JPS57108704A - Measuring method of thickness of film coated on metallic plate - Google Patents
Measuring method of thickness of film coated on metallic plateInfo
- Publication number
- JPS57108704A JPS57108704A JP18609180A JP18609180A JPS57108704A JP S57108704 A JPS57108704 A JP S57108704A JP 18609180 A JP18609180 A JP 18609180A JP 18609180 A JP18609180 A JP 18609180A JP S57108704 A JPS57108704 A JP S57108704A
- Authority
- JP
- Japan
- Prior art keywords
- film
- thickness
- infrared beam
- coated
- condenser
- 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
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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE:To measure the thickness of a coated film in a simple and accurate way, by irradiating the laser to the film coated on a metallic plate and measuring the absorbed amount of the laser. CONSTITUTION:An infrared beam 1a of a 3.39mu wavelength given from an Ne- He gas laser source 1 that radiates the infrared beam of a certain level of intensity is irradiated to a coated film 4a on a metallic plate 4 through an upper edge hole of a condenser 3 via a half mirror 2. Thus the beam 1a is reflected on the plate 4 and then reflected again on the plate 4 via a condenser 3a. This action is repeated, and meanwhile the beam 1a is absorbed into the film 4a. Finally an infrared beam 1b is absorbed through the upper edge hole of the condenser 3 and then the mirror 2, and the amount of this absorption is detected by an infrared beam detector 5. The result of measurement is calculated 6 and displayed at a meter 7. A linear relation is substantially obtained between the thickness of a coated film and the absorption factor of the infrared beam. A calibration table is previously produced for the relation between the thickness of film and the amount of absorption by means of two coating standard metallic plates having different thicknesses of the coated films. As a result, the measurement is possible with high accuracy of about + or -3%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18609180A JPS57108704A (en) | 1980-12-26 | 1980-12-26 | Measuring method of thickness of film coated on metallic plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18609180A JPS57108704A (en) | 1980-12-26 | 1980-12-26 | Measuring method of thickness of film coated on metallic plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57108704A true JPS57108704A (en) | 1982-07-06 |
Family
ID=16182204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18609180A Pending JPS57108704A (en) | 1980-12-26 | 1980-12-26 | Measuring method of thickness of film coated on metallic plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57108704A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6057203A (en) * | 1983-09-09 | 1985-04-03 | Onoda Cement Co Ltd | Method and device for measuring thickness of plate-like material |
EP0536080A2 (en) * | 1991-10-04 | 1993-04-07 | S.C.R. Engineers Ltd. | Method for measuring liquid flow |
US5281819A (en) * | 1991-06-06 | 1994-01-25 | Aluminum Company Of America | Apparatus for nondestructively determining coating thickness on a metal object and associated method |
CN103869743A (en) * | 2013-05-21 | 2014-06-18 | 北京朗新明环保科技有限公司 | Film paving monitoring device for powder resin covering filter |
-
1980
- 1980-12-26 JP JP18609180A patent/JPS57108704A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6057203A (en) * | 1983-09-09 | 1985-04-03 | Onoda Cement Co Ltd | Method and device for measuring thickness of plate-like material |
US5281819A (en) * | 1991-06-06 | 1994-01-25 | Aluminum Company Of America | Apparatus for nondestructively determining coating thickness on a metal object and associated method |
EP0536080A2 (en) * | 1991-10-04 | 1993-04-07 | S.C.R. Engineers Ltd. | Method for measuring liquid flow |
EP0536080A3 (en) * | 1991-10-04 | 1994-10-12 | Scr Eng Ltd | Method for measuring liquid flow. |
CN103869743A (en) * | 2013-05-21 | 2014-06-18 | 北京朗新明环保科技有限公司 | Film paving monitoring device for powder resin covering filter |
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