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최우성(W.S. Choi),윤완노(W.N. Yun),강명수(M.S. Kang) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
A gas turbine is called a combustion turbine and has an upstream compressor coupled to a downstream turbine, and a combustion chamber. Several cracks were oftenly observed at flange area between compressor casing and turbine casing in case of Westinghouse 501F series gas turbine. This component was made 1Cr1Mo0.25V steel such as conventional steam turbine casing. In this study, heat transfer and stress analysis using finite element analysis was performed in order to identify causes of flange cracking failure. Also, repairing method for effective maintenance was proposed.