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FR3123718B1 - DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT - Google Patents

DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT Download PDF

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Publication number
FR3123718B1
FR3123718B1 FR2105803A FR2105803A FR3123718B1 FR 3123718 B1 FR3123718 B1 FR 3123718B1 FR 2105803 A FR2105803 A FR 2105803A FR 2105803 A FR2105803 A FR 2105803A FR 3123718 B1 FR3123718 B1 FR 3123718B1
Authority
FR
France
Prior art keywords
white noise
blade
eigenmodes
determining
deformations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR2105803A
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French (fr)
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FR3123718A1 (en
Inventor
Jérémy Jacques Attilio Fanelli
Eric Jacques Delcoigne
Lucie Marie Ida Lanciaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
Safran Aircraft Engines SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Safran Aircraft Engines SAS filed Critical Safran Aircraft Engines SAS
Priority to FR2105803A priority Critical patent/FR3123718B1/en
Publication of FR3123718A1 publication Critical patent/FR3123718A1/en
Application granted granted Critical
Publication of FR3123718B1 publication Critical patent/FR3123718B1/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/14—Testing gas-turbine engines or jet-propulsion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0016—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of aircraft wings or blades
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L’invention concerne un dispositif (50) de détermination des modes propres d’un élément (22) de turbomachine comportant des aubes (34), le dispositif comportant : un système (52) de mesure des déformations d’au moins une aube (34) configuré pour délivrer des informations représentatives desdites déformations des aubes, le système de mesure comportant au moins un capteur des déformations (54) agencé sur la au moins une aube;un système de génération (60) configuré pour générer un bruit blanc (62) sur une bande de fréquences d’excitation en direction d’au moins une aube équipée d’un capteur, le bruit blanc étant adapté pour faire entrer l’aube en résonance ;une unité de traitement (70) configurée pour déterminer l’évolution des modes propres réels (MPR) de l’aube en fonction des fréquences d’excitation du bruit blanc à partir des informations représentatives des déformations de l’aube soumise au bruit blanc. Figure pour l'abrégé : Figure 4The invention relates to a device (50) for determining the natural modes of a turbomachine element (22) comprising blades (34), the device comprising: a system (52) for measuring the deformations of at least one blade ( 34) configured to deliver information representative of said deformations of the blades, the measurement system comprising at least one deformation sensor (54) arranged on the at least one blade;a generation system (60) configured to generate white noise (62 ) over an excitation frequency band in the direction of at least one blade equipped with a sensor, the white noise being adapted to bring the blade into resonance;a processing unit (70) configured to determine the evolution real eigenmodes (MPR) of the blade as a function of the white noise excitation frequencies from information representative of the deformations of the blade subjected to the white noise. Figure for abstract: Figure 4

FR2105803A 2021-06-02 2021-06-02 DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT Active FR3123718B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2105803A FR3123718B1 (en) 2021-06-02 2021-06-02 DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2105803 2021-06-02
FR2105803A FR3123718B1 (en) 2021-06-02 2021-06-02 DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT

Publications (2)

Publication Number Publication Date
FR3123718A1 FR3123718A1 (en) 2022-12-09
FR3123718B1 true FR3123718B1 (en) 2023-07-14

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FR2105803A Active FR3123718B1 (en) 2021-06-02 2021-06-02 DEVICE FOR DETERMINING THE eigenmodes of a TURBOMACHINE ELEMENT BY EMISSION OF WHITE NOISE AND DEVICE FOR VIBRATIONAL CHARACTERIZATION OF THE ELEMENT

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022133376A1 (en) * 2022-12-15 2024-06-20 MTU Aero Engines AG METHOD FOR MEASURING A COMPONENT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3071059B1 (en) * 2017-09-13 2021-05-21 Safran Aircraft Engines VIBRATORY ANALYSIS DETECTION SYSTEM FOR DAMAGE AFFECTING A PROPELLER HUB
RU2673950C1 (en) * 2018-01-19 2018-12-03 Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" Method for determining forms of vibrations of rotating wheels of turbomachines

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Publication number Publication date
FR3123718A1 (en) 2022-12-09

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