Open AccessHigh-power disc laser welding quality detection based on photoelectric sensing system
Author(s) -
Wenjie Huang,
Deyong You,
Yanxi Zhang,
Xiangdong Gao
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1986/1/012048
Subject(s) - photoelectric effect , welding , matlab , laser , power (physics) , data acquisition , software , photoelectric sensor , optics , materials science , acoustics , computer science , electrical engineering , engineering , optoelectronics , physics , quantum mechanics , programming language , operating system , metallurgy
In order to monitor the quality of laser welding in real time, a photoelectric sensor system is designed, which can collect the light radiation signals of the welding area in real time. The signals are converted into voltage signals by the photoelectric sensor and collected by the data acquisition card. Matlab software is used to analyze the power spectrum of the collected data. It is found that visible light and reflected light have similar power spectrum characteristics through experimental analysis, and the number of peaks and peak frequencies of the power spectrum have an obvious relationship with the quality of the weld. The results show that the detection system can effectively monitor welding defects in real time.