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Quantification of creep stresses within HAZ in welded branch junctions
Author(s) -
Han J.J.,
Kim Y.J.,
Jerng D. W.,
Nikbin K.,
Dean D.
Publication year - 2015
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12223
Subject(s) - creep , welding , materials science , finite element method , context (archaeology) , structural engineering , composite material , engineering , geology , paleontology
This paper quantifies the mismatch effect in creep properties on creep stresses in the heat‐affected zone of welded branches using systematic elastic‐creep finite element analysis. It is found that the section‐averaged normalized stresses in the heat‐affected zone can be uniquely characterized by the mismatch factor in creep. The relationship is almost linear and is not so sensitive to the loading condition. Implication to practical creep life assessment of welded branch components is discussed in the context of the R5 procedure.