Closed loop control of penetration depth during CO2 laser lap welding processes

Share/Save/Bookmark

Sibillano, T. and Rizzi, D. and Mezzapesa, F.P. and Lugara, P.M. and Konuk, A.R. and Aarts, R.G.K.M. and Huis in 't Veld, A.J. and Ancona, A. (2012) Closed loop control of penetration depth during CO2 laser lap welding processes. Sensors (Switserland), 12 (8). 11077 - 11090. ISSN 1424-8220

[img]
Preview
PDF
303kB
Abstract: In this paper we describe a novel spectroscopic closed loop control system capable of stabilizing the penetration depth during laser welding processes by controlling the laser power. Our novel approach is to analyze the optical emission from the laser generated plasma plume above the keyhole, to calculate its electron temperature as a process-monitoring signal. Laser power has been controlled by using a quantitative relationship between the penetration depth and the plasma electron temperature. The sensor is able to correlate in real time the difference between the measured electron temperature and its reference value for the requested penetration depth. Accordingly the closed loop system adjusts the power, thus maintaining the penetration depth.
Item Type:Article
Copyright:© 2012 MDPI
Faculty:
Engineering Technology (CTW)
Link to this item:http://purl.utwente.nl/publications/81839
Official URL:http://dx.doi.org/10.3390/s120811077
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 288460