Feasibility study of imaging spectroscopy to monitor the quality of online welding

摘要

An online welding quality system based on the use of imaging spectroscopy is proposed and discussed.\udPlasma optical spectroscopy has already been successfully applied in this context by establishing a direct\udcorrelation between some spectroscopic parameters, e.g., the plasma electronic temperature and the resulting\udseam quality. Given that the use of the so-called hyperspectral devices provides both spatial and\udspectral information, we propose their use for the particular case of arc welding quality monitoring in an\udattempt to determine whether this technique would be suitable for this industrial situation. Experimental\udwelding tests are presented, and the ability of the proposed solution to identify simulated defects\udis proved. Detailed spatial analyses suggest that this additional dimension can be used to improve\udthe performance of the entire system.