Evaluation of non-contact methods forjoint tracking in a laser beam welding application
2016 (English)In: The 7th International Swedish Production Symposium, Conference Proceedings: 25th – 27th of October 2016, Lund: Swedish Production Symposium , 2016, 1-6 p.Conference paper (Other academic)
The use of automated laser welding is a key enabler for resource efficient manufacturing in several industrial sectors. One disadvantage with laser welding is the narrow tolerance requirements in the joint fit-up. This is the main reason for the importance of joint tracking systems. This paper describes anevaluation of four non-contact measurement methods to measure the position, gap width and misalignment between superalloy plates. The evaluation was carried out for increased knowledge about the possibilities and limitations with the different methods. The methods are vision-, laser-line-,thermography- and inductive probe systems which are compared in an experimental setup representing a relevant industrial application. Vision is based on a CMOS camera, where the image information is used directly for the measurements. Laser-line is based on triangulation between a camera and a projected laserline. Thermography detects the heat increase in the gap width due to external heat excitation. Inductive probe uses two eddy current coils, and by a complex response method possibilities to narrow gap measurement is achieved. The results, evaluated by comparing the data from the different systems, clearly highlights possibilities and limitations with respective method and serves as a guide in the development of laser beam welding.
Place, publisher, year, edition, pages
Lund: Swedish Production Symposium , 2016. 1-6 p.
Joint tracking, Gap width, Misalignment, Inductive coil, Thermography, Laser line, Vision sensor
Manufacturing, Surface and Joining Technology
Research subject Production Technology
IdentifiersURN: urn:nbn:se:hv:diva-10147OAI: oai:DiVA.org:hv-10147DiVA: diva2:1047294
7th Swedish Production Symposium, Lund, Sweden, October 25-27, 2016
Ingår i lic.uppsats2016-11-172016-11-172017-01-11Bibliographically approved