There are two piezo-sensors integrated in one of the pedal cranks of this bicycle. One function of the sensors is to measure the forces that propel the rider forwards and show him how ‘evenly’ he is pedaling. In the exhibited prototype, the registered data are transmitted wirelessly in real time to a PC – in practical use this would be a device such as a PDA or a cell phone.
The integrated-function pedal crank is a result of the InGuss project, whose goal is to manufacture ‘intelligent’ cast parts, by directly integrating sensors, actuators and electronic components in the parts while they are being cast. In this project, researchers at the Fraunhofer Institutes for Manufacturing Technology and Applied Materials Research IFAM, for Structural Durability and System Reliability LBF and for Integrated Circuits IIS are developing the manufacturing technology and the components to be integrated. The special feature of the bicycle pedal crank is that the piezoceramic actuators, sensors and electronic components are integrated in the light metal components during casting.
This is no easy task, for the high temperatures of over 700°C that prevail during casting can destroy the sensitive electronic and electromechanical components. “We protect the components with special insulating materials, and adapt the process accordingly to prevent them from being damaged,” says Christoph Pille of the IFAM in Bremen. This would make it possible for the first time ever to integrate components such as RFID transponders during casting in such a way that they could not be lost, enabling components to be tracked, identified and protected against product piracy.
Heiko Atzrodt of the LBF is certain that this pedal crank demonstrator is just one example out of many potential applications for the technology: “Integrated sensor and adaptronic functions are likely to make their way into numerous products before long – for instance, sensors in aircraft parts could report material fatigue before it is too late. Integrated actuators make it possible to actively influence vibrations, too.”
Monika Weiner | alfa
AchemAsia 2019 will take place in Shanghai
15.06.2018 | DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V.
Insects supply chitin as a raw material for the textile industry
05.06.2018 | Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences