JPS55159102A - Thickness measuring method of nonmagnetic metal sheet - Google Patents

Thickness measuring method of nonmagnetic metal sheet

Info

Publication number
JPS55159102A
JPS55159102A JP6681779A JP6681779A JPS55159102A JP S55159102 A JPS55159102 A JP S55159102A JP 6681779 A JP6681779 A JP 6681779A JP 6681779 A JP6681779 A JP 6681779A JP S55159102 A JPS55159102 A JP S55159102A
Authority
JP
Japan
Prior art keywords
sheet
thicknesses
high frequency
beforehand
metal sheet
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.)
Pending
Application number
JP6681779A
Other languages
Japanese (ja)
Inventor
Hitoshi Tanaka
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.)
NIPPON DENSOKUKI KENKYUSHO KK
NIPPON DENSOKUKI KENKYUSHO YUU
Original Assignee
NIPPON DENSOKUKI KENKYUSHO KK
NIPPON DENSOKUKI KENKYUSHO YUU
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 NIPPON DENSOKUKI KENKYUSHO KK, NIPPON DENSOKUKI KENKYUSHO YUU filed Critical NIPPON DENSOKUKI KENKYUSHO KK
Priority to JP6681779A priority Critical patent/JPS55159102A/en
Publication of JPS55159102A publication Critical patent/JPS55159102A/en
Pending legal-status Critical Current

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Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE: To continuously obtain the value of temperature-compensated thicknesses by beforehand obtaining the characteristic curves of voltage and thicknesses and the characteristic curves of temperatures and thicknesses by experiments and beforehand programming sequence in a microcomputer.
CONSTITUTION: A high frequency energizing device 3 is provided to the surface of the sheet 1 of nonmagnetic to be measured at a spacing (d) and an electric field is generated in the sheet 1 by a high frequency electric power source 7 and a high frequency coil, whereby eddy current Ie is generated. In addition, the eddy current is detected by providing a detector 9 near the bottom surface of the sheet 1. A coil 11 and voltmeter 13 are provided to the detector 9. The induction voltage measured by the voltmeter 13 is corrected by the temperature of the sheet 1 obtainable by a thermometer 15, whereby the thickness of the sheet is obtained. At this time, the characteristic curve of the effect of temeratures upon the value of the thicknesses affecting the induction voltage is beforehand obtained and determined.
COPYRIGHT: (C)1980,JPO&Japio
JP6681779A 1979-05-31 1979-05-31 Thickness measuring method of nonmagnetic metal sheet Pending JPS55159102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6681779A JPS55159102A (en) 1979-05-31 1979-05-31 Thickness measuring method of nonmagnetic metal sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6681779A JPS55159102A (en) 1979-05-31 1979-05-31 Thickness measuring method of nonmagnetic metal sheet

Publications (1)

Publication Number Publication Date
JPS55159102A true JPS55159102A (en) 1980-12-11

Family

ID=13326780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6681779A Pending JPS55159102A (en) 1979-05-31 1979-05-31 Thickness measuring method of nonmagnetic metal sheet

Country Status (1)

Country Link
JP (1) JPS55159102A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120205A (en) * 1983-12-02 1985-06-27 Nissan Motor Co Ltd Method and apparatus for automatic compensation for temperature in comparison measurement
JPH08152302A (en) * 1994-11-29 1996-06-11 Ono Sokki Co Ltd Thickness discriminator
JP2006510024A (en) * 2002-12-13 2006-03-23 アプライド　マテリアルズ　インコーポレイテッド Method and apparatus for measuring the thickness of a test object between two eddy current sensor heads
JP2013113771A (en) * 2011-11-30 2013-06-10 Mitsubishi Heavy Ind Ltd Wall thickness inspection method, turbin blade, calibration tool and eddy current detection system
JP2020143958A (en) * 2019-03-05 2020-09-10 株式会社テイエルブイ Probe and thickness measurement device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120205A (en) * 1983-12-02 1985-06-27 Nissan Motor Co Ltd Method and apparatus for automatic compensation for temperature in comparison measurement
JPH08152302A (en) * 1994-11-29 1996-06-11 Ono Sokki Co Ltd Thickness discriminator
JP2006510024A (en) * 2002-12-13 2006-03-23 アプライド　マテリアルズ　インコーポレイテッド Method and apparatus for measuring the thickness of a test object between two eddy current sensor heads
JP2013113771A (en) * 2011-11-30 2013-06-10 Mitsubishi Heavy Ind Ltd Wall thickness inspection method, turbin blade, calibration tool and eddy current detection system
JP2020143958A (en) * 2019-03-05 2020-09-10 株式会社テイエルブイ Probe and thickness measurement device

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