Process Control During Laser Machining

A. Drenker; W. Gatzweiler; K. Wissenbach; E. Beyer

doi:10.1117/12.950059

24 March 1989 Process Control During Laser Machining

A. Drenker, W. Gatzweiler, K. Wissenbach, E. Beyer

Author Affiliations +

Proceedings Volume 1020, High Power CO2 Laser Systems and Applications; (1989) https://doi.org/10.1117/12.950059
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Controlled laser processing is required to improve and ensure the quality of welding and heat treatment. A sensor collects informations from the processing zone and passes them to a controller. The controller generates a signal adjusting the beam power according to the present situation. This feed-back structure using a pyrometer as sensor for the surface temperature was successfully employed for transformation hardening of workpieces with complex geometries. The complex phenomena in laser induced plasma require a modified sensor. The plasma signal detected by a photodiode contains implicit informations about the quality of the welding process. These informations have to be worked up before they can be passed to a controller. An experimental approach of process modelling, which requires a wide banded (0..300kHz) on-line mesurement of beam power for a recursive system identification algorithm, will be described.

Citation Download Citation

A. Drenker, A. Drenker, W. Gatzweiler, W. Gatzweiler, K. Wissenbach, K. Wissenbach, E. Beyer, E. Beyer, } "Process Control During Laser Machining", Proc. SPIE 1020, High Power CO2 Laser Systems and Applications, (24 March 1989); doi: 10.1117/12.950059; https://doi.org/10.1117/12.950059

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years