JPS6478160A - Device for detecting deterioration of metal material - Google Patents

Device for detecting deterioration of metal material

Info

Publication number
JPS6478160A
JPS6478160A JP62234828A JP23482887A JPS6478160A JP S6478160 A JPS6478160 A JP S6478160A JP 62234828 A JP62234828 A JP 62234828A JP 23482887 A JP23482887 A JP 23482887A JP S6478160 A JPS6478160 A JP S6478160A
Authority
JP
Japan
Prior art keywords
magnetism
deterioration
metal material
residual magnetism
measured
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
JP62234828A
Other languages
Japanese (ja)
Inventor
Kunio Hasegawa
Masahiro Otaka
Makoto Hayashi
Tasuku Shimizu
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 Ltd
Original Assignee
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 Ltd filed Critical Hitachi Ltd
Priority to JP62234828A priority Critical patent/JPS6478160A/en
Priority to US07/247,414 priority patent/US5059903A/en
Priority to DE3856407T priority patent/DE3856407T2/en
Priority to DE3854028T priority patent/DE3854028T2/en
Priority to EP94119232A priority patent/EP0646790B1/en
Priority to EP88115467A priority patent/EP0308888B1/en
Publication of JPS6478160A publication Critical patent/JPS6478160A/en
Priority to US07/611,426 priority patent/US5134368A/en
Priority to US07/738,240 priority patent/US5414356A/en
Pending legal-status Critical Current

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  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

PURPOSE:To non-destructively and simply detect the degree of embrittlement of a metal material by detecting the residual magnetism formed by loading a magnetic field to a body to be measured, and thereafter, unloading it, by a high sensitivity magnetism detector, and deciding the degree of deterioration from a data base for showing the relation of a variation of the residual magnetism and the deterioration of the metal material derived in advance. CONSTITUTION:First of all, a saturation magnetic field is given to a body to be measured 1, and thereafter, the magnetic field is eliminated. Subsequently, a magnetism detecting sensor 7 of high sensitivity is brought to a part where the residual magnetism of the body is generated, and the residual magnetism is measured by a magnetism detecting device 8. A value of the residual magnetism is outputted to an external storage device 5 and an external recorder 6. Also, a data base for showing the relation of deterioration of the residual magnetism and the metal material derived in advance is recorded, and from this relation, a breakdown toughness value for showing the degree of deterioration of the body to be measured 1 is calculated by using a computer 4.
JP62234828A 1987-09-21 1987-09-21 Device for detecting deterioration of metal material Pending JPS6478160A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP62234828A JPS6478160A (en) 1987-09-21 1987-09-21 Device for detecting deterioration of metal material
US07/247,414 US5059903A (en) 1987-09-21 1988-09-21 Method and apparatus utilizing a magnetic field for detecting degradation of metal material
DE3856407T DE3856407T2 (en) 1987-09-21 1988-09-21 Method and device for the detection of embrittlement of metals
DE3854028T DE3854028T2 (en) 1987-09-21 1988-09-21 Apparatus and method for the detection of embrittlement of a measurement object.
EP94119232A EP0646790B1 (en) 1987-09-21 1988-09-21 Method and apparatus for detecting embrittlement of metal material
EP88115467A EP0308888B1 (en) 1987-09-21 1988-09-21 Method and apparatus for detecting embrittlement of a measuring object
US07/611,426 US5134368A (en) 1987-09-21 1990-11-08 Apparatus for magnetically detecting degradation of metal material using superconductor sensor system and reference material data comparison
US07/738,240 US5414356A (en) 1987-09-21 1991-07-30 Fluxmeter including squid and pickup coil with flux guiding core and method for sensing degree of deterioration of an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62234828A JPS6478160A (en) 1987-09-21 1987-09-21 Device for detecting deterioration of metal material

Publications (1)

Publication Number Publication Date
JPS6478160A true JPS6478160A (en) 1989-03-23

Family

ID=16977019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62234828A Pending JPS6478160A (en) 1987-09-21 1987-09-21 Device for detecting deterioration of metal material

Country Status (1)

Country Link
JP (1) JPS6478160A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021502558A (en) * 2017-11-13 2021-01-28 エクソンモービル リサーチ アンド エンジニアリング カンパニーＥｘｘｏｎ Ｒｅｓｅａｒｃｈ Ａｎｄ Ｅｎｇｉｎｅｅｒｉｎｇ Ｃｏｍｐａｎｙ Non-destructive material inspection methods and systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021502558A (en) * 2017-11-13 2021-01-28 エクソンモービル リサーチ アンド エンジニアリング カンパニーＥｘｘｏｎ Ｒｅｓｅａｒｃｈ Ａｎｄ Ｅｎｇｉｎｅｅｒｉｎｇ Ｃｏｍｐａｎｙ Non-destructive material inspection methods and systems

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