Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Short Laser Pulses for Material Deposition with Cold Spray Technology

13.04.2015

In a new EU-funded project, ultra-short laser pulses modify material surfaces so that metal powder from a cold gas jet can adhere more easily. With Cold Spray Technology, coating lightweight materials such as plastics or carbon fiber reinforced plastic (CFRP) becomes significantly simpler. The EU research project “Efficient Manufacturing of Laser-Assisted Cold-Sprayed Components” (EMLACS) unites five partners from industry and research who want to extend low-pressure cold gas spraying to new applications.

Cold Gas Spraying is an additive manufacturing process in which metal powders are accelerated to supersonic speeds to adhere to material surfaces. The material deposition process is based on the kinetic energy of the particles.


High-speed deposition of copper on aluminum segments.

Picture source: Dycomet

A thick layer (>0.5 mm) is deposited with no thermal defect in the substrate. The deposited layer can be directly machined or reworked. The main advantages of low-pressure cold gas spraying are the lack of heat input, high processing speed, and low investment cost. New material combinations are especially promising in automotive and aeronautics.

The main challenge in this technology is the adherence of the first layer on the workpiece. The aim of the EU research project “Efficient Manufacturing of Laser-Assisted Cold-Sprayed Components” (EMLACS) will improve adhesion on different substrates by using high-speed laser surface structuring with integrated ns and ps lasers with low-pressure cold gas spraying. New material combinations can then be developed for industrial use.

The deposition of metallic materials (Cu or Al) on carbon fiber and glass fiber reinforced plastic (CFRP and GFRP) substrates is being investigated, which has already created significant interest in the aeronautic and automotive industries. In addition, the new technology can be applied in novel ways in electronics manufacturing. As an example, Cold Gas Spraying may deposit a copper layer on a non-conducting housing for fanless heat removal from electronic components.

The project team is composed of French, Dutch, and German partners. Dycomet Europe (NL) brings cold gas spraying expertise, Edgewave (GER) delivers high-power short-pulsed laser technology, and Industrial Laser Systems (FR) is acting as the system integrator and coordinator of the project. Research teams from Université de Technologie de Belfort-Montbéliard (UTBM, FR) Fraunhofer-Institute for Laser Technology ILT (GER) are developing the process.
The EMLACS project (reference number 606567) has been running since June 2014 under Research for SMEs - FP7-SME-2013 and has been funded by the Research Executive Agency (REA) for 24 months.

Contact

Manuel Mendes
Industrial Laser Systems
Telephone +33 1 55950950
mmendes@industrial-laser-systems.com
21-23 rue Aristide Briand, 92170 Vanves, France
www.industrial-laser-systems.com

Dr.-Ing. Wolfgang Knapp
Head of the Coopération Laser Franco-Allemande CLFA
Telephone +33 2 2844 3711
wolfgang.knapp@ilt.fraunhofer.de
Fraunhofer-Institute for Laser Technology ILT
Steinbachstraße 15
52074 Aachen, Germany

Weitere Informationen:

http://www.emlacs.eu
http://www.ilt.fraunhofer.de

Petra Nolis | Fraunhofer-Institut für Lasertechnik ILT

Further reports about: Fraunhofer-Institut ILT Industrial Laser Lasertechnik Pulses Spray Technology cold gas fiber spraying substrates

More articles from Machine Engineering:

nachricht Scientists from Hannover develop a novel lightweight production process
27.09.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH

nachricht PRESTO – Highly Dynamic Powerhouses
15.05.2017 | JULABO GmbH

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>