FR3097328B1 - Procédé, dispositif et programme de diagnostic de défauts de densification d’une pièce CMC - Google Patents

Procédé, dispositif et programme de diagnostic de défauts de densification d’une pièce CMC Download PDF

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Publication number
FR3097328B1
FR3097328B1 FR1906461A FR1906461A FR3097328B1 FR 3097328 B1 FR3097328 B1 FR 3097328B1 FR 1906461 A FR1906461 A FR 1906461A FR 1906461 A FR1906461 A FR 1906461A FR 3097328 B1 FR3097328 B1 FR 3097328B1
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France
Prior art keywords
densification
calculate
histogram
gray
faults
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FR1906461A
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FR3097328A1 (fr
Inventor
Jérémy Paul André Blachier
Gildas Garnier
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Safran SA
Safran Ceramics SA
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Safran SA
Safran Ceramics SA
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Priority to FR1906461A priority Critical patent/FR3097328B1/fr
Publication of FR3097328A1 publication Critical patent/FR3097328A1/fr
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/615—Specific applications or type of materials composite materials, multilayer laminates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38—Concrete; ceramics; glass; bricks
    • G01N33/388—Ceramics

Abstract

L’invention concerne un procédé de diagnostic de défauts de densification d’une pièce composite à matrice céramique, dans lequel on acquiert (E1) par un dispositif d’imagerie tomographique une image (I) tomographique de la pièce. On détermine (E2) pour une zone (Z) de l’image, un histogramme (H) des niveaux (NG) de gris, on calcule (E3) une loi (LN) de répartition des fréquences (f) des niveaux (NG) de gris, approchant l’histogramme (H), on calcule (E4) la fréquence théorique (fth) de la loi (LN) correspondant à un niveau (NGD) de gris prescrit de défaut de densification de la pièce, on calcule (E5) la fréquence expérimentale (fe) de l’histogramme (H), qui correspond au niveau (NGD), on calcule (E6) à partir de la fréquence expérimentale (fe) et de la fréquence théorique (fth) un facteur (A) d’anormalité de densification de la zone de l’image tomographique de la pièce composite à matrice céramique. Figure de l'abrégé : Figure 4
FR1906461A 2019-06-17 2019-06-17 Procédé, dispositif et programme de diagnostic de défauts de densification d’une pièce CMC Active FR3097328B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1906461A FR3097328B1 (fr) 2019-06-17 2019-06-17 Procédé, dispositif et programme de diagnostic de défauts de densification d’une pièce CMC

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1906461A FR3097328B1 (fr) 2019-06-17 2019-06-17 Procédé, dispositif et programme de diagnostic de défauts de densification d’une pièce CMC
FR1906461 2019-06-17

Publications (2)

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FR3097328A1 FR3097328A1 (fr) 2020-12-18
FR3097328B1 true FR3097328B1 (fr) 2021-05-14

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012165991A1 (fr) * 2011-05-31 2012-12-06 Schlumberger Holdings Limited Procédé de détermination de distribution spatiale et de concentration de composants de contraste dans un échantillon poreux et/ou hétérogène
FR3034339B1 (fr) * 2015-04-01 2017-11-24 Herakles Procede de controle de la repartition des fils d'une texture fibreuse

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