JPS57184907A - Method of detecting minute deformation strain using magnetic bubble - Google Patents

Method of detecting minute deformation strain using magnetic bubble

Info

Publication number
JPS57184907A
JPS57184907A JP6985781A JP6985781A JPS57184907A JP S57184907 A JPS57184907 A JP S57184907A JP 6985781 A JP6985781 A JP 6985781A JP 6985781 A JP6985781 A JP 6985781A JP S57184907 A JPS57184907 A JP S57184907A
Authority
JP
Japan
Prior art keywords
measured
magnetic field
magnetic
extinction
deformation strain
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
JP6985781A
Other languages
Japanese (ja)
Other versions
JPS6316681B2 (en
Inventor
Itaru Otake
Hiroshi Inoue
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6985781A priority Critical patent/JPS57184907A/en
Publication of JPS57184907A publication Critical patent/JPS57184907A/en
Publication of JPS6316681B2 publication Critical patent/JPS6316681B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties

Abstract

PURPOSE:To detect a deformation strain produced at a minute area, by a method wherein a magnetic garnet, whereon lattice-shaped bubble are formed, is firmly adhered to an object to be measured to detect an extinction magnetic field value of a magnetic valve. CONSTITUTION:A garnet chip 3 is firmly adhered to an object to be measured by the use of a silicon adhesive agent so that no adhesion strain is produced. A uniaxial anisotropic magnetic field Hk is caused to act on the chip 3 beforehand to form a large number of lattic-shaped bubble, and the Hk and an extinction magnetic field Ho are measured. While a magnetic field is being vertically applied to the chip surface, the extinction magnetic field Ho is measured over a-b using a polarized microscope to find a change amount DELTAHo. The DELTAHo changes in proportion to a stress in a magnetic garnet crystal film, and as a result, a deformation strain of an object to be measured is measured with a position accuracy of several tens mum.
JP6985781A 1981-05-08 1981-05-08 Method of detecting minute deformation strain using magnetic bubble Granted JPS57184907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6985781A JPS57184907A (en) 1981-05-08 1981-05-08 Method of detecting minute deformation strain using magnetic bubble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6985781A JPS57184907A (en) 1981-05-08 1981-05-08 Method of detecting minute deformation strain using magnetic bubble

Publications (2)

Publication Number Publication Date
JPS57184907A true JPS57184907A (en) 1982-11-13
JPS6316681B2 JPS6316681B2 (en) 1988-04-11

Family

ID=13414892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6985781A Granted JPS57184907A (en) 1981-05-08 1981-05-08 Method of detecting minute deformation strain using magnetic bubble

Country Status (1)

Country Link
JP (1) JPS57184907A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002319A1 (en) * 2013-07-04 2015-01-08 ローム株式会社 Stress sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002319A1 (en) * 2013-07-04 2015-01-08 ローム株式会社 Stress sensor
JP2015014489A (en) * 2013-07-04 2015-01-22 ローム株式会社 Stress sensor

Also Published As

Publication number Publication date
JPS6316681B2 (en) 1988-04-11

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