And the decisive factor for automobile construction of the future is to reduce the weight of the car. The Volkswagen AG is working together with the Laser Zentrum Hannover e.V. (LZH) and other partners on developing an innovative laser process for automated cutting of CFRP components, to make it possible to use this lightweight material for mass production.
CFRP laminate being cut using remote laser Technology
Lightweight materials, which have both high strength and stiffness, are the materials for automobile construction of the future. This is due to safety reasons, which cannot be sacrificed in order to reduce weight.
Carbon fiber reinforced plastics (CFRP) have the characteristics that are needed. However, CFRP is a challenge in production technology, and currently, CFRP components are mainly used in the sports car sector and in small batch automotive production.
If cars based on CFRP are to be mass produced, then automated production technologies for cutting this lightweight material must be developed. Conventional technologies such as milling or waterjet cutting have process-based disadvantages, such as high tool wear or handling of water and abrasives, which cannot be solved technologically.
In the current joint project HolQueSt 3D, seven partners from industry and science, under the leadership of Volkswagen AG, are working together on developing a process for 3-D high-performance laser processing of CFRP lightweight structures. In comparison to conventional technologies, lasers can be used for non-contact, high-precision processing without tool wear, and simultaneously the process has high reproducibility and flexibility. Up to now, due to high temperatures, laser processing of CFRP causes damage in the processing zone. The main hurdles for using laser processing for CFRP are at present an incomplete understanding of the process, and the lack of sufficiently developed processes.
Based on a new, fiber-guided, high performance laser with pulse lengths in the nanosecond range (Trumpf Laser GmbH + Co. KG), the LZH is developing both a process especially geared towards CFRP applications and an optimized process monitoring system. A further obstacle to the use of lasers in lightweight construction is the process-based generation of particles and gasses, which are partially hazardous to health. Together with Jenoptik Katasorb GmbH, the LZH is working on a remedy, by finding a suitable method for treatment and filtering, based on previous characterisation of the process emissions.
These concepts should be used to provide large-scale CFRP processing adapted to the demands of the automobile industry. Thus, resource efficient, lightweight construction concepts could soon find their way into today’s automotive generation.
HolQueSt 3D is financially supported by the German Ministry of Education and Research (BMBF), within the framework of the funding initiative “Photonic Processes and Tools for Resource-Efficient Lightweight Construction”, with funding of approximately 4 Million Euros from a total amount of 7 Million Euros for the whole project. Project partners are Volkswagen AG, Jenoptik Katasorb GmbH, Trumpf Laser GmbH+Co. KG, Invent GmbH, KMS Automation GmbH, TU Clausthal and the Laser Zentrum Hannover e.V.Contact:
Michael Botts | Laser Zentrum Hannover e.V.
Did you know how many parts of your car require infrared heat?
23.10.2017 | Heraeus Noblelight GmbH
Two intelligent vehicles are better than one
04.10.2017 | Ecole Polytechnique Fédérale de Lausanne
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...
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...
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....
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,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses