GB2016705A - Eddy Current Non Destructive Test Apparatus - Google Patents

Eddy Current Non Destructive Test Apparatus

Info

Publication number
GB2016705A
GB2016705A GB7907531A GB7907531A GB2016705A GB 2016705 A GB2016705 A GB 2016705A GB 7907531 A GB7907531 A GB 7907531A GB 7907531 A GB7907531 A GB 7907531A GB 2016705 A GB2016705 A GB 2016705A
Authority
GB
United Kingdom
Prior art keywords
eddy current
weld
bridge
tube
test apparatus
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
GB7907531A
Other versions
GB2016705B (en
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB7907531A priority Critical patent/GB2016705B/en
Publication of GB2016705A publication Critical patent/GB2016705A/en
Application granted granted Critical
Publication of GB2016705B publication Critical patent/GB2016705B/en
Expired 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
    • G01N27/9073—Recording measured data
    • G01N27/908—Recording measured data synchronously with scanning
    • 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
    • G01N27/904—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 with two or more sensors

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)

Abstract

The apparatus comprises a rotatable probe assembly having a pair of bridge connected eddy current sensors for interrogating a weld, such as the tube/tube sheet weld of a tube- in shell heat exchanger and electronic circuitry arranged to combine the bridge output with a simple voltage locus signal derived from a sine/cosine potentiometer associated with the probe assembly drive and to feed the combination signal to an oscilloscope or storage means. The bridge is connected to a buffer amplifier and one of the sensors may be associated with a flow free weld. <IMAGE>
GB7907531A 1978-03-13 1979-03-02 Eddy current nondestructive test apparatus Expired GB2016705B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7907531A GB2016705B (en) 1978-03-13 1979-03-02 Eddy current nondestructive test apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB984978 1978-03-13
GB7907531A GB2016705B (en) 1978-03-13 1979-03-02 Eddy current nondestructive test apparatus

Publications (2)

Publication Number Publication Date
GB2016705A true GB2016705A (en) 1979-09-26
GB2016705B GB2016705B (en) 1982-08-18

Family

ID=26243209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7907531A Expired GB2016705B (en) 1978-03-13 1979-03-02 Eddy current nondestructive test apparatus

Country Status (1)

Country Link
GB (1) GB2016705B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112975215A (en) * 2019-12-16 2021-06-18 大众汽车股份公司 Method for characterizing a weld

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112975215A (en) * 2019-12-16 2021-06-18 大众汽车股份公司 Method for characterizing a weld
US11543387B2 (en) 2019-12-16 2023-01-03 Volkswagen Aktiengesellschaft Method for characterizing a weld

Also Published As

Publication number Publication date
GB2016705B (en) 1982-08-18

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Legal Events

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