1. The characteristics of carbon fiber material
Because the carbon fiber has small density, high strength and stiffness, no creep, fatigue resistance and good corrosion resistance, and a series of advantages, not only carrying capacity is the strongest composite material, is currently the only can replace metal materials and non-metallic composite material used as structural materials.With the railway vehicle commonly used parts of metal materials mechanics performance comparison is shown in the table below.
Through the comparison of some indicators shows that carbon fiber has certain advantage in certain performance indicators;If after a comprehensive comparison also shows that carbon fiber and insufficient, especially the anisotropy, and impact resistance performance is poor.
2. The application of carbon fiber material of modern railway vehicle
(1) the domestic application situation
So far, only in the early development of domestic power concentration emu prototype application of carbon fiber materials, manufacturing products is the front-end of jianying coupler cranium;
Low has been discussed using carbon fiber materials under high load flow guide cover the roof of high speed emu, but to take action.
(2) the application of abroad
According to an informal, are studying abroad application of carbon fiber materials load-bearing components of car body structure, but haven't reached practical stage, so no published results of information.
3. The carbon fiber material in modern railway vehicle application prospect
Low carbon fiber as a structural material its application scope and main goal should be to replace some metal materials under certain load component;
Low because there is currently no batch of carbon fiber in the railway vehicle application experience and mature technology, its application to step-by-step manner;
Low carbon fiber in the near future the main application target should be used to make some important load carrying parts or components, such as high strength jianying front-end epicranium, roof fairing, rack frame, frame, etc;
Low carbon fiber forwards the main application target can be manufacturing railway vehicle car bearing components or parts of the bogie frame.
The application of low recent or long-term target will be used as lightweight material structure.
