The newly developed LIFTEC® joining process (patent pending) works by heating a component, or a part of it, by laser radiation which passes through the plastic joining partner. The component is pressed onto the plastic part under mechanical pressure, then heated, and finally pushed into the plastic by further mechanical pressure.
Provided that a suitable component geometry has been selected, a solid, positive bond is formed after cooling. It is essential to the process that the component should have a higher melting point than the plastic joining partner. Suitable materials include metals, ceramics and temperature-resistant plastics.
Another approach is being investigated in the context of the Cluster of Excellence "Integrative Production Technology for High-Wage Countries" at RWTH Aachen University. In this approach, researchers are examining several irradiation methods, materials, beam sources and pre-treatment methods. A first series of tests is being carried out to determine the influence of structural density on the joining process. This is being done by producing surface structures with dotted, lined and checkered patterns in stainless steel samples using Nd:YAG laser light.
Subsequently, the structured samples are bonded to the transparent plastic samples by diode laser light in a con-tour or quasi-simultaneous joining process. The resulting bonds are very strong and generally very promising.Contacts at the Fraunhofer ILT
Axel Bauer | Fraunhofer Gesellschaft
CeGlaFlex project: wafer-thin, unbreakable and flexible ceramic and glass
25.04.2017 | Fraunhofer-Institut für Lasertechnik ILT
Additive manufacturing, from macro to nano
11.04.2017 | Laser Zentrum Hannover e.V.
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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