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contributor authorLuo, Yun
contributor authorJiang, Wenchun
contributor authorChen, Dongfeng
contributor authorWimpory, Robert C.
contributor authorLi, Meijuan
contributor authorLiu, Xiaolong
date accessioned2019-02-28T11:06:52Z
date available2019-02-28T11:06:52Z
date copyright2/20/2018 12:00:00 AM
date issued2018
identifier issn0094-9930
identifier otherpvt_140_02_021404.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4252823
description abstractRepair welding is a popular method to repair the leakage zone in tube-to-tubesheet joint of shell-tube heat exchangers. But the repaired residual stresses are generated inevitably and have a great effect on stress corrosion cracking (SCC). In this paper, the effects of repair welding on residual stress were studied by finite element method (FEM) and neutron diffraction measurement. The original weld residual stresses calculated by FEM showed good agreement with neutron diffraction measurement results. After repair welding, the transverse residual stresses change very little while the longitudinal residual stresses are increased in the repair zone. In the nonrepair zone, both the transverse and longitudinal stresses are decreased. The repair welding times have little effect on residual stress distribution. With the increase of welding length and heat input, the residual stresses increase. Repair opposite to the original welding direction is recommended because the opposite welding direction minimizes the residual stresses.
publisherThe American Society of Mechanical Engineers (ASME)
titleDetermination of Repair Weld Residual Stress in a Tube to Tube-Sheet Joint by Neutron Diffraction and the Finite Element Method
typeJournal Paper
journal volume140
journal issue2
journal titleJournal of Pressure Vessel Technology
identifier doi10.1115/1.4039069
journal fristpage21404
journal lastpage021404-8
treeJournal of Pressure Vessel Technology:;2018:;volume( 140 ):;issue: 002
contenttypeFulltext


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