A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding
The International Maritime Organization (IMO) has developed stricter regulations on emission standards for sulfur oxides, etc., and the demand for Liquefied Natural Gas (LNG) is increasing as an alternative to satisfy these standards. This study relates to fiber laser welding, an approach which offe...
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doaj-e562380b9e2d412e91e8b7500391a5972021-02-28T00:01:30ZengMDPI AGProcesses2227-97172021-02-01942842810.3390/pr9030428A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser WeldingJaewoong Kim0Younghyun Kim1Jisun Kim2Yongtai Kim3Dongwoo Kim4Sungwook Kang5Changmin Pyo6Smart Mobility Materials and Components R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, KoreaSmart Mobility Materials and Components R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, KoreaSmart Mobility Materials and Components R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, KoreaCargo Containment System Research Dep’t, Hyundai Heavy Industries, Seoul 03058, KoreaCargo Containment System Research Dep’t, Hyundai Heavy Industries, Seoul 03058, KoreaTransport Machine Components R&D Group, Korea Institute of Industrial Technology, Jinju-si 52845, KoreaSmart Mobility Materials and Components R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, KoreaThe International Maritime Organization (IMO) has developed stricter regulations on emission standards for sulfur oxides, etc., and the demand for Liquefied Natural Gas (LNG) is increasing as an alternative to satisfy these standards. This study relates to fiber laser welding, an approach which offers high-speed welding and low welding deformation for ASTM F1684, which has a low coefficient of thermal expansion (CTE) even in a cryogenic environment. In this study, through three preliminary experiments using 0.25 mm thick Invar, the conditions required to secure sufficient penetration depth and back bead were identified. Through the cross-sectional observation analysis, the welding conditions without defects were identified and the trend of penetration shape according to increasing welding speed was identified. Following a lap joint laser welding experiment under the secured conditions, the mechanical properties were evaluated through the shear strength test and the heat influence range of a fiber laser was identified through the temperature measurement of a welding part. As a result, it was confirmed that the shear strength of the lap joint laser welding part was 86.8% that of the base metal.https://www.mdpi.com/2227-9717/9/3/428fiber laser weldinglap joint weldingtensile strengthASTM F1684 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jaewoong Kim Younghyun Kim Jisun Kim Yongtai Kim Dongwoo Kim Sungwook Kang Changmin Pyo |
spellingShingle |
Jaewoong Kim Younghyun Kim Jisun Kim Yongtai Kim Dongwoo Kim Sungwook Kang Changmin Pyo A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding Processes fiber laser welding lap joint welding tensile strength ASTM F1684 |
author_facet |
Jaewoong Kim Younghyun Kim Jisun Kim Yongtai Kim Dongwoo Kim Sungwook Kang Changmin Pyo |
author_sort |
Jaewoong Kim |
title |
A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding |
title_short |
A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding |
title_full |
A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding |
title_fullStr |
A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding |
title_full_unstemmed |
A Study on Lap Joint Welding of Thin Plate ASTM F1684 Using Fiber Laser Welding |
title_sort |
study on lap joint welding of thin plate astm f1684 using fiber laser welding |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2021-02-01 |
description |
The International Maritime Organization (IMO) has developed stricter regulations on emission standards for sulfur oxides, etc., and the demand for Liquefied Natural Gas (LNG) is increasing as an alternative to satisfy these standards. This study relates to fiber laser welding, an approach which offers high-speed welding and low welding deformation for ASTM F1684, which has a low coefficient of thermal expansion (CTE) even in a cryogenic environment. In this study, through three preliminary experiments using 0.25 mm thick Invar, the conditions required to secure sufficient penetration depth and back bead were identified. Through the cross-sectional observation analysis, the welding conditions without defects were identified and the trend of penetration shape according to increasing welding speed was identified. Following a lap joint laser welding experiment under the secured conditions, the mechanical properties were evaluated through the shear strength test and the heat influence range of a fiber laser was identified through the temperature measurement of a welding part. As a result, it was confirmed that the shear strength of the lap joint laser welding part was 86.8% that of the base metal. |
topic |
fiber laser welding lap joint welding tensile strength ASTM F1684 |
url |
https://www.mdpi.com/2227-9717/9/3/428 |
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