Non-Contact Surface Flaw Detection By Fiber Optic Reflection Sensors

P Wagli; R Huber; E Morger

doi:10.1117/12.938774

23 October 1986 Non-Contact Surface Flaw Detection By Fiber Optic Reflection Sensors

P Wagli, R Huber, E Morger

Proceedings Volume 0665, Optical Techniques for Industrial Inspection; (1986) https://doi.org/10.1117/12.938774
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

Optical sensors can be used for the non-contact control of mechanical parameters (e.g. surface quality) in fully automated production and assembly systems. The applicability of such optical sensor systems to a particular production line mainly depends on the detection limits (i.e. which size of scratches can be detected on a particular surface). A simple dimensionless number, D, was found describing the detection limit (D>1). The important parameters within D are: the reflectivity of both, the unperturbed surface and the defect, the area of the surface flaw and the noise generated by the statistical surface structure. The detection limits for different common flaws on various characteristic surfaces often present in the metal processing industry will be discussed together with examples of fiber optic sensor designs.

Citation Download Citation

P Wagli, R Huber, and E Morger "Non-Contact Surface Flaw Detection By Fiber Optic Reflection Sensors", Proc. SPIE 0665, Optical Techniques for Industrial Inspection, (23 October 1986); https://doi.org/10.1117/12.938774

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