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http://dx.doi.org/10.5050/KSNVE.2010.20.11.1025

Fracture Mechanism of Gas Turbine Compressor Blades in a Combined Cycle Power Plant  

Yang, Kyeong-Hyeon (한국전력공사 전력연구원)
Song, Oh-Seop (충남대학교 기계공학과)
Cho, Cheul-Whan (한국전력공사 전력연구원)
Yun, Wan-No (한국전력공사 전력연구원)
Jung, Nam-Geun (한국전력공사 전력연구원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.11, 2010 , pp. 1025-1032 More about this Journal
Abstract
Gas turbine compressor blades used in a combined cycle power plant are possibly damaged and fractured during their operation. There are two possible causes of the failure of compressor blades; one is a defect of material quality which can be detected through some microscopic inspections for the fracture section, the other is high cycle fatigue problem caused by vibration and can be diagnosed by carrying out dynamic characteristics analysis for the blades. In this paper, in order to determine the cause of the failure of compressor blades in a combined cycle power plant, examination of the fracture section and the propagation mechanism of the crack via stress analysis are performed. Dynamic characteristics analysis via FRF estimation is also performed to identify the cause of failure.
Keywords
Combined Cycle Power Plant; Compressor Blade; High Cycle Fatigue; Nozzle Passing Frequency;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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