Non-Destructive Inspection of Thermoelectric Modules by Scanning Acoustic Microscopy

Karl-Heinz Gresslehner, Martin Krenn, P Kerepsi, Lukas Gupfinger, Markus Höglinger, Peter Zellinger, Bernhard Plank, Christoph Beisteiner

Research output: Contribution to conferencePoster

Abstract

This work presents the potential of Scanning Acoustic Microscopy (SAM) as a crucial non-destructive evaluation (NDE) method for process control and failure analysis of thermoelectric modules (TE-M). Thermoelectric generators (TEG) are highlighted for their ability to convert waste heat into electrical energy, offering benefits such as no moving parts, low maintenance, and long lifespan. The study emphasizes the importance of reliability engineering in transitioning thermoelectricity from lab-scale to industrial applications, focusing on the quality of thermoelement junctions. The "Dream Team Concept" of NDE methods, including IR-Thermography, SAM, and X-ray Tomography (XCT), is introduced for comprehensive analysis. The findings demonstrate that these NDE methods provide essential data for subsequent destructive analyses, ensuring the long-term stability and performance of TE-modules.
Original languageEnglish
Publication statusPublished - 30 Jun 2024
EventInternational & European Conference on Thermoelectrics - Krakow, Poland
Duration: 30 Jun 20244 Jul 2024
Conference number: 40th & 20th
https://its.org/2024/06/30/check-the-ict2024-program/

Conference

ConferenceInternational & European Conference on Thermoelectrics
Abbreviated title ICT/ECT 2024
Country/TerritoryPoland
CityKrakow
Period30.06.202404.07.2024
Internet address

Keywords

  • Thermoelectric modules
  • Infrared thermography
  • Non-destructive evaluation
  • Failure analysis

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