[go: up one dir, main page]

SE8303776L - Eddy current MICROSCOPE - Google Patents

Eddy current MICROSCOPE

Info

Publication number
SE8303776L
SE8303776L SE8303776A SE8303776A SE8303776L SE 8303776 L SE8303776 L SE 8303776L SE 8303776 A SE8303776 A SE 8303776A SE 8303776 A SE8303776 A SE 8303776A SE 8303776 L SE8303776 L SE 8303776L
Authority
SE
Sweden
Prior art keywords
probe
pen
record
eddy current
lever arm
Prior art date
Application number
SE8303776A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8303776D0 (en
Inventor
D C Copley
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of SE8303776D0 publication Critical patent/SE8303776D0/en
Publication of SE8303776L publication Critical patent/SE8303776L/en

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Recording Measured Values (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

Eddy current probe 3 is caused to scan a region 4 of a turbine engine blade containing a crack 9 and the probe output data after processing (21) and amplification (26) is plotted on a record at positions corresponding to positions on the blade scanned. The record may be produced by energising electrode pen (30) which produces heat to cause a burn mark on paper record (35). Probe (3) is located on one end of lever arm 40 to the other end of which is fastened pen (30). Since lever arm portion (40A) is greater than portion (40B) movement of pen (30) is greater than probe (3) to form a magnified mapping of the inductance changes of the probe. <IMAGE>
SE8303776A 1982-08-03 1983-07-01 Eddy current MICROSCOPE SE8303776L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40468782A 1982-08-03 1982-08-03

Publications (2)

Publication Number Publication Date
SE8303776D0 SE8303776D0 (en) 1983-07-01
SE8303776L true SE8303776L (en) 1984-02-04

Family

ID=23600622

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8303776A SE8303776L (en) 1982-08-03 1983-07-01 Eddy current MICROSCOPE

Country Status (7)

Country Link
JP (1) JPS5952748A (en)
DE (1) DE3327571A1 (en)
FR (1) FR2531537A1 (en)
GB (1) GB2124772A (en)
IL (1) IL68155A0 (en)
IT (1) IT1170175B (en)
SE (1) SE8303776L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644274A (en) * 1983-04-01 1987-02-17 General Electric Company Apparatus for supporting an eddy current probe used to scan an irregular surface
EP1241473A1 (en) * 2001-03-16 2002-09-18 Siemens Aktiengesellschaft Method for the nondestructiv testing of carbide alloys and for production of a gas turbine blade
JP2004523767A (en) * 2001-03-16 2004-08-05 シーメンス　アクチエンゲゼルシヤフト Non-destructive inspection method for carbide-containing alloy or alloy whose surface vicinity is sulfided and method for manufacturing gas turbine blade
FR2926136B1 (en) * 2008-01-03 2010-04-02 Eads Europ Aeronautic Defence METHOD FOR SCANNING A PHYSICAL CHARACTERISTIC TO THE SURFACE OF AN OBJECT
GB201110678D0 (en) * 2011-06-23 2011-08-10 Sarclad Ltd A method of detecting defects in a metallic surface
CN104316596A (en) * 2014-11-07 2015-01-28 中航工业贵州航空动力有限公司 Crack detection method for second-level tray and third-level tray of aircraft engine compressor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587158A (en) * 1942-12-29 1947-04-16 George Keinath Improvements in three magnitude recorders
US3243697A (en) * 1961-07-03 1966-03-29 Shell Oil Co Self-contained pipeline inspecting system
GB1072436A (en) * 1963-09-04 1967-06-14 Atomic Energy Authority Uk Improvements in or relating to techniques for examining the internal structure of a specimen
US3351852A (en) * 1964-08-26 1967-11-07 Hugo L Libby Graphical nulling device for nondestructive eddy current testing equipment
US3302105A (en) * 1964-08-26 1967-01-31 Hugo L Libby Eddy current nondestructive testing device using an oscilloscope to identify and locate irregularities in a test piece
US3475681A (en) * 1965-08-02 1969-10-28 Magnaflux Corp Apparatus display system for providing plural indications and threshold indications
US3419797A (en) * 1966-01-21 1968-12-31 Atomic Energy Commission Usa Nondestructive eddy current testing device for testing metal tubing and instantaneously displaying the cross section of said tubing
US4439730A (en) * 1981-05-08 1984-03-27 Amf Inc. Nondestructive inspection apparatus and method utilizing combined inspection signals obtained from orthogonal magnetic fields
FR2512959A1 (en) * 1981-09-14 1983-03-18 Commissariat Energie Atomique METHOD AND DEVICES FOR MONITORING A SURFACE USING A CURRENT FUEL CURRENT

Also Published As

Publication number Publication date
GB8315680D0 (en) 1983-07-13
GB2124772A (en) 1984-02-22
FR2531537A1 (en) 1984-02-10
JPS5952748A (en) 1984-03-27
IL68155A0 (en) 1983-06-15
SE8303776D0 (en) 1983-07-01
DE3327571A1 (en) 1984-02-09
IT8322195A1 (en) 1985-01-22
IT1170175B (en) 1987-06-03
IT8322195A0 (en) 1983-07-22

Similar Documents

Publication Publication Date Title
DE3587169D1 (en) METHOD FOR CONTROLLING A MICROSCOPE SCANNER DEVICE.
DE3853494D1 (en) Arrangement for generating an optical scanning grid for laser scanners.
SE8303776D0 (en) Eddy current MICROSCOPE
SE8401819L (en) SPIRIT TROUBLE SUNDAY
DK0523494T3 (en) Electron device using an electron source with low or negative electron affinity
AT355373B (en) PLANT FOR RECYCLING HEAT IN DIESEL COMBUSTION ENGINES BY MEANS OF AT LEAST ONE STEAM CIRCUIT
DE69116270D1 (en) METHOD AND DEVICE FOR DETERMINING THE POSITION OF AT LEAST ONE CONNECTING FLAG OF AN ELECTRONIC COMPONENT
FR2637409B1 (en) MEMORY FOR COMPUTER
DE59102125D1 (en) Position measuring device.
DE59107727D1 (en) Arrangement for converting an optical wave of small spot size into a wave of larger spot size
JPS5521621A (en) Facsimile unit
IT1182565B (en) MANUFACTURING PROCEDURE FOR COMBUSTIBLE OBJECTS BY COMBUSTION OF FUEL PAPER AND COMBUSTIBLE OBJECTS SO OBTAINED
SE7903979L (en) APPARATUS FOR POINT SCANNING OF AN INFORMATION SURFACE
JPS56111140A (en) Scanning type magnetic recording reading head
JPS5525222A (en) Minor region pattern input system via facsimile
FI904371A0 (en) ANORDINATION FOR THE DEVELOPMENT OF DEFORMATION AND ENCLOSURE OF MACHINERY SPECIFICALLY AV SCRAPPING AND ENCLOSURE.
JPS5671174A (en) Optical reader
JPS5684503A (en) Measuring device for multiplication factor
SU1009609A1 (en) Method of determining cutting properties of hard alloy tools
JPS5662322A (en) Electronic beam exposure method
SU736955A1 (en) Pulse registering apparatus
JPS53148315A (en) Scanner plotter
SU855434A1 (en) Specimen for friction and wear testing
SU688864A1 (en) Tool wear-out determining method
JPS5489186A (en) Sodium seeing-through device

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8303776-2