CA924778A - Eddy current flaw detector - Google Patents

Eddy current flaw detector

Info

Publication number
CA924778A
CA924778A CA128176A CA128176A CA924778A CA 924778 A CA924778 A CA 924778A CA 128176 A CA128176 A CA 128176A CA 128176 A CA128176 A CA 128176A CA 924778 A CA924778 A CA 924778A
Authority
CA
Canada
Prior art keywords
eddy current
flaw detector
current flaw
detector
eddy
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.)
Expired
Application number
CA128176A
Other languages
English (en)
Other versions
CA128176S (en
Inventor
W. Judd Tyler
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.)
Republic Steel Corp
Original Assignee
Republic Steel Corp
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 Republic Steel Corp filed Critical Republic Steel Corp
Application granted granted Critical
Publication of CA924778A publication Critical patent/CA924778A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
CA128176A 1970-11-18 1971-11-18 Eddy current flaw detector Expired CA924778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9057170A 1970-11-18 1970-11-18

Publications (1)

Publication Number Publication Date
CA924778A true CA924778A (en) 1973-04-17

Family

ID=22223370

Family Applications (1)

Application Number Title Priority Date Filing Date
CA128176A Expired CA924778A (en) 1970-11-18 1971-11-18 Eddy current flaw detector

Country Status (7)

Country Link
US (1) US3688186A (pt)
JP (1) JPS5224878B1 (pt)
AU (1) AU456274B2 (pt)
CA (1) CA924778A (pt)
FR (1) FR2114829A5 (pt)
GB (1) GB1352758A (pt)
IT (1) IT945016B (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2722498C3 (de) * 1977-05-18 1982-02-04 Walter Ing.(Grad.) 8728 Hassfurt Voll Einrichtung an einem Kraftfahrzeug zur Anzeige eines Mindestabstandes
DE2722511A1 (de) * 1977-05-18 1978-11-30 Voll Walter Metallsuchgeraet
US4207520A (en) * 1978-04-06 1980-06-10 The United States Of America As Represented By The Secretary Of The Air Force Multiple frequency digital eddy current inspection system
DE3128187A1 (de) * 1981-07-16 1983-02-03 Joachim 8068 Pfaffenhofen Sieg Opto-elektronisches bauelement
GB2141234B (en) * 1983-06-07 1986-11-12 Mo Energeticheskij Institut Eddy-current flaw detector
CN101473187B (zh) * 2006-06-23 2011-12-07 Skf公司 振动和状态监控系统及其部件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267884A (en) * 1939-10-25 1941-12-30 Magnetic Analysis Corp Variable feedback system
US2832040A (en) * 1954-12-07 1958-04-22 Republic Steel Corp Direct reading seam depth indicator
US3344668A (en) * 1964-07-30 1967-10-03 Honeywell Inc Control apparatus
US3469204A (en) * 1967-09-14 1969-09-23 Whittaker Corp Proximity sensitive on-off oscillator switch circuit

Also Published As

Publication number Publication date
AU3589871A (en) 1973-05-24
FR2114829A5 (pt) 1972-06-30
JPS5224878B1 (pt) 1977-07-04
DE2157059B2 (de) 1976-11-11
AU456274B2 (en) 1974-11-25
IT945016B (it) 1973-05-10
GB1352758A (en) 1974-05-08
US3688186A (en) 1972-08-29
DE2157059A1 (de) 1972-05-31

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