FI762986A - FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL - Google Patents

FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL

Info

Publication number
FI762986A
FI762986A FI762986A FI762986A FI762986A FI 762986 A FI762986 A FI 762986A FI 762986 A FI762986 A FI 762986A FI 762986 A FI762986 A FI 762986A FI 762986 A FI762986 A FI 762986A
Authority
FI
Finland
Prior art keywords
magnetiskt
fel
foerfarande foer
foer maetning
maetning
Prior art date
Application number
FI762986A
Other languages
Finnish (fi)
Inventor
Seppo Tiitto
Olavi Sundstroem
Timo Koponen
Original Assignee
Kajaani Oy
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 Kajaani Oy filed Critical Kajaani Oy
Priority to FI762986A priority Critical patent/FI762986A/en
Priority to DE19772746477 priority patent/DE2746477A1/en
Priority to JP12519777A priority patent/JPS5386500A/en
Publication of FI762986A publication Critical patent/FI762986A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
    • 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
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
FI762986A 1976-10-20 1976-10-20 FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL FI762986A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI762986A FI762986A (en) 1976-10-20 1976-10-20 FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL
DE19772746477 DE2746477A1 (en) 1976-10-20 1977-10-15 Measurement of crystalline faults in magnetic material - uses analysis of noise signal generated by Barkhausen effect
JP12519777A JPS5386500A (en) 1976-10-20 1977-10-20 Method of measuring defects within magnetic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI762986A FI762986A (en) 1976-10-20 1976-10-20 FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL

Publications (1)

Publication Number Publication Date
FI762986A true FI762986A (en) 1978-04-21

Family

ID=8510353

Family Applications (1)

Application Number Title Priority Date Filing Date
FI762986A FI762986A (en) 1976-10-20 1976-10-20 FOERFARANDE FOER MAETNING AV FEL I MAGNETISKT MATERIAL

Country Status (3)

Country Link
JP (1) JPS5386500A (en)
DE (1) DE2746477A1 (en)
FI (1) FI762986A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837733C2 (en) * 1978-08-30 1984-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Method for the non-destructive determination of material conditions using the Barkhausen effect
FI813161L (en) * 1981-11-18 1981-11-21 Pekka Ruuskanen SAETT ATT DEFINIERA UTMATTNINGSHAOLLFASTHET HOS FERROMAGNETISKT MATERIAL UTAN ATT BRYTA MATERIALET
US4634976A (en) * 1983-05-05 1987-01-06 American Stress Technologies, Inc. Barkhausen noise method for stress and defect detecting in hard steel
NO162537C (en) * 1986-02-17 1990-01-10 Dam Patent A S PROCEDURE AND DEVICE FOR NON-DESTRUCTIVE MATERIAL TESTING.
DE59500739D1 (en) * 1994-05-20 1997-11-06 Fraunhofer Ges Forschung Process for non-destructive material testing
DE19601027C2 (en) * 1996-01-13 2003-04-17 Fraunhofer Ges Forschung Method for the analysis of Barkhausen noise curves of multiphase materials

Also Published As

Publication number Publication date
JPS5386500A (en) 1978-07-29
DE2746477A1 (en) 1978-04-27

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: KAJAANI OY