwrapped Pressure Vessel"],"prefix":"10.58286","volume":"1","author":[{"given":"Samir","family":"Mustapha","sequence":"first","affiliation":[]},{"name":"American University of Beirut","sequence":"first","affiliation":[]},{"given":"Bengisu","family":"Yilmaz","sequence":"additional","affiliation":[]},{"given":"Jan","family":"Heimann","sequence":"additional","affiliation":[]},{"given":"Jens","family":"Prager","sequence":"additional","affiliation":[]},{"given":"Blaz","family":"Brence","sequence":"additional","affiliation":[]},{"name":"Kaunas University of Technology (KTU)","sequence":"additional","affiliation":[]},{"name":"American University of Beirut","sequence":"additional","affiliation":[]},{"name":"BAM Federal Institute for Materials Research and Testing","sequence":"additional","affiliation":[]},{"name":"American University of Beirut","sequence":"additional","affiliation":[]}],"member":"37050","published-online":{"date-parts":[[2023,8]]},"container-title":["Research and Review Journal of Nondestructive Testing"],"original-title":[],"deposited":{"date-parts":[[2023,7,29]],"date-time":"2023-07-29T17:17:58Z","timestamp":1690651078000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ndt.net\/search\/docs.php3?id=28068"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,8]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,8]]}},"URL":"http:\/\/dx.doi.org\/10.58286\/28068","relation":{},"ISSN":["2941-4989"],"issn-type":[{"value":"2941-4989","type":"electronic"}],"published":{"date-parts":[[2023,8]]}}}</enrichment>
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    <enrichment key="eventName">13th. European Conference on Non-Destructive Testing (ECNDT)</enrichment>
    <enrichment key="eventPlace">Lisbon, Portugal</enrichment>
    <enrichment key="eventStart">03.07.2023</enrichment>
    <enrichment key="eventEnd">07.07.2023</enrichment>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>S. Mustapha</author>
    <author>Bengisu Yilmaz</author>
    <author>Jan Heimann</author>
    <author>Blaz Brence</author>
    <author>Jens Prager</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Composite Overwrapped Pressure Vessels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Guided Waves</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser Doppler Vibrometer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural Health Monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sensors Placement</value>
    </subject>
    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.4 Akustische und elektromagnetische Verfahren</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Chemie und Prozesstechnik</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Wasserstoff</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/59108/ECNDT2023_PAPER_122.pdf</file>
  </doc>
  <doc>
    <id>62523</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>031007-1</pageFirst>
    <pageLast>031007-13</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>8</volume>
    <type>article</type>
    <publisherName>The American Society of Mechanical Engineers (ASME)</publisherName>
    <publisherPlace>New York, USA</publisherPlace>
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    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
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    <title language="eng">Guided Waves in Composite Overwrapped Pressure Vessels and Considerations for Sensor Placement Toward Structural Health Monitoring—An Experimental Study</title>
    <abstract language="eng">The utilization of composite overwrapped pressure vessels (COPVs) to store hydrogen, especially at high pressures, is gaining more popularity due to their lightweight design and high storage density, offering significant economic advantages. However, the presence of material defects or fatigue can lead to critical failures, requiring an innovative and robust approach to ensure safe operation and system integrity. Developing a continuous structural health monitoring (SHM) system for COPVs can provide comprehensive realtime information about their condition, facilitating a shift away from periodic inspections.&#13;
This study scrutinizes the behavior of guided waves (GWs) within COPVs to design a sensor ,network for damage detection and localization. First, the dispersive and multimodal propagation behavior of GWs is experimentally investigated. Subsequently, important parameters for the network design are derived and finally a sensor network consisting of 15 piezoelectric transducers is designed to cover the entire cylindrical area. The effectiveness is then evaluated experimentally by placing artificial defects on the surface of the COPV. The multi-layered dataset of GW signals was analyzed using both commonly used ultrasonic features (e.g., amplitude, frequency, time of flight) as well as statistical features (kurtosis, skewness, variance, etc.). These features were utilized to compute a damage index, and the effectiveness of the detection performance was assessed using receiver operating characteristic curves. It can be seen that some features are more sensitive and robust under varying experimental conditions. The results show that ultrasonic GW SHM system is a promising solution for damage detection and localization in COPVs.</abstract>
    <parentTitle language="eng">Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems</parentTitle>
    <identifier type="doi">10.1115/1.4067667</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-625239</identifier>
    <identifier type="issn">2572-3898</identifier>
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    <enrichment key="date_peer_review">16.07.2025</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Jan Heimann</author>
    <author>Samir Mustapha</author>
    <author>Bengisu Yilmaz</author>
    <author>Jens Prager</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Composite Overwrapped Pressure Vessels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Guided Waves</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural Health Monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sensors Placement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Damage Detection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Damage Localization</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Elastic Wave</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Testing Methodologies</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonics</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.4 Akustische und elektromagnetische Verfahren</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Wasserstoff</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/62523/NDE-24-1042.pdf</file>
  </doc>
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