Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2003.04a
- /
- Pages.752-757
- /
- 2003
Vibration Analysis for LP Turbine Blade Damage
저압터빈 블레이드 손상에 대한 진동 해석
-
Kim, Hee-Soo
(KEPRI)
;
-
Bae, Yong-Chae
(KEPRI)
;
- Kim, Yeon-Hwan (KEPRI) ;
- Lee, Hyun (KEPRI) ;
- Kim, Sung-Hwi (KEPRI)
-
김희수
(한국전력공사 전력연구원)
;
-
배용채
(한국전력공사 전력연구원)
;
- 김연환 (한국전력공사 전력연구원) ;
- 이현 (한국전력공사 전력연구원) ;
- 김성휘 (한국전력공사 전력연구원)
- Published : 2003.04.23
Abstract
The steady stress, modal analysis for the damaged blade was carried out to evaluate the integrity of LP 4 blade row. As a result, 4 dangerous modes for LP blade row were found in the interference diagram and it was confirmed that the nozzle passing frequency has nothing to do with the blade failure. And then the dynamic stress are analysed for the 4 dangerous modes. There are some points far out of maximum allowable stress in the cover and tenon. Therefore the blade is not safe according to the Goodman judgement. So the manufacturer have modified the design of cover and tenon. Until now, the power plant is being operated without special problems.
Keywords