GB2281399B - Flaw detector for metal material - Google Patents

Flaw detector for metal material

Info

Publication number
GB2281399B
GB2281399B GB9421618A GB9421618A GB2281399B GB 2281399 B GB2281399 B GB 2281399B GB 9421618 A GB9421618 A GB 9421618A GB 9421618 A GB9421618 A GB 9421618A GB 2281399 B GB2281399 B GB 2281399B
Authority
GB
United Kingdom
Prior art keywords
metal material
flaw detector
flaw
detector
metal
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 - Fee Related
Application number
GB9421618A
Other versions
GB2281399A (en
Inventor
Yasuharu Hosohara
Kiwamu Suzuki
Shigeru Fujiwara
Toshihide Kawabe
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.)
CHUGOKU X RAY CO Ltd
Tokyo Gas Co Ltd
CXR Co Ltd
Original Assignee
CHUGOKU X RAY CO Ltd
Tokyo Gas Co Ltd
CXR Co 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
Priority claimed from JP3090685A external-priority patent/JPH04323550A/en
Priority claimed from JP12129191A external-priority patent/JP3152676B2/en
Application filed by CHUGOKU X RAY CO Ltd, Tokyo Gas Co Ltd, CXR Co Ltd filed Critical CHUGOKU X RAY CO Ltd
Priority claimed from GB9116817A external-priority patent/GB2255184B/en
Publication of GB2281399A publication Critical patent/GB2281399A/en
Application granted granted Critical
Publication of GB2281399B publication Critical patent/GB2281399B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/9013—Arrangements for scanning
    • G01N27/902—Arrangements for scanning by moving the sensors
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB9421618A 1991-04-22 1991-08-05 Flaw detector for metal material Expired - Fee Related GB2281399B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3090685A JPH04323550A (en) 1991-04-22 1991-04-22 Metallic material flaw detection device
JP12129191A JP3152676B2 (en) 1991-05-27 1991-05-27 Metal remote field eddy current flaw detector
GB9116817A GB2255184B (en) 1991-04-22 1991-08-05 Flaw detector for metal material

Publications (2)

Publication Number Publication Date
GB2281399A GB2281399A (en) 1995-03-01
GB2281399B true GB2281399B (en) 1995-08-16

Family

ID=27265799

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9421617A Expired - Fee Related GB2281398B (en) 1991-04-22 1991-08-05 Flaw detector for metal material
GB9421618A Expired - Fee Related GB2281399B (en) 1991-04-22 1991-08-05 Flaw detector for metal material

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9421617A Expired - Fee Related GB2281398B (en) 1991-04-22 1991-08-05 Flaw detector for metal material

Country Status (1)

Country Link
GB (2) GB2281398B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5821747A (en) * 1997-01-08 1998-10-13 Queen's University At Kingston Method and apparatus for scanning a plurality of parallel pipes for flaws using tube-to-tube through transmissions
GB0403164D0 (en) * 2004-02-12 2004-03-17 Dynalog Electronics Ltd Pipeline surveying

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1329302A (en) * 1970-09-16 1973-09-05 Nippon Kokan Kk Eddy current flaw detector apparatus
GB2014317A (en) * 1978-02-13 1979-08-22 Nippon Kokan Kk Surface Defect Detecting Apparatus for Round or Cylindrical Metallic Material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2142351C3 (en) * 1971-08-24 1979-05-03 Karl Deutsch Pruef- Und Messgeraetebau, 5600 Wuppertal Device for checking the mix-up and structure of ferromagnetic materials
CA1201481A (en) * 1982-10-22 1986-03-04 Majesty (Her) In Right Of Canada As Represented By Atomic Energy Of Canada Limited/L'energie Atomique Du Canada Limitee Eddy current probe with defect-noise discrimination
US4849693A (en) * 1988-02-29 1989-07-18 Battelle Memorial Institute Automated measurement system employing eddy currents to adjust probe position and determine metal hardness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1329302A (en) * 1970-09-16 1973-09-05 Nippon Kokan Kk Eddy current flaw detector apparatus
GB2014317A (en) * 1978-02-13 1979-08-22 Nippon Kokan Kk Surface Defect Detecting Apparatus for Round or Cylindrical Metallic Material

Also Published As

Publication number Publication date
GB2281398A (en) 1995-03-01
GB2281398B (en) 1995-08-16
GB2281399A (en) 1995-03-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020805