Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400

Underwater wet welding (UWW) is widely used in repair of offshore constructions and underwater pipelines by the shielded metal arc welding (SMAW) method. They are subjected the dynamic load due to sea water flow. In this condition, they can experience the fatigue failure. This study was aimed to det...

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Autores principales:	Surojo E., Anindito J., Paundra F., Prabowo A. R., Budiana E. P., Muhayat N., Badaruddin M., Triyono
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	underwater wet welding low carbon steel ss400 water depth water flow fatigue crack growth rate Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/6206a586f02e4700b5a11c2c458b2fff
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spelling	oai:doaj.org-article:6206a586f02e4700b5a11c2c458b2fff2021-12-05T14:10:46ZEffect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS4002391-543910.1515/eng-2021-0036https://doaj.org/article/6206a586f02e4700b5a11c2c458b2fff2021-01-01T00:00:00Zhttps://doi.org/10.1515/eng-2021-0036https://doaj.org/toc/2391-5439Underwater wet welding (UWW) is widely used in repair of offshore constructions and underwater pipelines by the shielded metal arc welding (SMAW) method. They are subjected the dynamic load due to sea water flow. In this condition, they can experience the fatigue failure. This study was aimed to determine the effect of water flow speed (0 m/s, 1 m/s, and 2 m/s) and water depth (2.5 m and 5 m) on the crack growth rate of underwater wet welded low carbon steel SS400. Underwater wet welding processes were conducted using E6013 electrode (RB26) with a diameter of 4 mm, type of negative electrode polarity and constant electric current and welding speed of 90 A and 1.5 mm/s respectively. In air welding process was also conducted for comparison. Compared to in air welded joint, underwater wet welded joints have more weld defects including porosity, incomplete penetration and irregular surface. Fatigue crack growth rate of underwater wet welded joints will decrease as water depth increases and water flow rate decreases. It is represented by Paris's constant, where specimens in air welding, 2.5 m and 5 m water depth have average Paris's constant of 8.16, 7.54 and 5.56 respectively. The increasing water depth will cause the formation of Acicular Ferrite structure which has high fatigue crack resistance. The higher the water flow rate, the higher the welding defects, thereby reducing the fatigue crack resistance.Surojo E.Anindito J.Paundra F.Prabowo A. R.Budiana E. P.Muhayat N.Badaruddin M.TriyonoDe Gruyterarticleunderwater wet weldinglow carbon steel ss400water depthwater flowfatigue crack growth rateEngineering (General). Civil engineering (General)TA1-2040ENOpen Engineering, Vol 11, Iss 1, Pp 329-338 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	underwater wet welding low carbon steel ss400 water depth water flow fatigue crack growth rate Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	underwater wet welding low carbon steel ss400 water depth water flow fatigue crack growth rate Engineering (General). Civil engineering (General) TA1-2040 Surojo E. Anindito J. Paundra F. Prabowo A. R. Budiana E. P. Muhayat N. Badaruddin M. Triyono Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
description	Underwater wet welding (UWW) is widely used in repair of offshore constructions and underwater pipelines by the shielded metal arc welding (SMAW) method. They are subjected the dynamic load due to sea water flow. In this condition, they can experience the fatigue failure. This study was aimed to determine the effect of water flow speed (0 m/s, 1 m/s, and 2 m/s) and water depth (2.5 m and 5 m) on the crack growth rate of underwater wet welded low carbon steel SS400. Underwater wet welding processes were conducted using E6013 electrode (RB26) with a diameter of 4 mm, type of negative electrode polarity and constant electric current and welding speed of 90 A and 1.5 mm/s respectively. In air welding process was also conducted for comparison. Compared to in air welded joint, underwater wet welded joints have more weld defects including porosity, incomplete penetration and irregular surface. Fatigue crack growth rate of underwater wet welded joints will decrease as water depth increases and water flow rate decreases. It is represented by Paris's constant, where specimens in air welding, 2.5 m and 5 m water depth have average Paris's constant of 8.16, 7.54 and 5.56 respectively. The increasing water depth will cause the formation of Acicular Ferrite structure which has high fatigue crack resistance. The higher the water flow rate, the higher the welding defects, thereby reducing the fatigue crack resistance.
format	article
author	Surojo E. Anindito J. Paundra F. Prabowo A. R. Budiana E. P. Muhayat N. Badaruddin M. Triyono
author_facet	Surojo E. Anindito J. Paundra F. Prabowo A. R. Budiana E. P. Muhayat N. Badaruddin M. Triyono
author_sort	Surojo E.
title	Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
title_short	Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
title_full	Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
title_fullStr	Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
title_full_unstemmed	Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400
title_sort	effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel ss400
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/6206a586f02e4700b5a11c2c458b2fff
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_version_	1718371724521635840

Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400

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