基于SWIR成像和音频的多模态传感器融合在激光焊接双极板气密性在线监测中的应用

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-27 DOI:10.1016/j.optlastec.2025.113441

Manuel Klaiber , Matthias Hartmann , Jan-Patrick Hermani , Andreas Jahn , Andreas Michalowski

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引用次数: 0

摘要

激光焊接双极板（BPPs）的气密性是燃料电池性能的关键质量特征。检查气密性的压降测试非常耗时且昂贵，对大规模生产构成了挑战。本研究提出了一种新颖的传感器融合方法，将短波红外（SWIR）成像和机载音频信号结合起来，使用循环神经网络进行分析，从而实现制造过程中的实时气密性监测。实验结果表明，分类精度为96% %，与单传感器评估相比，大大降低了过量杀油率，并消除了可能导致泄漏的泄漏。新方法将所需的气密性测试次数减少了47% %。

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Multimodal sensor fusion with SWIR imaging and audio for inline gas-tightness monitoring in laser-welded bipolar plates

The gas-tightness of laser-welded bipolar plates (BPPs) is a key quality feature for the functionality of fuel cells. Pressure drop tests to check gas-tightness are very time-consuming and expensive, posing a challenge for large-scale production. This study proposes a novel sensor fusion approach combining short-wavelength infrared (SWIR) imaging and airborne audio signals, analyzed using recurrent neural networks, to enable real-time gas-tightness monitoring during the manufacturing process. The experimental results show a classification accuracy of 96 %, a substantial reduction in overkill rates compared to single-sensor evaluations, and the elimination of escapes that could lead to leaks. The new approach reduces the number of gas-tightness tests required by 47 %.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems