From 23 to 26 September 2014, Fraunhofer IZFP engineers present a new and enhanced generation of test equipment for rapid and reliable determination of residual stresses in rims at InnoTrans in Berlin, (hall 23B, booth 206).
In the case of a car, the braking operation is carried out in seconds – jamming on the brakes and shortly afterwards the vehicle has stopped. But with a fully loaded freight train weighing lots of tons braking takes much longer – on long descents braking, which is required to prevent the train’s unwanted acceleration, can even take more than 30 minutes.
For the wheels and brakes this long braking time means hard work – such a strong mechanical loading and heating of the wheels may cause so-called tensile residual stresses, which can lead to cracks in the wheel tread and – worst case – to wheel breakage.
Geislinger Steige and Tauernbahn are best examples for routes that cause heavy endurance stress in wheels. Their strong inclinations and partly narrow radii require the permanent use of the wagons´ block brakes which generate the braking force by pressing the brake shoes against the tread of the wheels.
The scientists and engineers of the Fraunhofer Institute for Nondestructive Testing IZFP performed an elaborate redesign of the hard- and software of the so-called UER systems* by evaluating the experience gained with previous versions of the systems. Thus, they succeeded in adapting the new versions even better to the specific needs of the maintenance and wheel manufacturers plants.
While maintaining ease of use a variety of options for customer-specific documentation and report generation have been added. In particular, for the testing of newly manufactured wheels an optional software evaluation module is now available.
All UER systems, the new ones as well as all previously delivered systems, are integrated into the remote maintenance network of Fraunhofer IZFP, i.e. in case of a failure the service team is able to perform an extensive error analysis by remote access via Internet.
The inspection instruments are applied in the manufacturing process of new wheels, but especially in the maintenance of the freight train wheels.
Sabine Poitevin-Burbes | idw - Informationsdienst Wissenschaft
Photovoltaics: easy implementation thanks to modern printing techniques
14.03.2018 | Fraunhofer-Institut für Angewandte Polymerforschung IAP
ILA 2018: Laser alternative to hexavalent chromium coating
13.03.2018 | Fraunhofer-Institut für Lasertechnik ILT
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
16.03.2018 | Event News
13.03.2018 | Event News
08.03.2018 | Event News
16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences