Sensor-controlled laser processing of polymers and compound materials

Bernd Wilhelmi

doi:10.1117/12.821594

18 February 2009 Sensor-controlled laser processing of polymers and compound materials

Bernd Wilhelmi

Proceedings Volume 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications; 72761K (2009) https://doi.org/10.1117/12.821594
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

This report discusses the optimisation of laser materials processing of polymers and compound materials by employment of smart sensors which measure laser parameters as well as processing progress online and deliver signals which are used for instantaneous laser and motion control. The mutual interdependence between suitable laser parameters and given mechanical, thermal and optical material properties is considered. Some examples of laser cutting, laser milling of channels and holes with precisely defined depth as well as laser of welding are treated. Process simulation plays an important part in finding the right adjustment of laser parameters as function of sample properties and processing aim. Often laser parameters and sample changes have to be measured and controlled very fast between adjacent irradiations of the sample by pulse sequences (up to about 100 KHz) or between repetition cycles of scanned cw lasers. The same sensors measure and store the processing results and decide whether the sample finally fulfils all quality criteria. The value of such laser processing units strongly depends on the smartness of the applied sensors and their interplay with the laser as a tool.

Citation Download Citation

Bernd Wilhelmi "Sensor-controlled laser processing of polymers and compound materials", Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72761K (18 February 2009); https://doi.org/10.1117/12.821594

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