TY - GEN
T1 - Tip Timing Based Non-contact Vibration Measurement of Aero-engine Turbine Blades
AU - Liu, Meiru
AU - Gao, Weiqiang
AU - Xiao, Xiao
AU - Teng, Guangrong
AU - Ao, Chunyan
AU - Qiao, Baijie
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/15
Y1 - 2020/10/15
N2 - Non-contact vibration measurement based on tip timing has been widely used in aero-engine blade health monitoring. However, it is different to inspect the vibration of turbine blades with small size in high rotating speeds, temperature and pressure operation. To overcome the difficulty of aero-engine turbine blade measurement, firstly, the optical sensor with cooling channel is designed and a novel air-cooling method is proposed. Secondly, a disk for once-per-revolution (OPR) sensor placement is designed and the black paint is sprayed on the shaft. The OPR signal can be achieved by detecting the intensity change of light as the shaft rotates. Thirdly, the non-contact vibration measurement based on tip timing is conducted to monitor turbine blades, and the resonance frequencies, blade tip vibration amplitude and rotational speeds of blades are obtained. The test results show that the 1st bending mode resonance of the turbine blades occurred at about 8200r/min excited by engine order 12 and 9100r/min excited by engine order 11. Furthermore, the identified vibration parameters from the test have a good match with the results of the numerical calculation. It demonstrates the promise of the proposed non-contact vibration measurement technique based on blade tip timing for health monitoring of aero-engine turbine blades.
AB - Non-contact vibration measurement based on tip timing has been widely used in aero-engine blade health monitoring. However, it is different to inspect the vibration of turbine blades with small size in high rotating speeds, temperature and pressure operation. To overcome the difficulty of aero-engine turbine blade measurement, firstly, the optical sensor with cooling channel is designed and a novel air-cooling method is proposed. Secondly, a disk for once-per-revolution (OPR) sensor placement is designed and the black paint is sprayed on the shaft. The OPR signal can be achieved by detecting the intensity change of light as the shaft rotates. Thirdly, the non-contact vibration measurement based on tip timing is conducted to monitor turbine blades, and the resonance frequencies, blade tip vibration amplitude and rotational speeds of blades are obtained. The test results show that the 1st bending mode resonance of the turbine blades occurred at about 8200r/min excited by engine order 12 and 9100r/min excited by engine order 11. Furthermore, the identified vibration parameters from the test have a good match with the results of the numerical calculation. It demonstrates the promise of the proposed non-contact vibration measurement technique based on blade tip timing for health monitoring of aero-engine turbine blades.
KW - aero-engine turbine blade
KW - cooling channel
KW - non-contact vibration measurement
KW - once-per-revolution signal
KW - tip-timing
UR - https://www.scopus.com/pages/publications/85098588287
U2 - 10.1109/ICSMD50554.2020.9261728
DO - 10.1109/ICSMD50554.2020.9261728
M3 - 会议稿件
AN - SCOPUS:85098588287
T3 - International Conference on Sensing, Measurement and Data Analytics in the Era of Artificial Intelligence, ICSMD 2020 - Proceedings
SP - 546
EP - 550
BT - International Conference on Sensing, Measurement and Data Analytics in the Era of Artificial Intelligence, ICSMD 2020 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st International Conference on Sensing, Measurement and Data Analytics in the Era of Artificial Intelligence, ICSMD 2020
Y2 - 15 October 2020 through 17 October 2020
ER -