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13th CIRP Conference on Photonic Technologies  08/2024

Acoustic process monitoring during the structuring of diffusion media for fuel cells with Ultrashort Laser Pulses

Authors:

Christian Geigera, Pawel Garkushaa, Christian Bernauera, Simon Mehrla, Pascal A. Schirmerb, Michael F. Zaeha

Contents:
  •          Diffusion media in fuel cells can be optimized through laser structuring to improve their performance characteristics.
  •          An optical microphone was used to monitor the process during laser structuring.
  •          This paper demonstrated that acoustic data can be used to monitor the laser focus position as well as material transitions in the diffusion media during structuring.
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