Possibilities for online process monitoring at laser brazing based on two dimensional detector systems
Grimm A, Schmidt M (2009)
Publication Type: Conference contribution
Publication year: 2009
Publisher: Laser Institute of America
Book Volume: 102
Pages Range: 537-544
Conference Proceedings Title: ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings
Event location: USA
ISBN: 9780912035598
DOI: 10.2351/1.5061607
Abstract
Laser brazed seams are nowadays well established in automotive industry for joints which must fulfill high quality standards. Joints located in direct visible areas of the car body, like the connection between roof and side-panel or the trunk-lit, must be manufactured without any failures like pores or spilling. To achieve this goal, system technology is subject to high accuracy requests on the one hand; on the other hand the seams are controlled after manufacturing either manually or by optical systems. In contrast to laser welding there are no online process monitoring systems available for laser brazing until now. The following investigations reveal some possibilities to monitor the laser brazing process of zinc coated steel sheets by two dimensional detector systems. For this purpose two different spectral intervals are chosen. With the help of images in the visible spectrum for instance the quality of the wetting process and the formation of fusion failures can be observed. The investigations in the near infrared spectrum reveal phenomena caused by an imbalanced temperature field, which are the basis for failures in laser brazing.
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APA:
Grimm, A., & Schmidt, M. (2009). Possibilities for online process monitoring at laser brazing based on two dimensional detector systems. In ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings (pp. 537-544). USA: Laser Institute of America.
MLA:
Grimm, Alexander, and Michael Schmidt. "Possibilities for online process monitoring at laser brazing based on two dimensional detector systems." Proceedings of the 28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009, USA Laser Institute of America, 2009. 537-544.
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