公开(公告)号：US20200333178A1

公开(公告)日：2020-10-22

申请号：US16843965

申请日：2020-04-09

Applicant: Purdue Research Foundation

Inventor： Nicole Leanne Key ,  Yujun Leng ,  Nicholas Joseph Kormanik, III ,  Fangyuan Lou ,  Douglas Ryan Matthews

IPC: G01H5/00 ,  G01H1/00 ,  F01D21/00

Abstract: The present disclosure relates to a novel method to monitor rotor blade vibration using unsteady casing pressure. The novel method applies a non-intrusive blade vibration monitoring technique by using an array of unsteady pressure sensors flush-mounted in the casing of a multistage axial compressor. The novel method comprises using spinning mode theory to obtain frequency and nodal diameter information for all pressure waves that can be identified and determining any of the pressure waves that is associated with blade vibration.

公开(公告)号：US11199437B2

公开(公告)日：2021-12-14

申请号：US16843965

申请日：2020-04-09

Applicant: Purdue Research Foundation

Inventor： Nicole Leanne Key ,  Yujun Leng ,  Nicholas Joseph Kormanik, III ,  Fangyuan Lou ,  Douglas Ryan Matthews

IPC: G01H5/00 ,  F01D21/00 ,  G01H1/00 ,  G01H3/08 ,  F01D17/08 ,  F01D5/26 ,  F01D21/14

Abstract: A method to monitor rotor blade vibration using unsteady casing pressure. The method applies a non-intrusive blade vibration monitoring technique by using an array of unsteady pressure sensors which may be flush-mounted in the casing of a compressor. The method comprises using spinning mode theory and temporal-spatial analysis to obtain frequency and nodal diameter information of spinning pressure waves associated with the rotor blade vibration. An example of the compressor can be a multistage axial compressor.