Sponsored By

The load-bearing capabilities of carbon fiber reinforced plastics (CFRP) are being put to the ultimate test in a train bogie developed by Kawasaki Heavy Industries (KHI). The component was jointly developed with Teijin group company Toho Tenac in 2013 and is already used in Kawasaki's new-generation railcar bogie, the efWING.

December 28, 2015

1 Min Read
Train bogie employs CFRP in frame, springs

The load-bearing capabilities of carbon fiber reinforced plastics (CFRP) are being put to the ultimate test in a train bogie developed by Kawasaki Heavy Industries (KHI). The component was jointly developed with Teijin group company Toho Tenac in 2013 and is already used in Kawasaki's new-generation railcar bogie, the efWING.

 leafspringlores.png

CFRP springs (above) are used in the new Kawasaki Heavy Industries efWING train bogie (below).

 efWinglores.jpg

KHI's efWING bogie employs CFRP in place of steel in its side frames, while CFRP coil leaf springs also replace conventional steel independent coil springs. This is reportedly the first instance in the world where an all-CFRP bogie frame/spring assembly has been developed. The end result is a bogie that is an incredible 900-kg lighter. Benefits include more efficient running costs and lower CO2 emissions, as well as the reduction in the risk of wheel derailment.

"Teijin Group is accelerating its downstream strategy by leveraging its high-performance carbon fiber, with one such result being this joint development with Kawasaki Heavy Industries," says Teijin Group Executive Officer Takashi Yoshino, who is also general manager of the group's Carbon Fibers & Composites Business Unit and president of Toho Tenax. "Teijin Group aims to expand its carbon fiber and composite businesses by increasingly focusing on innovative transportation solutions, a key element focus of our downstream strategy."

Toho Tenax will help establish an integrated system encompassing everything from the carbon fiber's original yarn to the actual CFRP leaf springs. The new mass-production system will enable the efWING to be marketed on a global scale.

Sign up for the PlasticsToday NewsFeed newsletter.

You May Also Like