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.
When your car knows how you feel
20.12.2017 | FZI Forschungszentrum Informatik am Karlsruher Institut für Technologie
Did you know how many parts of your car require infrared heat?
23.10.2017 | Heraeus Noblelight GmbH
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences