Standard-compliant detection of fillet weld surface imperfections for MAG-welding using a 3D-line scanner

Sebastian T. Hübner; Katharina Simmen; Andreas Breitbarth; Gunther Notni

doi:10.1117/12.2588536

12 April 2021 Standard-compliant detection of fillet weld surface imperfections for MAG-welding using a 3D-line scanner

Sebastian T. Hübner, Katharina Simmen, Andreas Breitbarth, Gunther Notni

Proceedings Volume 11732, Dimensional Optical Metrology and Inspection for Practical Applications X; 117320A (2021) https://doi.org/10.1117/12.2588536
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

Within the paper the use of a 3D-line scanner is evaluated to realize an inline and intime detection of weld imperfections for an automated MAG-welding of fillet welds. The required conditions of the weld are in accordance with the quality level B of the international standard ISO 5817 [1]. The used system is a Wenglor 3D-line scanner with a wavelength of 660 nm and an image recording frequency of at least 200 Hz. This scanner is able to detect, as a stand-alone system, geometry and surface imperfections of the weld. Therefore, algorithms were developed for the reliable recognition of deviations regarding the size, superelevations, undercuts, seam transition angles and the symmetry of the weld with a measurement accuracy of 10 ➭m. With the information, gathered by the line scanner and the corresponding image-data processing algorithms, it is possible to improve the efficiency of automated MAG-welding. The welding process can be interrupted and recalibrated if significant imperfections are detected. This is realized with a short time delay depending on the distance between the welding torch and the camera and the welding speed. The direct feedback could prevent the weldment from getting unusable and saving ressources through minor required efforts for renewing or revising the weld. Additionally, the required visual testing (ISO 17635 [2], ISO 17637 [3]) can be objectified and accelerated by highlighting the parts of the weld which are most probably affected by imperfections. In the future this automated system could possibly replace the manual quality inspection.

Conference Presentation

Citation Download Citation

Sebastian T. Hübner, Katharina Simmen, Andreas Breitbarth, and Gunther Notni "Standard-compliant detection of fillet weld surface imperfections for MAG-welding using a 3D-line scanner", Proc. SPIE 11732, Dimensional Optical Metrology and Inspection for Practical Applications X, 117320A (12 April 2021); https://doi.org/10.1117/12.2588536

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available