Failure detection in commercial thermoelectric modules using infrared thermography

Stefan Breitwieser, Karl-Heinz Greßlehner, Bernhard Plank, Günther Hendorfer

Publikation: Beitrag in Buch/Bericht/TagungsbandKonferenzbeitrag

Abstract

This work presents the possibility of using infrared (IR) thermography as a fast, contactless and therefore nondestructive inspection method to detect failures in commercial thermoelectric (TE) modules. For this the TE modules were thermally excited by internal Joule heating. The temperature at the hot side of the TE module was recorded with an IR camera having a thermal resolution of 20 mK and is sensitive in the spectral range of 3 – 5 μm. The IR thermography was carried out on failure free and faulty TE modules. To get information on the possible nature of the failures also a three-dimensional cone-beam Xray Computer Tomography was carried out. In the case of the failure free TE modules weak failures with probably faulty solderings were found which may lead to a malfunction during the normal life time. In the case of the faulty TE modules the main failure mode was also faulty soldering and in addition cracks were found in the legs. Numerical simulations were carried out on failure free and faulty TE modules to study the influence of failures on the temperature distribution on the upper cover plate.
OriginalspracheEnglisch
TitelProceedings of 6th World Sustainable Energy Forum (WSEF2016)
Seitenumfang9
PublikationsstatusVeröffentlicht - 2016
VeranstaltungProceedings of 6th World Sustainable Energy Forum (WSEF2016) - Vienna, Österreich
Dauer: 27 Okt. 201628 Okt. 2016
http://www.world-sustainable-energy.com/forum/program/

Konferenz

KonferenzProceedings of 6th World Sustainable Energy Forum (WSEF2016)
Land/GebietÖsterreich
OrtVienna
Zeitraum27.10.201628.10.2016
Internetadresse

Schlagwörter

  • thermoelectric modules (TEM)
  • infrared thermography
  • quality assurance
  • failure analysis

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