Measurement and Defect Detection of the Weld Bead Based on Online Vision Inspection

Author

Li, Yuan ; Li, You Fu ; Wang, Qing Lin ; Xu, De ; Tan, Min

Author_Institution

Beijing Inst. of Technol., Beijing, China

Volume

59

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

1841

Lastpage

1849

Abstract

Weld bead inspection is important for high-quality welding. This paper summarizes our work on weld bead profile measurement, monitoring, and defect detection using a structured light-based vision inspection system. The configuration of the sensor is described and analyzed. In this configuration, the system presented in this paper can easily be calibrated. The image processing and extraction algorithms for laser profiles and feature points are presented. The dimensional parameters of the weld bead are measured, and the weld defects are detected during multilayer welding processes. Experiments using the vision inspection system were conducted with satisfactory results for online inspection.

Keywords

automatic optical inspection; computer vision; feature extraction; image sensors; welding; defect detection measurement; image extraction algorithms; image processing algorithms; multilayer welding processes; online vision inspection; structured light based vision inspection system; weld bead inspection; weld bead profile measurement; Flaw detection; inspection; machine vision; visual system; welding;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2009.2028222

Filename

5288594