Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Stuttgart laser researchers create worldwide unique combination

17.03.2014

Ultra-short pulses, extremely high performance and energies

In 2013 the Federal President for Technology and Innovation honoured the further development of ultra-short laser pulses (UKP lasers) from a research tool into a successful tool in series production with the German Future Prize.


The IFSW team from laser and process development: (from left to right) Christian Freitag, Jan-Philipp Negel, André Loescher, Margit Wiedenmann.

A team of researchers at the Institute for Beam Tools (IFSW) at the University of Stuttgart has now succeeded in taking a further quantum leap in this field of technology that has become so important for highly precise material processing: for the first time the scientists processed carbon fibre-reinforced plastics (CFRP) with a laser of pulse length eight picoseconds with a mean power of up to 1.4 kilowatt and pulse energies of up to 4.5 millijoules (mJ).

This combination was able to be achieved for the first time worldwide. The high pulse energies are more favourable than a high pulse frequency for many applications and especially for processing CFRP.

... more about:
»BMBF »Beam »CFRP »IFSW »Innovation »Laser »automobiles »processing

The innovative laser source was developed at the IFSW in the framework of a cooperation project with Trumpf Laser GmbH funded by the Federal Ministry for Education and Research (BMBF). This source enables increasing the mean power through strengthening the pulse energy by means of an IFSW disk laser module and an ingenious arrangement of mirrors in a so-called multipass amplifier.

“Even the beam source itself set a new world record. Due to the unique combination of ultra-short pulses of high energy and a mean power in the kilowatt range, it enables highly precise processing with productivity never seen before“, according to the head of the IFSW and vice rector for knowledge and technology transfer at the University of Stuttgart, Prof. Thomas Graf.

In initial experiments this laser source was now used to process various materials. Separating and drilling carbon-reinforced plastics, where an increase in performance is particularly important for industrial applications in the construction of aircraft and automobiles was thereby the main issue.

Research has long been performed at the IFSW with the support of the Baden-Württemberg Foundation on the underlying influencing variables with the laser processing of CFRP as well as with BMBF support in the implementation in industrial applications. That is why very good results could be achieved even in the initial experiments.

Therefore this success is also of great importance for the IFSW since it shows how productive a close cooperation between laser and process development is. Details on the laser source and the results described here as well as the latest experiments will also be presented at the Stuttgart Laser Days SLT’14 on 24th and 25th June 2014 at the Stuttgart Trade Fair, www.slt.uni-stuttgart.de .

Further information:
Dr. Rudolf Weber, Dr. Marwan Abdou Ahmed, University of Stuttgart, Institute for Beam Tools,
Tel. 0711/685-66844, -69755, Email: weber (at) ifsw.uni-stuttgart.de, abdou-ahmed (at) ifsw.uni-stuttgart.de
Andrea Mayer-Grenu, University of Stuttgart, Department of University Communication, Tel. 0711/685-82176,
Email: andrea.mayer-grenu (at) hkom.uni-stuttgart.de

Andrea Mayer-Grenu | idw - Informationsdienst Wissenschaft

Further reports about: BMBF Beam CFRP IFSW Innovation Laser automobiles processing

More articles from Materials Sciences:

nachricht Controlling phase changes in solids
29.07.2015 | ICFO-The Institute of Photonic Sciences

nachricht Smart Hydrogel Coating Creates “Stick-slip” Control of Capillary Action
28.07.2015 | Georgia Institute of Technology

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Quantum Matter Stuck in Unrest

Using ultracold atoms trapped in light crystals, scientists from the MPQ, LMU, and the Weizmann Institute observe a novel state of matter that never thermalizes.

What happens if one mixes cold and hot water? After some initial dynamics, one is left with lukewarm water—the system has thermalized to a new thermal...

Im Focus: On the crest of the wave: Electronics on a time scale shorter than a cycle of light

Physicists from Regensburg and Marburg, Germany have succeeded in taking a slow-motion movie of speeding electrons in a solid driven by a strong light wave. In the process, they have unraveled a novel quantum phenomenon, which will be reported in the forthcoming edition of Nature.

The advent of ever faster electronics featuring clock rates up to the multiple-gigahertz range has revolutionized our day-to-day life. Researchers and...

Im Focus: Superfast fluorescence sets new speed record

Plasmonic device has speed and efficiency to serve optical computers

Researchers have developed an ultrafast light-emitting device that can flip on and off 90 billion times a second and could form the basis of optical computing.

Im Focus: Unlocking the rice immune system

Joint BioEnergy Institute study identifies bacterial protein that is key to protecting rice against bacterial blight

A bacterial signal that when recognized by rice plants enables the plants to resist a devastating blight disease has been identified by a multi-national team...

Im Focus: Smarter window materials can control light and energy

Researchers in the Cockrell School of Engineering at The University of Texas at Austin are one step closer to delivering smart windows with a new level of energy efficiency, engineering materials that allow windows to reveal light without transferring heat and, conversely, to block light while allowing heat transmission, as described in two new research papers.

By allowing indoor occupants to more precisely control the energy and sunlight passing through a window, the new materials could significantly reduce costs for...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

3rd Euro Bio-inspired - International Conference and Exhibition on Bio-inspired Materials

23.07.2015 | Event News

Clash of Realities – International Conference on the Art, Technology and Theory of Digital Games

10.07.2015 | Event News

World Conference on Regenerative Medicine in Leipzig: Last chance to submit abstracts until 2 July

25.06.2015 | Event News

 
Latest News

Tool making and additive technology exhibition: Fraunhofer IPT at Formnext

31.07.2015 | Trade Fair News

First Siemens-built Thameslink train arrives in London

31.07.2015 | Transportation and Logistics

California 'rain debt' equal to average full year of precipitation

31.07.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>