The weight of the wheel frame made of carbon fiber composite material is cut in half
2022/07/28
Spanish rolling stock manufacturer Talgo will use carbon fiber reinforced plastic (CFRP) for the wheel frames of the Avril high-speed train in the future. Compared to components of previous steel designs, the weight can be halved while maintaining the same mechanical load capacity and safety. Lightweight reduces the overall weight of empty trains, which reduces energy consumption and increases the number of passengers carried per train. The European Union has supported the development as part of the Shift2Rail initiative.
It is reported that the Spanish company will strengthen the fleet of Deutsche Bahn with the new ICE L in the second half of 2024, which can be used as a reference indicator for future trains in Europe. This will enable Deutsche Bahn to drive the decarbonization of China-Europe traffic on its long-distance routes. The decarbonization is achieved thanks to the low weight of the Talgo trains, which have independent wheels and guide axles and are much lighter than conventional axles. Overall, the average weight per passenger onboard ICE L trains will be 20% lower than comparable trains from competitors. This, combined with an aerodynamically optimized vehicle exterior design, results in very good energy efficiency, which will allow German operators to reduce energy consumption and save costs. The low weight also helps reduce aggressive driving on infrastructure, which in turn reduces track and train maintenance costs. ICE L trains combine these weight advantages with improved accessibility, adaptability to needs, more passenger space and greater comfort.
The frame supporting the Avril's independently rotating wheelset is currently made of welded steel sheets, with no potential for further optimization in terms of component weight due to structural requirements. According to the company, the new composite also meets the railroad's most stringent standards for fire and smoke toxicity. Fully tested in accordance with the European standard CSN EN 13749, the wheel frame has withstood more than 10 million static and fatigue tests and no visible damage was found after inspection. In the next steps, the composite wheel carrier will be tested on the track under real conditions for final acceptance. Manufacturers believe composites can also be used in other structural components to reduce the weight of rail vehicles for local and long-distance hauling, thereby increasing passenger capacity, simplifying assembly processes, and reducing energy consumption and track wear.
Nanjing Jufa New Material Co., Ltd.
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