FR2458806A1 - Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique - Google Patents

Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique Download PDF

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Publication number
FR2458806A1
FR2458806A1 FR7914466A FR7914466A FR2458806A1 FR 2458806 A1 FR2458806 A1 FR 2458806A1 FR 7914466 A FR7914466 A FR 7914466A FR 7914466 A FR7914466 A FR 7914466A FR 2458806 A1 FR2458806 A1 FR 2458806A1
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FR
France
Prior art keywords
sheet
support
current
corona discharge
paper
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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.)
Granted
Application number
FR7914466A
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English (en)
French (fr)
Other versions
FR2458806B1 (enrdf_load_html_response
Inventor
Daniel Le Fur
Robert Haug
Max Goldman
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.)
Electricite de France SA
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Electricite de France SA
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.)
Filing date
Publication date
Application filed by Electricite de France SA filed Critical Electricite de France SA
Priority to FR7914466A priority Critical patent/FR2458806A1/fr
Publication of FR2458806A1 publication Critical patent/FR2458806A1/fr
Application granted granted Critical
Publication of FR2458806B1 publication Critical patent/FR2458806B1/fr
Granted legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws
    • G01N27/205—Investigating the presence of flaws in insulating materials

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR7914466A 1979-06-06 1979-06-06 Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique Granted FR2458806A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7914466A FR2458806A1 (fr) 1979-06-06 1979-06-06 Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7914466A FR2458806A1 (fr) 1979-06-06 1979-06-06 Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique

Publications (2)

Publication Number Publication Date
FR2458806A1 true FR2458806A1 (fr) 1981-01-02
FR2458806B1 FR2458806B1 (enrdf_load_html_response) 1984-11-16

Family

ID=9226276

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7914466A Granted FR2458806A1 (fr) 1979-06-06 1979-06-06 Perfectionnements aux procedes et dispositifs de detection d'inhomogeneites dans une feuille de materiau dielectrique

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FR (1) FR2458806A1 (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620145A (en) * 1984-08-20 1986-10-28 General Electric Company Non-destructive detection of voids in plastic materials
WO1995017666A1 (en) * 1993-12-22 1995-06-29 Lev Borisovich Shelyakin Device for identifying deformed areas in the surfaces of electrically conducting bodies
WO2003027657A3 (en) * 2001-09-28 2004-02-12 Polaroid Corp Method and apparatus for detecting pinhole defects in a dielectric layer
WO2007107636A1 (en) * 2006-03-17 2007-09-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Apparatuses and method for studying material properties

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701336A (en) * 1951-09-15 1955-02-01 Gen Electric Flaw detector
US2856582A (en) * 1955-05-24 1958-10-14 Gen Electric Method and apparatus for measuring thickness
US3611122A (en) * 1969-09-17 1971-10-05 Henry D Pahl Jr Testing of wire insulation by corona discharge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701336A (en) * 1951-09-15 1955-02-01 Gen Electric Flaw detector
US2856582A (en) * 1955-05-24 1958-10-14 Gen Electric Method and apparatus for measuring thickness
US3611122A (en) * 1969-09-17 1971-10-05 Henry D Pahl Jr Testing of wire insulation by corona discharge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620145A (en) * 1984-08-20 1986-10-28 General Electric Company Non-destructive detection of voids in plastic materials
WO1995017666A1 (en) * 1993-12-22 1995-06-29 Lev Borisovich Shelyakin Device for identifying deformed areas in the surfaces of electrically conducting bodies
WO2003027657A3 (en) * 2001-09-28 2004-02-12 Polaroid Corp Method and apparatus for detecting pinhole defects in a dielectric layer
US6707055B2 (en) 2001-09-28 2004-03-16 Polaroid Corporation Method and apparatus for detecting pinhole defects in a dielectric layer
WO2007107636A1 (en) * 2006-03-17 2007-09-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Apparatuses and method for studying material properties

Also Published As

Publication number Publication date
FR2458806B1 (enrdf_load_html_response) 1984-11-16

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