On the interaction between welding residual stresses: a numerical and experimental investigation

The interaction of weld induced residual stresses in an important issue for multi-pass and repair welding operations; effective prediction of the magnitude and location of peak residual stresses can lead to improved lifing predictions and greater understanding of the performance of components in ser...

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Main Authors: Salerno, Gervasio, Bennett, Chris, Sun, Wei, Becker, Adib, Palumbo, Nunzio, Kelleher, Joe, Zhang, Shu Yan
Format: Article
Published: Elsevier 2018
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Online Access:https://eprints.nottingham.ac.uk/51415/
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author Salerno, Gervasio
Bennett, Chris
Sun, Wei
Becker, Adib
Palumbo, Nunzio
Kelleher, Joe
Zhang, Shu Yan
author_facet Salerno, Gervasio
Bennett, Chris
Sun, Wei
Becker, Adib
Palumbo, Nunzio
Kelleher, Joe
Zhang, Shu Yan
author_sort Salerno, Gervasio
building Nottingham Research Data Repository
collection Online Access
description The interaction of weld induced residual stresses in an important issue for multi-pass and repair welding operations; effective prediction of the magnitude and location of peak residual stresses can lead to improved lifing predictions and greater understanding of the performance of components in service. However, the interaction of existing residual stress field with new ones imposed by fusion welding processes has received little attention to date. This study presents a numerical and experimental investigation into the interaction of bead-on-plate welds in thick plates of IN718 with the aim of evaluating the effects of pre-existing weld residual stresses on the final global residual stress distribution. Sequentially coupled thermo-mechanical finite element (FE) models, which have been validated through temperature measurements, optical macrography and residual stress measurements, performed using the neutron diffraction technique, have been used to investigate the interactions. The results show good correlation between the experimental and model residual stress fields, demonstrating that the FE models are capable of predicting the redistribution of existing residual stress fields subjected to fusion welding processes and that this can be achieved with the use of parent material properties throughout, without considering any material property modifications which may occur due to microstructural changes in and around the weld region. It can also be seen from the results that, even with the relatively thick plates used in the study, a plane-stress state exists in the plates with a normal stress of approximately zero in all cases.
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spelling nottingham-514152020-05-04T19:36:51Z https://eprints.nottingham.ac.uk/51415/ On the interaction between welding residual stresses: a numerical and experimental investigation Salerno, Gervasio Bennett, Chris Sun, Wei Becker, Adib Palumbo, Nunzio Kelleher, Joe Zhang, Shu Yan The interaction of weld induced residual stresses in an important issue for multi-pass and repair welding operations; effective prediction of the magnitude and location of peak residual stresses can lead to improved lifing predictions and greater understanding of the performance of components in service. However, the interaction of existing residual stress field with new ones imposed by fusion welding processes has received little attention to date. This study presents a numerical and experimental investigation into the interaction of bead-on-plate welds in thick plates of IN718 with the aim of evaluating the effects of pre-existing weld residual stresses on the final global residual stress distribution. Sequentially coupled thermo-mechanical finite element (FE) models, which have been validated through temperature measurements, optical macrography and residual stress measurements, performed using the neutron diffraction technique, have been used to investigate the interactions. The results show good correlation between the experimental and model residual stress fields, demonstrating that the FE models are capable of predicting the redistribution of existing residual stress fields subjected to fusion welding processes and that this can be achieved with the use of parent material properties throughout, without considering any material property modifications which may occur due to microstructural changes in and around the weld region. It can also be seen from the results that, even with the relatively thick plates used in the study, a plane-stress state exists in the plates with a normal stress of approximately zero in all cases. Elsevier 2018-05-18 Article PeerReviewed Salerno, Gervasio, Bennett, Chris, Sun, Wei, Becker, Adib, Palumbo, Nunzio, Kelleher, Joe and Zhang, Shu Yan (2018) On the interaction between welding residual stresses: a numerical and experimental investigation. International Journal of Mechanical Sciences . ISSN 0020-7403 (In Press) Weld Modelling; Residual stress; Finite Element; Repair; Thermal; Mechanical https://www.sciencedirect.com/science/article/pii/S0020740317333441 doi:10.1016/j.ijmecsci.2018.04.055 doi:10.1016/j.ijmecsci.2018.04.055
spellingShingle Weld Modelling; Residual stress; Finite Element; Repair; Thermal; Mechanical
Salerno, Gervasio
Bennett, Chris
Sun, Wei
Becker, Adib
Palumbo, Nunzio
Kelleher, Joe
Zhang, Shu Yan
On the interaction between welding residual stresses: a numerical and experimental investigation
title On the interaction between welding residual stresses: a numerical and experimental investigation
title_full On the interaction between welding residual stresses: a numerical and experimental investigation
title_fullStr On the interaction between welding residual stresses: a numerical and experimental investigation
title_full_unstemmed On the interaction between welding residual stresses: a numerical and experimental investigation
title_short On the interaction between welding residual stresses: a numerical and experimental investigation
title_sort on the interaction between welding residual stresses: a numerical and experimental investigation
topic Weld Modelling; Residual stress; Finite Element; Repair; Thermal; Mechanical
url https://eprints.nottingham.ac.uk/51415/
https://eprints.nottingham.ac.uk/51415/
https://eprints.nottingham.ac.uk/51415/