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Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP

ABSTRACT Weldability is a major important issue for the fabrication of different grades of stainless steel which are used in industries. Tungsten inert gas (TIG) welding is widely used in industry for accurate and precision work, but lack of penetration is observed in this process, although current...

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Main Authors: Acharya, Samarendra, Gonda, Debasish, Das, Santanu, Bose, Dipankar, Islam, Rafikul
Format: Article
Language:English
English
English
Published: Creative Decisions Foundation 2024
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://irep.iium.edu.my/110830/2/IJAHP%20in%20Scopus.pdf
http://irep.iium.edu.my/110830/3/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity.pdf
http://irep.iium.edu.my/110830/14/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity_Scopus.pdf
http://irep.iium.edu.my/110830/
https://www.ijahp.org/index.php/IJAHP/article/view/1120
https://doi.org/10.13033/ijahp.v15i3.1120
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spelling my.iium.irep.1108302024-07-30T04:22:39Z http://irep.iium.edu.my/110830/ Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP Acharya, Samarendra Gonda, Debasish Das, Santanu Bose, Dipankar Islam, Rafikul TJ Mechanical engineering and machinery ABSTRACT Weldability is a major important issue for the fabrication of different grades of stainless steel which are used in industries. Tungsten inert gas (TIG) welding is widely used in industry for accurate and precision work, but lack of penetration is observed in this process, although current and welding speed can be varied considerably to have high heat input to get deeper penetration. On the contrary, it also adversely affects mechanical properties of the weldment. To overcome this, activated flux TIG welding is often used in industry to achieve higher depth of penetration with relatively lesser heat input. In this work, activated flux TIG welding is used with input variables such as heat input, welding speed and pulse frequency. Base metal is chosen as SS 304L stainless steel. A hybrid flux mixture containing fluxes of SiO2, MnO2 and MoO3 in the ratio of 1:1:2 is used to get desired depth of penetration. Nine experimental runs are conducted to get the optimum depth of penetration. Here, heat input values are considered as 2.767 kJ/mm, 1.470 kJ/mm and 1.281 kJ/mm and pulse frequency is considered as 160 Hz, 120 Hz and 80 Hz. Welding speed varies in the range of 0.5 mm/s to 1.18 mm/s. The maximum depth of penetration of 4.42 mm is achieved with a heat input of 2.767 kJ/mm, welding speed of 0.5 mm/s and pulse frequency of 160 Hz. Reversed Marangoni effect and arc constriction effect are mainly the responsible mechanisms behind deeper penetration in ATIG welding. In this experiment, a multi criteria decision making tool, i.e. the analytical hierarchy process (AHP), is used for validating the optimum value as obtained from the experiment. It is concluded that the optimal values obtained from experiment are in good accordance with that obtained by the AHP. The outcome of the present investigation indicates applicability of ATIG welding for joining improved thickness of stainless steel flats to give enhanced productivity by reducing the number of weld passes. Creative Decisions Foundation 2024-02-07 Article PeerReviewed application/pdf en http://irep.iium.edu.my/110830/2/IJAHP%20in%20Scopus.pdf application/pdf en http://irep.iium.edu.my/110830/3/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity.pdf application/pdf en http://irep.iium.edu.my/110830/14/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity_Scopus.pdf Acharya, Samarendra and Gonda, Debasish and Das, Santanu and Bose, Dipankar and Islam, Rafikul (2024) Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP. International Journal of the Analytic Hierarchy Process, 15 (3). pp. 1-20. ISSN 1936-6744 https://www.ijahp.org/index.php/IJAHP/article/view/1120 https://doi.org/10.13033/ijahp.v15i3.1120
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Acharya, Samarendra
Gonda, Debasish
Das, Santanu
Bose, Dipankar
Islam, Rafikul
Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
description ABSTRACT Weldability is a major important issue for the fabrication of different grades of stainless steel which are used in industries. Tungsten inert gas (TIG) welding is widely used in industry for accurate and precision work, but lack of penetration is observed in this process, although current and welding speed can be varied considerably to have high heat input to get deeper penetration. On the contrary, it also adversely affects mechanical properties of the weldment. To overcome this, activated flux TIG welding is often used in industry to achieve higher depth of penetration with relatively lesser heat input. In this work, activated flux TIG welding is used with input variables such as heat input, welding speed and pulse frequency. Base metal is chosen as SS 304L stainless steel. A hybrid flux mixture containing fluxes of SiO2, MnO2 and MoO3 in the ratio of 1:1:2 is used to get desired depth of penetration. Nine experimental runs are conducted to get the optimum depth of penetration. Here, heat input values are considered as 2.767 kJ/mm, 1.470 kJ/mm and 1.281 kJ/mm and pulse frequency is considered as 160 Hz, 120 Hz and 80 Hz. Welding speed varies in the range of 0.5 mm/s to 1.18 mm/s. The maximum depth of penetration of 4.42 mm is achieved with a heat input of 2.767 kJ/mm, welding speed of 0.5 mm/s and pulse frequency of 160 Hz. Reversed Marangoni effect and arc constriction effect are mainly the responsible mechanisms behind deeper penetration in ATIG welding. In this experiment, a multi criteria decision making tool, i.e. the analytical hierarchy process (AHP), is used for validating the optimum value as obtained from the experiment. It is concluded that the optimal values obtained from experiment are in good accordance with that obtained by the AHP. The outcome of the present investigation indicates applicability of ATIG welding for joining improved thickness of stainless steel flats to give enhanced productivity by reducing the number of weld passes.
format Article
author Acharya, Samarendra
Gonda, Debasish
Das, Santanu
Bose, Dipankar
Islam, Rafikul
author_facet Acharya, Samarendra
Gonda, Debasish
Das, Santanu
Bose, Dipankar
Islam, Rafikul
author_sort Acharya, Samarendra
title Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
title_short Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
title_full Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
title_fullStr Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
title_full_unstemmed Augmentation of depth of penetration and productivity benefits of ATIG welds using the AHP
title_sort augmentation of depth of penetration and productivity benefits of atig welds using the ahp
publisher Creative Decisions Foundation
publishDate 2024
url http://irep.iium.edu.my/110830/2/IJAHP%20in%20Scopus.pdf
http://irep.iium.edu.my/110830/3/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity.pdf
http://irep.iium.edu.my/110830/14/110830_Augmentation%20of%20depth%20of%20penetration%20and%20productivity_Scopus.pdf
http://irep.iium.edu.my/110830/
https://www.ijahp.org/index.php/IJAHP/article/view/1120
https://doi.org/10.13033/ijahp.v15i3.1120
_version_ 1806442131454164992
score 13.211869

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