Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates

Refill friction stir spot welding (RFSSW) technology is a solid-state joint that can replace conventional welding or riveting processes in aerospace applications. The quality of the new welding process is directly influenced by the welding parameters selected. A finite element analysis was performed...

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Main Authors: Dan Cătălin Bîrsan, Viorel Păunoiu, Virgil Gabriel Teodor
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/16/13/4519
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author Dan Cătălin Bîrsan
Viorel Păunoiu
Virgil Gabriel Teodor
author_facet Dan Cătălin Bîrsan
Viorel Păunoiu
Virgil Gabriel Teodor
author_sort Dan Cătălin Bîrsan
collection DOAJ
description Refill friction stir spot welding (RFSSW) technology is a solid-state joint that can replace conventional welding or riveting processes in aerospace applications. The quality of the new welding process is directly influenced by the welding parameters selected. A finite element analysis was performed to understand the complexity of the thermomechanical phenomena during this welding process, validated by controlled experiments. An optimization model using neural networks was developed based on 98 parameter sets resulting from changing 3 welding parameters, namely pin penetration depth, pin rotation speed, and retention time. Ten parameter sets were used to verify the learning results of the optimization model. The 10 results were drawn to correspond to a uniform distribution over the training domain, with the aim of avoiding areas that might have contained distortions. The maximum temperature and normal stress reached at the end of the welding process were considered output data.
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spelling doaj.art-f5b334f30ea44bf7870d10384b178b392023-11-18T16:55:56ZengMDPI AGMaterials1996-19442023-06-011613451910.3390/ma16134519Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy PlatesDan Cătălin Bîrsan0Viorel Păunoiu1Virgil Gabriel Teodor2Faculty of Engineering, Department of Manufacturing Engineering, “Dunărea de Jos” University of Galati, Domnească Street, 47, RO-800008 Galati, RomaniaFaculty of Engineering, Department of Manufacturing Engineering, “Dunărea de Jos” University of Galati, Domnească Street, 47, RO-800008 Galati, RomaniaFaculty of Engineering, Department of Manufacturing Engineering, “Dunărea de Jos” University of Galati, Domnească Street, 47, RO-800008 Galati, RomaniaRefill friction stir spot welding (RFSSW) technology is a solid-state joint that can replace conventional welding or riveting processes in aerospace applications. The quality of the new welding process is directly influenced by the welding parameters selected. A finite element analysis was performed to understand the complexity of the thermomechanical phenomena during this welding process, validated by controlled experiments. An optimization model using neural networks was developed based on 98 parameter sets resulting from changing 3 welding parameters, namely pin penetration depth, pin rotation speed, and retention time. Ten parameter sets were used to verify the learning results of the optimization model. The 10 results were drawn to correspond to a uniform distribution over the training domain, with the aim of avoiding areas that might have contained distortions. The maximum temperature and normal stress reached at the end of the welding process were considered output data.https://www.mdpi.com/1996-1944/16/13/4519stir spot weldingnumerical simulationaluminum alloy
spellingShingle Dan Cătălin Bîrsan
Viorel Păunoiu
Virgil Gabriel Teodor
Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
Materials
stir spot welding
numerical simulation
aluminum alloy
title Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
title_full Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
title_fullStr Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
title_full_unstemmed Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
title_short Neural Networks Applied for Predictive Parameters Analysis of the Refill Friction Stir Spot Welding Process of 6061-T6 Aluminum Alloy Plates
title_sort neural networks applied for predictive parameters analysis of the refill friction stir spot welding process of 6061 t6 aluminum alloy plates
topic stir spot welding
numerical simulation
aluminum alloy
url https://www.mdpi.com/1996-1944/16/13/4519
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AT viorelpaunoiu neuralnetworksappliedforpredictiveparametersanalysisoftherefillfrictionstirspotweldingprocessof6061t6aluminumalloyplates
AT virgilgabrielteodor neuralnetworksappliedforpredictiveparametersanalysisoftherefillfrictionstirspotweldingprocessof6061t6aluminumalloyplates