<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>35743</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>6</pageFirst>
    <pageLast>9</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4/2016</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Monitoring TIG welding using Infrared Thermography - Simulations and Experiments</title>
    <abstract language="eng">In the current work a 3D model has been developed to predict the thermal cycles during the Tungsten Inert Gas welding of Aluminum 2219. This paper describes the step by step procedure adopted to get the actual cooling rate during the TIG welding process both experimentally and numerically. The model was developed in the COMSOL Finite Element Package and considered a Gaussian heat distribution. The developed model then validated using the experimental data collected in field experiments on actual large propellant tanks. Temperature measurements were performed using Infrared Camera. Results show a close comparison between model and experiment.</abstract>
    <parentTitle language="pol">Przeglad Elektrotechniczny</parentTitle>
    <identifier type="doi">10.15199/48.2016.04.02</identifier>
    <identifier type="issn">0033-2097</identifier>
    <author>Sreedhar Unnikrishnakurup</author>
    <author>C. V. Krishnamurthy</author>
    <author>Krishnan Balasubramaniam</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Image Analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrared Thermography</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Online Monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Finite Element Method</value>
    </subject>
    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>38915</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>8</pageLast>
    <pageNumber/>
    <edition/>
    <issue>7</issue>
    <volume>21</volume>
    <type>article</type>
    <publisherName>NDT.net</publisherName>
    <publisherPlace>Kirchwald</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Application of infrared thermography technique for the monitoring of cold metal transfer (CMT) joining of aluminium to galvanized steel</title>
    <abstract language="eng">In this study, the feasibility of using non-contact Infrared thermography as a potential tool to monitor the CMT welding process is explored. The presence of internal defects such as porosity, lack of filler material deposition and formation of improper weld bead produce perturbations in the surface temperature which can be identified using an Infrared thermography technique. We present recent results obtained from online monitoring of the the dissimilar joining using CMT weld brazing of Aluminum and Steel using a transmission mode measurement approach. The effect of loss of zinc coating on the weldability of the cold metal transfer joining of aluminum to galvanised steel was investigated. A correlation between measured online thermal indications with the weld anomalies is successfully attempted and the results are compared with the conventional post-weld NDT inspection methods.</abstract>
    <parentTitle language="eng">The e-journal of nondestructive testing &amp; ultrasonics</parentTitle>
    <identifier type="url">http://ndt.net/?id=19475</identifier>
    <identifier type="issn">1435-4934</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-389155</identifier>
    <enrichment key="eventName">19th World Conference on Non-Destructive Testing (WCNDT 2016)</enrichment>
    <enrichment key="eventPlace">Munich, Germany</enrichment>
    <enrichment key="eventStart">13 June 2016</enrichment>
    <enrichment key="eventEnd">17 June 2016</enrichment>
    <licence>Creative Commons - Namensnennung - Keine Bearbeitung 3.0</licence>
    <author>Sreedhar Unnikrishnakurup</author>
    <author>R. T. Kidangan</author>
    <author>N. P. Vengara</author>
    <author>Krishnan Balasubramaniam</author>
    <author>P. Rajagopal</author>
    <author>K. V. Phani Prabhakar</author>
    <author>G. Padmanabham</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrared thermography</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CMT welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Weld defects</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Online monitoring</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</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>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/38915/Unnikrishnakurup_et_al - WCNDT 2016.pdf</file>
  </doc>
  <doc>
    <id>27631</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>53</pageFirst>
    <pageLast>59</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>10</volume>
    <type>article</type>
    <publisherName>ISNT</publisherName>
    <publisherPlace>Chennai</publisherPlace>
    <creatingCorporation>Indian Society for Non-Destructive Testing</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Detection of honeycomb defects in reinforced concrete structures using acoustic pulse-echo methods and wavelet transforms</title>
    <abstract language="eng">Honeycombs/compaction faults occur in the concrete structures due to improper solidification of the concrete, which may reduce the strength of the concrete and also act as a passage for the water/acids that further corrodes the reinforcements. This paper explores about the acoustic pulse-echo techniques for the detection of honeycomb defects in a laboratory specimen located at the Federal Institute for Materials Research and Testing (BAM), Berlin. Since concrete is an inhomogeneous medium, the defect Signals are masked by the material noise due to large amount of scattering/ reflections of acoustic waves. A filtering method using the discrete wavelet transforms is applied on the ultrasonic time Signals for the better localization of defects.</abstract>
    <parentTitle language="eng">Journal of non-destructive testing &amp; evaluation</parentTitle>
    <identifier type="old">30458</identifier>
    <identifier type="issn">0973-9610</identifier>
    <author>K. Prasad M</author>
    <author>Herbert Wiggenhauser</author>
    <author>Krishnan Balasubramaniam</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Honeycomb defects</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Acoustic pulse-echo methods</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wavelets transforms</value>
    </subject>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>38916</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>8</pageLast>
    <pageNumber/>
    <edition/>
    <issue>7</issue>
    <volume>21</volume>
    <type>article</type>
    <publisherName>NDT.net</publisherName>
    <publisherPlace>Kirchwald</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Thermographic crack detection in hot steel surfaces</title>
    <abstract language="eng">The detection and characterization of surface cracks in steel specimens prior to damage is a technologically and economically highly significant task and is of utmost importance when it comes to safety-relevant structures. In steel production where steel billets at high temperatures have to be inspected while moving a number of well-established NDT methods cannot be applied. Laser thermography however is a promising candidate to serve as a fast, non-contact and remote tool in this case. We present a study that shows that the crack detection capabilities of laser thermography can be extended also to specimens at high temperature. A combination of inductive and laser heating allows to systematically study the contrast formation as well as the optimization of the important measurement parameters. The experiments are accompanied by FEM simulations that provide a better insight of the physical correlations and support the experimental developments. The aim of these studies is to develop a system with high inspection speed and detection performance to be in-line operated under the hostile environment of steel production lines.</abstract>
    <parentTitle language="eng">The e-journal of nondestructive testing &amp; ultrasonics</parentTitle>
    <identifier type="url">http://ndt.net/?id=19573</identifier>
    <identifier type="issn">1435-4934</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-389161</identifier>
    <enrichment key="eventName">19th World Conference on Non-Destructive Testing (WCNDT 2016)</enrichment>
    <enrichment key="eventPlace">Munich, Germany</enrichment>
    <enrichment key="eventStart">13.06.2016</enrichment>
    <enrichment key="eventEnd">17.06.2016</enrichment>
    <licence>Creative Commons - Namensnennung 3.0</licence>
    <author>Sreedhar Unnikrishnakurup</author>
    <author>Philipp Myrach</author>
    <author>Benjamin Polomski</author>
    <author>Elisabeth Le Claire</author>
    <author>N. Vengara</author>
    <author>Krishnan Balasubramaniam</author>
    <author>Mathias Ziegler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>In-line Monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser Infrared thermography</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cracks</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Induction heating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Steel billets</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>FEM simulation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</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>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/38916/2016-WCNDT-Thermographic Crack Detection in hot steels.pdf</file>
  </doc>
</export-example>
