An Analysis of Gas Metal Arc Welding Using the Lyapunov Exponent

被引：20

作者：

Li Zhiyong ^{[1
]}

Zhang Qiang ^{[1
]}

Li Yan ^{[1
]}

Yan Xiaocheng ^{[1
]}

Srivatsan, T. S. ^{[2
]}

机构：

[1] N Univ China, Coll Mat Sci & Engn, Taiyuan 030051, Peoples R China

[2] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2013年 / 28卷 / 02期

基金：

美国国家科学基金会;

关键词：

Lyapunov exponent; Chaos; Gas metal arc welding; Welding parameter; TIME-SERIES; LASER;

D O I：

10.1080/10426914.2012.746705

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characteristics of chaos are unique to the technique of gas metal arc welding (GMAW), which can be safely classified as being a nonlinear process. In this article, salient aspects relevant to the development and use of computational technique to accurately calculate the maximum Lyapunov exponent of the welding processes for different parameters is presented and discussed. The maximum Lyapunov exponent is then used to evaluate stability of the welding process while concurrently aiding in the selection of the welding parameters. Careful analysis of the results reveals overall chaos to exist in the gas metal arc welding process for the different droplet transfer modes. Overall stability of the welding process is related to the chaos that is generated and exists. The maximum Lyapunov exponent can be safely used as a valid criterion for evaluating the stability of the welding process. This aids in the selection of an optimized welding parameter for the welding process to form a weld bead that has both quality and integrity.

引用

页码：213 / 219

页数：7

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