Divinycell-cored train components are
easier to machine and finish than equivalent
honeycomb panels. Unlike honeycomb,
Divinycell presents a smooth
surface finish that usually does not require
filling or sanding, and which provides
a larger bonding area. Nor is there
any need for ‘edge close-out’ operations.
A versatile alternative
Divinycell cores can be used both in
conjunction with GRP skins to produce
train components, as well as with wood or aluminium skins.
In addition to being lighter than previous honeycomb panels, the Divinycell components offer higher peel strength, increased stiffness and better impact properties.
Other benefits of Divinycell sandwich composites for train interiors include low water absorption, excellent thermal and acoustic insulation and a fatigue life that more than meets the train’s 30-year service life.
In this application, Divinycell-based sandwich components are being used for interior components, but they can also be used for exterior components such as train fronts and roofs.
Diab is working closely with the train
builder, supplying not only core materials
but also a range of technical services
including finite element modelling,
material testing and process support.
The first trains will enter service
in 2012 on the 1,318-kilometer (819 mile)
high-speed link between Beijing and
Shanghai. This RMB160 billion
(USD23.4 billion) project will see trains
reach speeds of up to 380 kph (236 mph),
effectively cutting the journey time
between China’s two largest cities to just
five hours. With the new line China
expects to double the current annual
train capacity of 160 million passengers
between Beijing and Shanghai.
China’s rollout of its high-speed rail
started in 2007. By 2012, it is
expected that a
total of 42 high-speed
rail lines will have been built, with a
total track length of 13,000 kilometers (8,077 miles).