Abstract
Monitoring systems for the laser keyhole welding process of aluminium Tailor Welded Blanks, are in many cases vital to ensure a certain weld quality. Especially process visualization with camera based systems gives a lot of insight. Although for steel it has already been demonstrated that images can be obtained in real-time from the laser welding process using these cameras based on silicon chips, for aluminium this turns out to be not so easy. The light emitted by the weld plume hides the weld pool from the coaxially mounted camera.
In this paper recent experiments are discussed in which a monitoring system is used, that is composed of low cost standard components, to visualize the CW Nd:YAG laser keyhole welding process of AA5182. This monitoring system utilizes a diode laser to illuminate the welding process, combined with an optical interference filter and a CMOS camera. In this way the monitoring system is not over-radiated by the optical emissions of the sample material. It proved to be possible to eliminate the influence of the light emitted by the weld plume on the image and to detect the melt pool. Future efforts will focus on visualizing the keyhole in these images.
In this paper recent experiments are discussed in which a monitoring system is used, that is composed of low cost standard components, to visualize the CW Nd:YAG laser keyhole welding process of AA5182. This monitoring system utilizes a diode laser to illuminate the welding process, combined with an optical interference filter and a CMOS camera. In this way the monitoring system is not over-radiated by the optical emissions of the sample material. It proved to be possible to eliminate the influence of the light emitted by the weld plume on the image and to detect the melt pool. Future efforts will focus on visualizing the keyhole in these images.
Original language | English |
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Title of host publication | ICALEO 2005 |
Subtitle of host publication | 24th International Congress on Applications of Lasers & Electro-Optics, October 31-November 3, Hyatt Regency Miami, Miami, Florida, USA |
Editors | Andreas Ostendorf, Anthony Hoult, Yongfeng Lu |
Place of Publication | Miami, FL, USA |
Publisher | Laser Institute of America |
Pages | 832-836 |
Number of pages | 5 |
ISBN (Print) | 0-912035-82-X |
DOIs | |
Publication status | Published - 31 Oct 2005 |
Event | 24th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2005 - Miami, United States Duration: 31 Oct 2005 → 3 Nov 2005 Conference number: 24 |
Conference
Conference | 24th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2005 |
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Abbreviated title | ICALEO |
Country/Territory | United States |
City | Miami |
Period | 31/10/05 → 3/11/05 |
Keywords
- METIS-224871
- IR-52896