JPS6444845A - Eddy current flaw detection apparatus - Google Patents

Eddy current flaw detection apparatus

Info

Publication number
JPS6444845A
JPS6444845A JP62201705A JP20170587A JPS6444845A JP S6444845 A JPS6444845 A JP S6444845A JP 62201705 A JP62201705 A JP 62201705A JP 20170587 A JP20170587 A JP 20170587A JP S6444845 A JPS6444845 A JP S6444845A
Authority
JP
Japan
Prior art keywords
magnetizing coil
superconductive
coil
cooling material
inspected
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.)
Pending
Application number
JP62201705A
Other languages
Japanese (ja)
Inventor
Kazuo Takaku
Kimio Kanda
Akisuke Naruse
Hiroto Uozumi
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.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi 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 Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP62201705A priority Critical patent/JPS6444845A/en
Publication of JPS6444845A publication Critical patent/JPS6444845A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To saturate a body to be inspected magnetically, to achieve the miniaturization and wt. reduction of a detection part, to prevent the lowering of a noise level and to enhance reliability, by using a superconductive magnetizing coil in a DC magnetizing coil part. CONSTITUTION:A flaw detection apparatus is constituted of a superconductive magnetizing coil 1 composed, for example. of yttrium showing superconductivity at high temp., a cooling material 2 such as liquid nitrogen cooling the coil 1, a cooling material holding container 3 constituted of a heat insulating material, a cooling material supply apparatus 4, a power source 5, detection coils 6, 7, an oscillator 9, a bridge circuit 10, an amplifier 11, a phase shifter 12, a detector 13, a display device 14 and a recorder 15. The superconductive magnetizing coil 1 can form current density higher than that of a usual magnetizing coil and high flux density which can not achieved by the usual magnetizing coil can be obtained. By this constitution, since a body 8 to be inspected can be magnetically saturated by supplying a high magnetic field, noise due to difference in a magnetic characteristic is reduced and a S/N ratio can be improved.
JP62201705A 1987-08-14 1987-08-14 Eddy current flaw detection apparatus Pending JPS6444845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201705A JPS6444845A (en) 1987-08-14 1987-08-14 Eddy current flaw detection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201705A JPS6444845A (en) 1987-08-14 1987-08-14 Eddy current flaw detection apparatus

Publications (1)

Publication Number Publication Date
JPS6444845A true JPS6444845A (en) 1989-02-17

Family

ID=16445555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201705A Pending JPS6444845A (en) 1987-08-14 1987-08-14 Eddy current flaw detection apparatus

Country Status (1)

Country Link
JP (1) JPS6444845A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011039019A (en) * 2009-08-14 2011-02-24 International Institute Of Universality Superconductive sensor for electromagnetic diagnostic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011039019A (en) * 2009-08-14 2011-02-24 International Institute Of Universality Superconductive sensor for electromagnetic diagnostic apparatus

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