JPS5386500A - Method of measuring defects within magnetic material - Google Patents

Method of measuring defects within magnetic material

Info

Publication number
JPS5386500A
JPS5386500A JP12519777A JP12519777A JPS5386500A JP S5386500 A JPS5386500 A JP S5386500A JP 12519777 A JP12519777 A JP 12519777A JP 12519777 A JP12519777 A JP 12519777A JP S5386500 A JPS5386500 A JP S5386500A
Authority
JP
Japan
Prior art keywords
magnetic material
measuring defects
defects
measuring
magnetic
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
JP12519777A
Other languages
Japanese (ja)
Inventor
Teiito Sepo
Sundosutoreemu Orabi
Koponen Teimo
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.)
Kajaani Oy
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
Publication of JPS5386500A publication Critical patent/JPS5386500A/en
Pending legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
JP12519777A 1976-10-20 1977-10-20 Method of measuring defects within magnetic material Pending JPS5386500A (en)

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
JPS5386500A true JPS5386500A (en) 1978-07-29

Family

ID=8510353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12519777A Pending JPS5386500A (en) 1976-10-20 1977-10-20 Method of measuring defects within magnetic material

Country Status (3)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58501966A (en) * 1981-11-18 1983-11-17 ル−スカネン、ペツカ Method for non-destructively measuring fatigue strength of ferromagnetic materials
JPS6057247A (en) * 1983-05-05 1985-04-03 アメリカン　ストレス　テクノロジイ−ズ　インコ−ポレ−テツド Sensor for detector for stress and defect

Families Citing this family (4)

* 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
NO162537C (en) * 1986-02-17 1990-01-10 Dam Patent A S PROCEDURE AND DEVICE FOR NON-DESTRUCTIVE MATERIAL TESTING.
EP0683393B1 (en) * 1994-05-20 1997-10-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for non-destructive examination of materials
DE19601027C2 (en) * 1996-01-13 2003-04-17 Fraunhofer Ges Forschung Method for the analysis of Barkhausen noise curves of multiphase materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58501966A (en) * 1981-11-18 1983-11-17 ル−スカネン、ペツカ Method for non-destructively measuring fatigue strength of ferromagnetic materials
JPS6057247A (en) * 1983-05-05 1985-04-03 アメリカン　ストレス　テクノロジイ−ズ　インコ−ポレ−テツド Sensor for detector for stress and defect

Also Published As

Publication number Publication date
DE2746477A1 (en) 1978-04-27
FI762986A (en) 1978-04-21

Similar Documents

Publication Publication Date Title
JPS5299686A (en) Method of measuring erythrosedimentation
GB1556568A (en) Method and apparatus for measuring the mechanical characteristics of a material
JPS52128170A (en) Method of and apparatus for measuring dimensions of articles
JPS52143278A (en) Inspecting method for measuring appearance of mutation
JPS52123687A (en) Apparatus for and method of testing material
JPS5323672A (en) Method of continuously testing magnetic properties of belt material
JPS52148194A (en) Sampling of oflowing fluid material and method of and apparatus for measuring characteristics of same
JPS51126169A (en) Apparatus for measuring shape of colddrolled magnetic material
JPS5316685A (en) Method of and apparatus for magnetic inspection
JPS5341252A (en) Method of and apparatus for measuring characteristics of substance
JPS5223379A (en) Method of and sonde for measuring temperature
JPS52137370A (en) Method of measuring thickness of object
JPS5386500A (en) Method of measuring defects within magnetic material
JPS5289362A (en) Method of and apparatus for measuring buoyancy
JPS5344050A (en) Method of measuring movement of machines and piping
JPS5364008A (en) Method of making magnetic recording material
JPS5383671A (en) Detecting method of surface defects
JPS53143965A (en) Test method of coil
JPS537259A (en) Method of automatically measuring length
JPS5342064A (en) Method of making metal measure material
JPS5433076A (en) Method of measuring some parametors of thinnfilm magnetic material
JPS5377565A (en) Method of testing wattthour meter
JPS52139487A (en) Method of marking flaw position
JPS5471699A (en) Method of making magnetic recording material
JPS5323658A (en) Method of measuring moving distance of magnetic substance