In Process Optical Measurement Of Micro Profile On Cold Rolled Steel Plates

Klaus Weber

doi:10.1117/12.949345

10 March 1989 In Process Optical Measurement Of Micro Profile On Cold Rolled Steel Plates

Klaus Weber

Proceedings Volume 1012, In-Process Optical Measurements; (1989) https://doi.org/10.1117/12.949345
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

A new sensor for measurement of micro profiles of fast running surfaces was developed, in which a fine Laser spot is created at the surface and the reflected light is received by photodiodes, arranged along an arc of 140 degrees perpendicular to the surface. These photodiodes are connected with resistors in the known manner of PSD's to realise an angle sensitive array to win the averaged angle of reflection of the asked surface-elements point by point. By calculating the local inclinations of these surface-elements and by integrating these values the micro profile is created, and by known calculations roughness parameters like Ra are determined. The distance of measuring points is 10 µm at a speed of the metal sheet up to 20 m/sec., thus the frequency of single measurements is 2 MHz. Results are shown and limitations are discussed.

Citation Download Citation

Klaus Weber "In Process Optical Measurement Of Micro Profile On Cold Rolled Steel Plates", Proc. SPIE 1012, In-Process Optical Measurements, (10 March 1989); https://doi.org/10.1117/12.949345

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available