Research of the delaying crack propagation on an aero-engine rotor
by Jun Liu; Yong Fan; LiangFu Wang; Jianen Chen; Xiaofeng Wang; Zhenchang Liu
International Journal of Mechatronics and Automation (IJMA), Vol. 5, No. 4, 2016

Abstract: Due to the action of alternating loads, the micro defects of rotor's materials and the micro traumas in the mechanic processing would easily cause the crack propagation and even the catastrophic accidents. Vibration characteristics of the rotor system of an aero-engine, the crack's breathing states and breathing periods are investigated with different parameters including the rotational speed, the crack angles, the crack depth and nonlinear parameters. By comparing influences of the crack breathing states caused by changes of different parameters, the paper summarised the mutation regulations of the crack breathing states in the synchronous and verified the feasibility of the mechanism on delaying the crack propagation. The paper also proposed a novel method of the delaying crack propagation, in this method the electro-magnetic actuator (EMA) was used to realise the vibration controlling states and to delay crack propagation in the running process of the nonlinear cracked rotor in an aero-engine. The validity of the proposed method was verified through experiments.

Online publication date: Sun, 21-May-2017

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Mechatronics and Automation (IJMA):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com