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 Glass's off-kilter harmonies
18.01.2017 | University of Texas at Austin, Texas Advanced Computing Center

nachricht Explaining how 2-D materials break at the atomic level
18.01.2017 | Institute for Basic Science

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>