Date Available

12-7-2018

Year of Publication

2018

Document Type

Master's Thesis

Degree Name

Master of Science in Electrical Engineering (MSEE)

College

Engineering

Department/School/Program

Electrical and Computer Engineering

Advisor

Dr. YuMing Zhang

Abstract

In gas tungsten arc welding (GTAW), weld pool surface contains crucial information for welding development. In this research, simulate skilled welders to control the welding process and determine the penetration stages based on the weld pool reaction.

This study focuses on solving the uncertainty of the liquid weld pool in joint bases. The weld pool penetration process is highly depending on how the weld pool surface shape. To observe the weld pool, reflect the weld pool surface by the laser and image on the shield glass. The experiments show that the penetration can’t be determine by the reflecting grayness due to the variability of base metal. To control the joint bases diversity, fed a tip of the wire after the arc is established. Crate the new pattern of the weld pool penetration. Experiments verified the feasibility of this method.

Digital Object Identifier (DOI)

https://doi.org/10.13023/etd.2018.473

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