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Non-destructive real time monitoring of the laser welding process
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SYSNO ASEP 0387578 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Non-destructive real time monitoring of the laser welding process Author(s) Šebestová, H. (CZ)
Chmelíčková, Hana (FZU-D) RID
Nožka, Libor (FZU-D) RID, ORCID
Moudrý, J. (CZ)Source Title Journal of Materials Engineering and Performance. - : Springer - ISSN 1059-9495
Roč. 21, č. 5 (2012), 764-769Number of pages 6 s. Language eng - English Country US - United States Keywords defect detection ; laser welding ; penetration depth ; plasma electron temperature Subject RIV BH - Optics, Masers, Lasers R&D Projects KAN301370701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100522 - FZU-D (2005-2011) UT WOS 000303455900030 DOI 10.1007/s11665-012-0193-4 Annotation Laser welding is a high power density technology of materials joining that has many advantages in comparison with conventional fusion welding methods, for example, high accuracy, flexibility, repeatability and especially very narrow heat-affected zone which results in minimal workpiece distortions. Since it is still quite expensive technology, minimal spoilage is required. Effective system of quality control and processing parameters optimization must be established to reduce total costs, which is particularly required in industrial production. In this article some results of pulsed Nd:YAG laser welding process monitoring based on the measurement of plasma electron temperature are presented. The ability of designed sensor to detect weld penetration depth has been demonstrated. Plasma spectral lines intensities measurement can discover gap instabilities as well as local sheet thickness reduction. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2013
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