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Laser marking of a laminated surface characterized by an optodynamic methodVegelj, David ; Možina, Janez, fizik, 1945-Marking plain surfaces using laser ablation is widely used in a serial production. However, during a laser marking of small laminated surfaces, a problem arises as a consequence of the gaps between ... the laminations; this tends to decrease the efficiency of the process. Therefore, a real-time measuring method that can be implemented in an industrial system for laser processing is required. In this contribution, we describe an optodynamic method for the on-line characterization of pulsed-laser marking of a laminated surface. The processing-laser beam generates an optodynamic response, i.e., the shock waves, which then spread into the surrounding gas. By using a laser-beam-deflection probe, the analysis of the obtained signals indirectly enables the real-time monitoring of the surface structure. Evaluation of the results obtained by our on-line measuring method is made by two techniques: non-destructive microscopy with extended depth of field and destructive cross-section measurements with optical microscopy. The performed experiments demonstrate that the established experimental system can simultaneously detect the changes in the laser-marking process. Furthermore, it can provide the position and the size of a gap as well as the orientation and the inclination of the samples.Source: Applied physics. A, Materials science & processing. - ISSN 0947-8396 (Vol. 110, iss. 3, 2013, str. 697-701)Type of material - article, component partPublish date - 2013Language - englishCOBISS.SI-ID - 12427547
Author
Vegelj, David |
Možina, Janez, fizik, 1945-
Topics
lasersko označevanje |
laserji |
optodinamika |
laser marking |
lasers |
optodynamics
source: Applied physics. A, Materials science & processing. - ISSN 0947-8396 (Vol. 110, iss. 3, 2013, str. 697-701)
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Database name | Field | Year |
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Vegelj, David | 34143 |
Možina, Janez, fizik, 1945- | 01649 |
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