[ Best Paper of This Month ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 3, pp.139-147

ISSN: 2508-5107 (Online)

Print publication date 15 Jun 2019

Received 20 Dec 2018 Revised 19 Apr 2019 Accepted 20 May 2019

DOI: https://doi.org/10.7735/ksmte.2019.28.3.139

구배율 기반 알고리즘을 이용한 문자마킹 용접공정 최적화에 대한 연구

이보람^a

; 윤태종^a ; 오원빈^a ; 짱강^a ; 심지연^b ; 박민호^c ; 김일수^a^{, *}

A Study on Welding Parameter for Character Marking Using the Gradient-Based Optimization

Bo-Ram Lee^a

; Tae-Jong Yun^a ; Won-Bin Oh^a ; Gang Zhang^a ; Ji-Yeon Shim^b ; Min-Ho Park^c ; Ill-Soo Kim^a^{, *}

aDepartment of Mechanical Engineering, Mokpo National University, 1666 Youngsan-ro, Chungkye-myun, Muan-gun, Jeonnam-do, 58554, Korea
bCarbon&Light Materials Application R&D Group, KITECH, 222, Palbok-ro, Deokjin-gu, Jeonju, Jeonbuk-do, 54853, Korea
cResearch Institute of Medium & Small Shipbuilding, 55, Daebuljugeo 3-ro, Samho-eup, Yeongam-gun, Jeonnam-do, 58457, Korea

Correspondence to: ^*Tel.: +82-61-454-3455 Fax: +82-61-452-6376 E-mail address: ilsookim@mokpo.ac.kr (Ill-Soo Kim).

Abstract

Welding is one of the most fundamental and essential assembly processes in manufacturing. It is an indispensable production technology for modern industries such as shipbuilding, aircraft, and automobile manufacturing. However, owing to the strong arc light, heat, smoke, and noise, one of the main challenges is to ensure the quality of welding because of the poor working environment. In this paper, a mathematical model to determine the correlation between welding parameters and bead width in the GMA welding process is developed and verified. Based on the prediction model using the GBO algorithm, the model is employed as an objective function and a deterministic constraint function to predict the optimal welding parameters on a given top-bead width for the letter-marked system.

Keywords:

GMAW, Process variable, Regression method, Optimization method, GBO (Gradient-Based Optimization)

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