JPS5536770A - Electrostatic capacity type flaw detection method and its device - Google Patents

Electrostatic capacity type flaw detection method and its device

Info

Publication number
JPS5536770A
JPS5536770A JP11001878A JP11001878A JPS5536770A JP S5536770 A JPS5536770 A JP S5536770A JP 11001878 A JP11001878 A JP 11001878A JP 11001878 A JP11001878 A JP 11001878A JP S5536770 A JPS5536770 A JP S5536770A
Authority
JP
Japan
Prior art keywords
condenser
electrostatic capacity
detection method
flaw detection
capacity type
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.)
Granted
Application number
JP11001878A
Other languages
Japanese (ja)
Other versions
JPS627498B2 (en
Inventor
Yoshitoshi Yotsutsuji
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.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
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 Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Priority to JP11001878A priority Critical patent/JPS5536770A/en
Publication of JPS5536770A publication Critical patent/JPS5536770A/en
Publication of JPS627498B2 publication Critical patent/JPS627498B2/ja
Granted legal-status Critical Current

Links

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE: To quantitatively detect the locations and extent of flaws and corrosion, by forming a condenser to two fixed electrodes mounted onto an insulator, and by moving the condenser along matter to be measured.
CONSTITUTION: A condenser C is made up from two fixed electrodes 2, 3 installed onto an insulator 1 in bakelite, etc. at a fixed interval. The condenser C is shifted in parallel with a surface in the axial direction along an inner surface of matter to be inspected such as a tube for a heat exchanger. When the condenser C locomotes up to corrosion portions, electrostatic capacity among the rings 2, 3 and the tube changes.
COPYRIGHT: (C)1980,JPO&Japio
JP11001878A 1978-09-07 1978-09-07 Electrostatic capacity type flaw detection method and its device Granted JPS5536770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11001878A JPS5536770A (en) 1978-09-07 1978-09-07 Electrostatic capacity type flaw detection method and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11001878A JPS5536770A (en) 1978-09-07 1978-09-07 Electrostatic capacity type flaw detection method and its device

Publications (2)

Publication Number Publication Date
JPS5536770A true JPS5536770A (en) 1980-03-14
JPS627498B2 JPS627498B2 (en) 1987-02-17

Family

ID=14525029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11001878A Granted JPS5536770A (en) 1978-09-07 1978-09-07 Electrostatic capacity type flaw detection method and its device

Country Status (1)

Country Link
JP (1) JPS5536770A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008224409A (en) * 2007-03-13 2008-09-25 Railway Technical Res Inst Capacitance sensor for nondestructive inspection

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0280800A (en) * 1988-09-16 1990-03-20 Mitsubishi Heavy Ind Ltd Segment transporter
JPH03108100U (en) * 1990-02-20 1991-11-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008224409A (en) * 2007-03-13 2008-09-25 Railway Technical Res Inst Capacitance sensor for nondestructive inspection

Also Published As

Publication number Publication date
JPS627498B2 (en) 1987-02-17

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