NetComposites
Airtech

Toho Tenax and Kawasaki Heavy Industries to Develop Mass-production CFRP Springs for Railcar Trucks

22 December 2015

Toho Tenax and Kawasaki Heavy Industries to Develop Mass-production CFRP Springs for Railcar Trucks

Toho Tenax has agreed with Kawasaki Heavy Industries to jointly develop a carbon fibre reinforced plastic (CFRP) leaf spring that can be mass-produced for railcar trucks.

According to Toho Tenax, the leaf spring was initially developed in 2013 and is already used in Kawasaki’s new-generation railcar truck, the efWING. It says it will help establish an integrated system encompassing everything from the carbon fibre’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.

“Teijin Group is accelerating its downstream strategy by leveraging its high-performance carbon fibre, 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 Fibres & Composites Business Unit and President of Toho Tenax. “Teijin Group aims to expand its carbon fibre and composite businesses by increasingly focusing on innovative transportation solutions, a key element focus of our downstream strategy.”

It explains that conventional railcar trucks use side frames and independent coil springs made of steel, but the efWING is the world’s first to combine these components in a simplified solution made of CFRP. The lighter materials and simplified design help to reduce the truck frame’s weight by some 900kg per railcar. Benefits include more efficient running costs and lower CO2 emissions, as well as the reduction in the risk of wheel derailment.

 


Photo provided by Teijin




Share this story


Related / You might like...

Austrak, Laing O’Rourke and USQ Partner on Composite Rail Technology

Australian organisations Austrak, Laing O’Rourke and the University of Southern Queensland (USQ) have joined forces to develop polymer composite solutions for bridge transoms in a $10 million project titled Polymer Composite Transoms for Rail Bridge Deck Replacement (CompTrans).

ACMA Presses Congress to Advance Defence and Transportation Issues

The American Composites Manufacturers Association (ACMA) led a Transportation and Defence Fly-In, 25-26 September 2018, during which ACMA members and staff met with more than 75 congressional offices and several key decision makers from federal agencies.

EPTA Highlights Opportunities for Composites in Rail

As the rail sector looks to new technologies to enable it to answer sustainability, performance and cost challenges, applications for pultruded composites are set to grow, according to a new report from the European Pultrusion Technology Association (EPTA). Lightweight, high performance, durable composites offer energy efficient solutions with lower environmental impact and reduced through-life costs in rolling stock and rail infrastructure.