Laser Welding Spot Diagnostics by Laser-Induced Breakdown Spectrometry

被引：8

作者：

Lednev, V. N. ^{[1
]}

Sdvizhenskii, P. A. ^{[1
]}

Grishin, M. Ya ^{[1
]}

Stavertiy, A. Ya ^{[2
]}

Tretyakov, R. S. ^{[2
]}

Asyutin, R. D. ^{[2
]}

Pershin, S. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[2] Bauman Moscow State Tech Univ, Moscow 105005, Russia

来源：

PHYSICS OF WAVE PHENOMENA | 2021年 / 29卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

laser welding; laser induced breakdown spectroscopy; in situ analysis; laser ablation; melt metal analysis; LIQUID STEEL; SPECTROSCOPY;

D O I：

10.3103/S1541308X21030092

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In situ diagnostics of laser welding has been carried out using laser-induced breakdown spectroscopy (LIBS). The influence of weld pool areas (melt pool, solidified weld seam) on the laser plasma properties and LIBS measurements has been investigated. It is shown that the molten metal and high temperature of sample surface increase the LIBS plasma brightness as well as its temperature. The influence of the welding parameters on the LIBS signals has been studied in order to develop technique for on-line detection of nonoptimal laser welding conditions leading to the occurrence of defects in weld seams. An imperfect laser welding mode has been detected in situ for the first time in LIBS measurements.

引用

页码：221 / 228

页数：8

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