하이브리드 철도차량 차체 적용 샌드위치 판넬의 충격특성에 관한 연구

초록

A tilting train is very economical because it can run at a high speed on the existing rail. The concept of light weight deign will be very helpful for the tilting train to travel around a curve at a faster speed because the light weight car body makes the center of gravity lower. Recently, the use of composite material to railway vehicles is gradually increasing due to its light weight characteristics. The impact characteristics of composite materials should be investigated because the impact property of composites is very important. This paper investigates the low-velocity impact and compression-after-impact (CAI) characteristics conducted on honeycomb sandwich panels. Experimental results show that the compressive residual strength is greatly reduced as the impact damage size increases.