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http://dx.doi.org/10.5781/JWJ.2016.34.5.47

Effect of Weld Elastic Modulus on Simulation of Stress Concentration and Fatigue Life for Boiler Vessel  

Choe, Byung Hak (Dept. of Ad. Metal & Materials Sci. Eng., Gangneung-Wonju National Univ.)
Lee, Bum Gyu (Dept. of Ad. Metal & Materials Sci. Eng., Gangneung-Wonju National Univ.)
Shim, Jong Heon (Dept. of Ad. Metal & Materials Sci. Eng., Gangneung-Wonju National Univ.)
Park, Chan Sung (Forensic Engineering Department, National Forensic Service)
Kim, Jin Pyo (Forensic Engineering Department, National Forensic Service)
Park, Nam Gyu (Forensic Engineering Department, National Forensic Service)
Publication Information
Journal of Welding and Joining / v.34, no.5, 2016 , pp. 47-53 More about this Journal
Abstract
The aim of this study is to consider effect of weld elastic modulus on simulations of stress concentration and fatigue life for pressure vessel. The investigations include analysis with ADINA and WINLIFE softwares for whole body model about using condition of the boiler vessel. Values of weld elastic modulus were divided by 5 steps in butt weld area of the boiler vessel body. The stress concentration of the butt weld more was increased in case of higher elastic modulus of weld area because of higher difference of material properties between matrix and weld. It was concluded that the fatigue lives were decreased along increasing stress concentration due to high elastic modulus of weld. The matrix microstructure was estimated as pearlitic structure of ${\alpha}$ ferrite and pearlite. And the microstructures of welds along 5 steps of elastic modulus were estimated as bainitic fine pearlite and martensite as increasing elastic modulus.
Keywords
Weld elastic modulus; Whole body model; Stress concentration; Fatigue life; Microstructure;
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Times Cited By KSCI : 2  (Citation Analysis)
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