محافظ الکترومغناطیسی بدنه فیبر کربن
Abstract
1-Overview
2-Properties of CFRP
3-Current Status of CFRP Application in Rail Transit Equipment
4-Principle of electromagnetic shielding
5-Simulation Research
6-Conclusion
7-References
Abstract
The carbon fiber composite materials have been widely used in the field of rail transit.Carbon fiber body is more advantageous than traditional material especially in weight.This paper introduces main characteristics of carbon fiber composites and outlines the principles of electromagnetic shielding effectiveness.Electromagnetic shielding characteristics of carbon fiber reinforced polymer (CFRP) was studied through electromagnetic shielding simulation technology and test compared with aluminum, aluminum alloy and carbon steel. Some suggestions are provided in terms of the CFRP electromagnetic characteristics. This research sets a foundation for the EMC design for railway vehicles.
Overview
Modern railway vehicles have undertaken improvement and optimization in the aspects of rail transit, intelligence, safety and comfort, especially the high-speed EMU trains. However, speed increase will not only rely on the design of powerful traction system but also on the lightweight design which plays a vital role in this aspect.For the weight, stainless steel is better than weatherproof steel. Aluminum alloy is better than stainless steel. However, carbon fiber reinforced composite has better advantages over aluminum alloy. The application of composites in the high-speed railway vehicles has been gradually enlarged from carbody interior, components and materials of equipment inside vehicles to the carbody structure. Carbon fiber composite will bring rail transit industry into a new stage[1]-[2]. Although CFRP presents excellent properties in various aspects, there are still more aspects of carbody materials to be satisfied for high-speed trains, such as fire performance, thermal insulation properties, corrosion resistance characteristic and electromagnetic properties. Upon comparison with previous car bodies made from steel and aluminum alloy, however less attention is paid to electromagnetic shielding properties of CFRP vehicles.