Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Process control for fast laser processing of CFRP

08.08.2014

No suitable process control method for laser processing of fiber-reinforced plastics is currently available.

Therefore scientists at the Laser Zentrum Hannover e.V. (LZH) are now working together with the Sensortherm GmbH and Newson nv on an innovative double scanner processing head: In this processing head, the beam path of the processing laser is decoupled from the detection beam path used for temperature measurement.


The new measurement method will soon be able to accurately monitor thermally critical areas of the processing geometry. Photo: LZH


With the combined scanning head, the CFRP processing and the measurement can be decoupled. Illustration: LZH

This makes it possible to have spatially flexible and temporally high-resolution measurements during the processing of fiber-reinforced plastic.

The combined scanning head should make it possible to measure any point within or without the laser interaction zone, during the running process. In order to achieve this, the project partners decouple the laser beam path from the path of the high speed pyrometer.

In this process, the measurement beam of the pyrometer will be guided by separate scanner mirrors. These are especially tuned to the detection wavelength of the pyrometer.

Process control for fiber-reinforced plastic materials

Highly accurate online temperature measurement is especially important for laser processing of fiber-reinforced plastic materials, such as carbon fiber reinforced plastics (CFRP). With the combined scanning head and the associated measurement method, thermally critical areas in the processing geometry can be accurately monitored. This principle builds the foundation for active intervention in the process and its optimization.

While the LZH is developing the affiliated laser processes and the process control for welding and cutting of fiber-reinforced plastic materials, Newson nv, Berlare-Overmere, Belgium, is developing the actual combined scanning head.

An innovative, high speed pyrometer for different wavelength ranges is being adapted to this processing head by Sensortherm GmbH, Sulzbach/Taunus. Furthermore, Sensortherm is optimizing this pyrometer for laser transmission welding, and for laser cutting and material removal.

The use of the combined scanning head is not limited to laser processing of fiber-reinforced plastic materials, meaning that metals or glass materials, for example, can also be processed.

The European EraSME project A'Quilaco (Advanced online quality and process control for high speed laser machining of composites) started on January 1st, 2014, and will run for two years. In Germany, A'Quilaco is financially supported by the Federal Ministry for Economic Affairs and Energy (BMWi), and in Belgium by the IWT "agentschap voor Innovatie door Wetenschap en Technologie".

Weitere Informationen:

http://www.lzh.de/en/projects/a-quilaco - project website

Lena Bennefeld | Laser Zentrum Hannover e.V.

Further reports about: CFRP Energy LZH Laser materials measurement method plastic processing temperature wavelength

More articles from Materials Sciences:

nachricht Serendipity uncovers borophene's potential
23.02.2017 | Northwestern University

nachricht Switched-on DNA
20.02.2017 | Arizona State University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>