Forum für Wissenschaft, Industrie und Wirtschaft

Hauptsponsoren:     3M 
Datenbankrecherche:

 

Hannover Messe 2014 – Making lightweight construction fit for everyday use

03.04.2014

CFRP is considered to be the material of the future in the automobile and aircraft industry. It is the perfect substitute material for steel because of its high strength and stiffness, thus ensuring the same safety level as steel. The characteristics of the lightweight material are due to the way is manufactured. Like textiles, carbon fibers are manufactured as crimp and non-crimp material and are finally coated with plastic.

Laser: No material-induced tool wear
The difference between CFRP and metal becomes noticeable during processing, too. Tools such as drills and saws wear down quickly on fiber reinforced plastic so that cuts and holes become less precise. Therefore, the processing and repair of these materials are rather expensive. Damaged parts are mostly replaced completely. The LZH scientists led by Dr.-Ing. Peter Jäschke are investigating new methods to qualify this lightweight material for use in large series production. “The distinctive quality of the laser is the contactless processing, avoiding material-induced tool wear which is typical for conventional tools. In this way, consistent processing results can be guaranteed. This is why laser-based processes are ideal for automation”, explains Jäschke.


Preparation of a CFRP slat for repair: A UV laser is used to remove the material layer by layer. (Photo: LZH)


Repair removal using laser radiation. (Photo: LZH)

Layer by layer
During the laser-based repair of CFRP parts, the laser removes the damaged area step by step and layer by layer. “Afterwards, the damaged area looks like an upside-down pyramid”, continues Jäschke. “Then, precisely matching fiber layers can be glued into the area removed. This way, the stiffness of the part is virtually the same as before.”

Most recently, the LZH scientists have been working on repairing a slat demonstrator. This part, which is mounted to the front edge of the wing, is important for the aerodynamics. Because of its position it is particularly susceptible to damage, for example by collisions with birds. A suitable repair process is thus an important prerequisite for making aviation more resource-efficient and sustainable.

Sustainability – even in the streets
Carbon fiber reinforced plastics are essential for sustainable road traffic, too – that is for the automotive industry of the future. In the current HolQuest 3D project, the processing of CFRP and process automation for parts for the automotive industry are being further explored.

On the example of a slat model, visitors of the Hannover Messe can see how the laser is used to prepare complex three-dimensional structures for repair. Various exhibits illustrate the advantages of laser CFRP processing. Besides the repairing these include cutting and welding in particular.

The LZH at the Hannover Messe: Lower Saxony Pavilion, hall 2, stand A08.

More information: http://www.lzh.de/de/hannovermesse2014

Contact: 
Marketing  & Communications
Dipl.-Biol. Lena Bennefeld
Phone: +49 511 2788-238
Fax: +49 511 2788-100
E-Mail: l.bennefeld@lzh.de

Laser Zentrum Hannover e.V. (LZH)

As an independent, non-profit research institute, the Laser Zentrum Hannover e.V. (LZH) stands for innovative research, development and consulting. The LZH is supported by the Lower Saxony Ministry for Economics, Labour and Transport and is dedicated to the selfless promotion of applied research in the field of photonics and laser technology. Founded in 1986, over 170 staff have achieved a turnover of 15.993 million euros (for 2013), among others, from income from federal, state, EU and industrial projects.

The focus of the LZH lies on the fields of optical components and systems, optical production technologies, and biomedical photonics. Interdisciplinary cooperation between natural scientists and mechanical engineers makes innovative approaches to challenges from the most different areas possible: from the development of components for specific laser systems to process developments for the most diverse laser applications, for example for medical technology or lightweight construction in the automotive sector. Seventeen spin off companies have emerged from the LZH up to now. Thus, the LZH has created a strong transfer between fundamental science, application oriented research, and industry. 

Dipl.-Biol. Lena Bennefeld | Laser Zentrum Hannover e.V.
Further information:
http://www.lzh.de/en/publications/pressreleases/2014/hmi-2014-making-lightweight-construction-fit-for-everyday-use

Further reports about: CFRP LZH Laser Saxony construction difference fiber mechanical processing repair technologies

More articles from HANNOVER MESSE:

nachricht Measurement of components in 3D under water
01.04.2015 | Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF

nachricht Artificial hand able to respond sensitively thanks to muscles made from smart metal wires
24.03.2015 | Universität des Saarlandes

All articles from HANNOVER MESSE >>>

The most recent press releases about innovation >>>

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

Im Focus: The pyrenoid is a carbon-fixing liquid droplet

Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.

A warming planet

Im Focus: Hochpräzise Verschaltung in der Hirnrinde

Es ist noch immer weitgehend unbekannt, wie die komplexen neuronalen Netzwerke im Gehirn aufgebaut sind. Insbesondere in der Hirnrinde der Säugetiere, wo Sehen, Denken und Orientierung berechnet werden, sind die Regeln, nach denen die Nervenzellen miteinander verschaltet sind, nur unzureichend erforscht. Wissenschaftler um Moritz Helmstaedter vom Max-Planck-Institut für Hirnforschung in Frankfurt am Main und Helene Schmidt vom Bernstein-Zentrum der Humboldt-Universität in Berlin haben nun in dem Teil der Großhirnrinde, der für die räumliche Orientierung zuständig ist, ein überraschend präzises Verschaltungsmuster der Nervenzellen entdeckt.

Wie die Forscher in Nature berichten (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005), haben die...

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Wundermaterial Graphen: Gewölbt wie das Polster eines Chesterfield-Sofas

Graphen besitzt extreme Eigenschaften und ist vielseitig verwendbar. Mit einem Trick lassen sich sogar die Spins im Graphen kontrollieren. Dies gelang einem HZB-Team schon vor einiger Zeit: Die Physiker haben dafür eine Lage Graphen auf einem Nickelsubstrat aufgebracht und Goldatome dazwischen eingeschleust. Im Fachblatt 2D Materials zeigen sie nun, warum dies sich derartig stark auf die Spins auswirkt. Graphen kommt so auch als Material für künftige Informationstechnologien infrage, die auf der Verarbeitung von Spins als Informationseinheiten basieren.

Graphen ist wohl die exotischste Form von Kohlenstoff: Alle Atome sind untereinander nur in der Ebene verbunden und bilden ein Netz mit sechseckigen Maschen,...

Alle Focus-News des Innovations-reports >>>

Anzeige

Anzeige

IHR
JOB & KARRIERE
SERVICE
im innovations-report
in Kooperation mit academics
Veranstaltungen

11. BusinessForum21-Kongress „Aktives Schadenmanagement"

22.09.2017 | Veranstaltungen

Internationale Konferenz zum Biomining ab Sonntag in Freiberg

22.09.2017 | Veranstaltungen

Die Erde und ihre Bestandteile im Fokus

21.09.2017 | Veranstaltungen

 
VideoLinks
B2B-VideoLinks
Weitere VideoLinks >>>
Aktuelle Beiträge

11. BusinessForum21-Kongress „Aktives Schadenmanagement"

22.09.2017 | Veranstaltungsnachrichten

DFG bewilligt drei neue Forschergruppen und eine neue Klinische Forschergruppe

22.09.2017 | Förderungen Preise

Lebendiges Gewebe aus dem Drucker

22.09.2017 | Biowissenschaften Chemie