Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens
From the viewpoint of mechanics, weld cracking tends to occur if the induced tensile stress surpasses a certain value for the particular materials and the welding processes. Welding residual stresses (WRS) can be profoundly affected by the restraint conditions of the welded structures. For estimatin...
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doaj-b64ae51e245240c6ae09cb56c16cd5592020-11-25T02:23:45ZengMDPI AGMaterials1996-19442019-08-011217270010.3390/ma12172700ma12172700Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test SpecimensJiamin Sun0Jonas Hensel1Thomas Nitschke-Pagel2Klaus Dilger3Institute of Joining and Welding, Braunschweig University of Technology, Langer Kamp 8, 38106 Braunschweig, GermanyInstitute of Joining and Welding, Braunschweig University of Technology, Langer Kamp 8, 38106 Braunschweig, GermanyInstitute of Joining and Welding, Braunschweig University of Technology, Langer Kamp 8, 38106 Braunschweig, GermanyInstitute of Joining and Welding, Braunschweig University of Technology, Langer Kamp 8, 38106 Braunschweig, GermanyFrom the viewpoint of mechanics, weld cracking tends to occur if the induced tensile stress surpasses a certain value for the particular materials and the welding processes. Welding residual stresses (WRS) can be profoundly affected by the restraint conditions of the welded structures. For estimating the tendency of weld cracking, the small-scale H-type slit joints have been widely used for cracking tests. However, it is still hard to decide whether the real large-scale component can also be welded without cracking even though the tested weld cracking specimens on the laboratory scale can be welded without cracking. In this study, the intensity of restraint which quantitatively indicates how much a joint is restrained is used. The influence of restraint condition (intensity of restraint) on WRS is systematically investigated using both the numerical simulation and the experimental method. The achievement obtained in the current work is very beneficial to design effective H-type self-restrained cracking test specimens for evaluating the sensitivity of the material and the welding procedures for weld cracking in the real large-scale components.https://www.mdpi.com/1996-1944/12/17/2700weld crackingwelding processeswelding residual stressesintensity of restraintrestraint conditionsnumerical simulation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jiamin Sun Jonas Hensel Thomas Nitschke-Pagel Klaus Dilger |
spellingShingle |
Jiamin Sun Jonas Hensel Thomas Nitschke-Pagel Klaus Dilger Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens Materials weld cracking welding processes welding residual stresses intensity of restraint restraint conditions numerical simulation |
author_facet |
Jiamin Sun Jonas Hensel Thomas Nitschke-Pagel Klaus Dilger |
author_sort |
Jiamin Sun |
title |
Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens |
title_short |
Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens |
title_full |
Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens |
title_fullStr |
Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens |
title_full_unstemmed |
Influence of Restraint Conditions on Welding Residual Stresses in H-Type Cracking Test Specimens |
title_sort |
influence of restraint conditions on welding residual stresses in h-type cracking test specimens |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-08-01 |
description |
From the viewpoint of mechanics, weld cracking tends to occur if the induced tensile stress surpasses a certain value for the particular materials and the welding processes. Welding residual stresses (WRS) can be profoundly affected by the restraint conditions of the welded structures. For estimating the tendency of weld cracking, the small-scale H-type slit joints have been widely used for cracking tests. However, it is still hard to decide whether the real large-scale component can also be welded without cracking even though the tested weld cracking specimens on the laboratory scale can be welded without cracking. In this study, the intensity of restraint which quantitatively indicates how much a joint is restrained is used. The influence of restraint condition (intensity of restraint) on WRS is systematically investigated using both the numerical simulation and the experimental method. The achievement obtained in the current work is very beneficial to design effective H-type self-restrained cracking test specimens for evaluating the sensitivity of the material and the welding procedures for weld cracking in the real large-scale components. |
topic |
weld cracking welding processes welding residual stresses intensity of restraint restraint conditions numerical simulation |
url |
https://www.mdpi.com/1996-1944/12/17/2700 |
work_keys_str_mv |
AT jiaminsun influenceofrestraintconditionsonweldingresidualstressesinhtypecrackingtestspecimens AT jonashensel influenceofrestraintconditionsonweldingresidualstressesinhtypecrackingtestspecimens AT thomasnitschkepagel influenceofrestraintconditionsonweldingresidualstressesinhtypecrackingtestspecimens AT klausdilger influenceofrestraintconditionsonweldingresidualstressesinhtypecrackingtestspecimens |
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1724857418774478848 |