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  <doc>
    <id>1098</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2008-12-01</completedDate>
    <publishedDate>2008-12-01</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Development and test of a numerical model for pulse thermography in civil engineering</title>
    <abstract language="eng">Pulse thermography of concrete structures is used in civil engineering for detecting voids, honeycombing and delamination. The physical situation is readily modeled by Fourier's law. Despite the simplicity of the PDE structure, quantitatively realistic numerical 3D simulation faces two major obstacles. First, the short heating pulse induces a thin boundary layer at the heated surface which encapsulates all information and therefore has to be resolved faithfully. Even with adaptive mesh refinement techniques, obtaining useful accuracies requires an unsatisfactorily fine discretization. Second, bulk material parameters and boundary conditions are barely known exactly. We address both issues by a semi-analytic reformulation of the heat transport problem and by parameter identification. Numerical results are compared with measurements of test specimens.</abstract>
    <identifier type="serial">08-45</identifier>
    <identifier type="issn">1438-0064</identifier>
    <identifier type="opus3-id">1135</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-10980</identifier>
    <enrichment key="SourceTitle">Appeared in: Heat and Mass Transfer: Volume 46, Issue 11(2010), Page 1419</enrichment>
    <author>Martin Weiser</author>
    <submitter>unknown unknown</submitter>
    <author>Mathias Röllig</author>
    <author>Ralf Arndt</author>
    <author>Bodo Erdmann</author>
    <series>
      <title>ZIB-Report</title>
      <number>08-45</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>finite element model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>KARDOS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pulse thermography</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>civil engineering</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>inverse solution</value>
    </subject>
    <collection role="ddc" number="510">Mathematik</collection>
    <collection role="pacs" number="44.05.+e">Analytical and numerical techniques</collection>
    <collection role="pacs" number="44.20.+b">Boundary layer heat flow</collection>
    <collection role="msc" number="65M50">Mesh generation and refinement</collection>
    <collection role="msc" number="80M10">Finite element methods</collection>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
    <collection role="institutes" number="compmed">Computational Medicine</collection>
    <collection role="persons" number="weiser">Weiser, Martin</collection>
    <collection role="projects" number="BAM-Thermography">BAM-Thermography</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/1098/ZR_08_45.pdf</file>
  </doc>
</export-example>
