ZA782413B - Working method and apparatus for the examination of ferromagnetic workpieces - Google Patents

Working method and apparatus for the examination of ferromagnetic workpieces

Info

Publication number
ZA782413B
ZA782413B ZA00782413A ZA782413A ZA782413B ZA 782413 B ZA782413 B ZA 782413B ZA 00782413 A ZA00782413 A ZA 00782413A ZA 782413 A ZA782413 A ZA 782413A ZA 782413 B ZA782413 B ZA 782413B
Authority
ZA
South Africa
Prior art keywords
examination
working method
ferromagnetic workpieces
workpieces
ferromagnetic
Prior art date
Application number
ZA00782413A
Other languages
English (en)
Inventor
E Larsson
Original Assignee
Skf Ind Trading & Dev
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 Skf Ind Trading & Dev filed Critical Skf Ind Trading & Dev
Publication of ZA782413B publication Critical patent/ZA782413B/xx

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
    • G01N27/9046—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
    • 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)
  • Measuring Magnetic Variables (AREA)
ZA00782413A 1977-05-13 1978-04-27 Working method and apparatus for the examination of ferromagnetic workpieces ZA782413B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7705299A NL7705299A (nl) 1977-05-13 1977-05-13 Werkwijze en inrichting voor het onderzoek van ferromagnetische werkstukken.

Publications (1)

Publication Number Publication Date
ZA782413B true ZA782413B (en) 1979-04-25

Family

ID=19828549

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00782413A ZA782413B (en) 1977-05-13 1978-04-27 Working method and apparatus for the examination of ferromagnetic workpieces

Country Status (12)

Country Link
JP (1) JPS53141686A (de)
BR (1) BR7802982A (de)
DD (1) DD135539A5 (de)
DE (1) DE2820559A1 (de)
ES (1) ES469764A1 (de)
FI (1) FI781482A (de)
FR (1) FR2390728A1 (de)
GB (1) GB1604188A (de)
IT (1) IT1112654B (de)
NL (1) NL7705299A (de)
SE (1) SE7805243L (de)
ZA (1) ZA782413B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
US4510447A (en) * 1981-10-26 1985-04-09 Exxon Production Research Co. Inspection apparatus for electromagnetically detecting flaws in the wall of a pipe

Also Published As

Publication number Publication date
FR2390728A1 (fr) 1978-12-08
DD135539A5 (de) 1979-05-09
ES469764A1 (es) 1979-10-01
SE7805243L (sv) 1978-11-14
BR7802982A (pt) 1979-01-02
IT1112654B (it) 1986-01-20
DE2820559A1 (de) 1978-11-23
IT7819761A0 (it) 1978-01-30
JPS53141686A (en) 1978-12-09
FI781482A (fi) 1978-11-14
NL7705299A (nl) 1978-11-15
GB1604188A (en) 1981-12-02

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