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http://dx.doi.org/10.3795/KSME-A.2009.33.11.1256

A Study on Characteristics of Plasma Emission Signals with Welding Conditions in CO2 Laser  

Kim, Jong-Do (한국해양대학교 기관시스템공학부)
Lee, Chang-Je (한국해양대학교 대학원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.11, 2009 , pp. 1256-1261 More about this Journal
Abstract
Today, implementation of the defect detection in laser welding has been researched for a long time, but most studies have been made around thin plate within $1{\sim}3mm^t$. Therefore, this study was measured and analyzed light emission signals of the induced plasma in $CO_2$ laser lap welding of $6mm^t$ Zn primer-coated steel, and based on this analysis, research made an investigation into possibility of monitoring in thick plate welding. It was been analyzing the measured signals by RMS and FFT processing, as a results, we were able to confirm definite difference of two signals between humping bead and sound bead. Thus, possibility of real time monitoring in $CO_2$ laser lap welding verified experimentally.
Keywords
Laser Welding; Zn-Coated Steel; Lap Welding; RMS Signal; FFT Processing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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