GB2062241B - Method and apparatus for measuring the depth of a surface layer of a metal workpiece - Google Patents

Method and apparatus for measuring the depth of a surface layer of a metal workpiece

Info

Publication number
GB2062241B
GB2062241B GB8030735A GB8030735A GB2062241B GB 2062241 B GB2062241 B GB 2062241B GB 8030735 A GB8030735 A GB 8030735A GB 8030735 A GB8030735 A GB 8030735A GB 2062241 B GB2062241 B GB 2062241B
Authority
GB
United Kingdom
Prior art keywords
depth
measuring
surface layer
metal workpiece
workpiece
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
GB8030735A
Other languages
English (en)
Other versions
GB2062241A (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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Publication of GB2062241A publication Critical patent/GB2062241A/en
Application granted granted Critical
Publication of GB2062241B publication Critical patent/GB2062241B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
GB8030735A 1979-10-31 1980-09-24 Method and apparatus for measuring the depth of a surface layer of a metal workpiece Expired GB2062241B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69132/79A IT1119559B (it) 1979-10-31 1979-10-31 Procedimento e dispositivo per la misura della profondita di uno strato superficiale di un pezzo metallico avente caratteristiche fisiche differenti da quelle della parte rimamente

Publications (2)

Publication Number Publication Date
GB2062241A GB2062241A (en) 1981-05-20
GB2062241B true GB2062241B (en) 1983-12-07

Family

ID=11311415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8030735A Expired GB2062241B (en) 1979-10-31 1980-09-24 Method and apparatus for measuring the depth of a surface layer of a metal workpiece

Country Status (5)

Country Link
JP (1) JPS5673305A (enExample)
DE (1) DE3040926A1 (enExample)
FR (1) FR2468876A1 (enExample)
GB (1) GB2062241B (enExample)
IT (1) IT1119559B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2556335B2 (ja) * 1987-09-08 1996-11-20 住友特殊金属 株式会社 電磁変換素子用複合基板のＩｎＳｂ単結晶ウエハ−厚み測定方法
GB2274712B (en) * 1993-01-22 1997-01-15 Brecknell Willis & Co Ltd Non-destructive testing of composite conductor rails
US7443177B1 (en) * 2005-05-31 2008-10-28 Iowa State University Research Foundation, Inc. Characterization of conductor by alternating current potential-drop method with a four-point probe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895643A (en) * 1929-03-05 1933-01-31 Standard Oil Co California Method of and apparatus for measuring the thickness of metal
US2854626A (en) * 1954-12-31 1958-09-30 Davidson Martin Plating thickness indicator
US3365663A (en) * 1962-06-29 1968-01-23 Shin Mitsubishi Jukogyo Kk Thickness measuring instrument for electro-conductive objects and associated methods
SE320676B (enExample) * 1968-03-14 1970-02-16 Aka Ab Apparatkemiska

Also Published As

Publication number Publication date
FR2468876B3 (enExample) 1983-04-08
FR2468876A1 (fr) 1981-05-08
IT1119559B (it) 1986-03-10
DE3040926A1 (de) 1981-09-03
GB2062241A (en) 1981-05-20
IT7969132A0 (it) 1979-10-31
JPS5673305A (en) 1981-06-18

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Legal Events

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