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Title:
METHOD AND SYSTEM FOR DETERMINING ONE OR MORE DEFECTS IN A ROTATING MACHINE OF AN AIRCRAFT
Document Type and Number:
WIPO Patent Application WO/2022/128717
Kind Code:
A1
Abstract:
A method for determining one or more defects in a rotating machine of an aircraft, the method comprising a step (ET1) of measuring at least one acoustic signal (Ai) and at least one vibratory signal (Vk) during the same operating phase of the rotating machine, a step (ET2) of converting each signal to an acoustic frequency spectrum, a step (ET3) of determining a set of frequencies of interest (JFI) in all the frequency spectra (SAi, SVk), a step of forming a defect spectrum base (DB_DEF), each defect spectrum (S_DEFm) comprising at least one frequency domain, each frequency domain being obtained by linear combination of frequencies of interest the weighting coefficients of which are predetermined, a step (ET5) of comparing so as to obtain a score (SCORE) and a step (ET6) of determining the defects in the rotating machine by analysing the scores (SCORE) obtained.

Inventors:
CAULE PATRICE (FR)
EDET ALEXANDRE (FR)
Application Number:
PCT/EP2021/084909
Publication Date:
June 23, 2022
Filing Date:
December 09, 2021
Export Citation:
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Assignee:
SAFRAN VENTILATION SYSTEMS (FR)
International Classes:
G01H1/00; G01M13/028; G01M15/14
Domestic Patent References:
WO2018222341A12018-12-06
WO2018222341A12018-12-06
Foreign References:
EP2693176A12014-02-05
FR2952177A12011-05-06
EP2693176A12014-02-05
FR2952177A12011-05-06
Attorney, Agent or Firm:
ARGYMA (FR)
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