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FR3105421B1 - Procédé de contrôle non destructif de fissures débouchantes - Google Patents

Procédé de contrôle non destructif de fissures débouchantes Download PDF

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Publication number
FR3105421B1
FR3105421B1 FR1915292A FR1915292A FR3105421B1 FR 3105421 B1 FR3105421 B1 FR 3105421B1 FR 1915292 A FR1915292 A FR 1915292A FR 1915292 A FR1915292 A FR 1915292A FR 3105421 B1 FR3105421 B1 FR 3105421B1
Authority
FR
France
Prior art keywords
signal
destructive testing
cracks
testing process
emerging cracks
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
FR1915292A
Other languages
English (en)
Other versions
FR3105421A1 (fr
Inventor
Mathieu Loïc Ducousso
Willem Félix Paul Jean-Marie Boutu
Hamded Merdji
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 SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Safran SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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 Commissariat a lEnergie Atomique CEA, Safran SA, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR1915292A priority Critical patent/FR3105421B1/fr
Publication of FR3105421A1 publication Critical patent/FR3105421A1/fr
Application granted granted Critical
Publication of FR3105421B1 publication Critical patent/FR3105421B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8883—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges involving the calculation of gauges, generating models

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  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

Ce procédé de contrôle non destructif de fissures débouchantes (3), comporte les étapes suivantes : Balayage (10) de la surface (4) de la structure (1) à inspecter à l’aide d’un éclairage cohérent (2) se réfléchissant vers un détecteur (6) ; Détection numérique (11) dans l’espace de Fourier d’une zone de réflexion d’un signal spéculaire (5a) et d’un signal diffracté (5b) ; Acquisition (14) de la ou des zones contenant un signal spéculaire (5a) et un signal diffracté (5b) par ptychographie de Fourier et avec recouvrement spatial ; Reconstruction de l’image (15) des zones de la structure (1) à inspecter pour lesquelles un signal diffracté (5b) a été détecté à partir des acquisitions précédentes à l’aide d’un algorithme numérique ; Expertise (16) de l’image reconstruite de la structure (1) pour identifier des fissures débouchantes (3). Figure pour l’abrégé : Fig 1
FR1915292A 2019-12-20 2019-12-20 Procédé de contrôle non destructif de fissures débouchantes Active FR3105421B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1915292A FR3105421B1 (fr) 2019-12-20 2019-12-20 Procédé de contrôle non destructif de fissures débouchantes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1915292A FR3105421B1 (fr) 2019-12-20 2019-12-20 Procédé de contrôle non destructif de fissures débouchantes
FR1915292 2019-12-20

Publications (2)

Publication Number Publication Date
FR3105421A1 FR3105421A1 (fr) 2021-06-25
FR3105421B1 true FR3105421B1 (fr) 2024-03-15

Family

ID=70613988

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1915292A Active FR3105421B1 (fr) 2019-12-20 2019-12-20 Procédé de contrôle non destructif de fissures débouchantes

Country Status (1)

Country Link
FR (1) FR3105421B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465371A (en) * 1979-08-06 1984-08-14 Grumman Aerospace Corporation Optical flaw detection method and apparatus
JP2018504577A (ja) * 2014-12-22 2018-02-15 カリフォルニア インスティチュート オブ テクノロジー 厚膜サンプル用落射照明フーリエタイコグラフィ撮像

Also Published As

Publication number Publication date
FR3105421A1 (fr) 2021-06-25

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