The source of wayside noise for the train are the aerodynamic noise, wheel/rail noise, and power unit noise. The major source of railway noise is the wheel/rail noise caused by the interaction between the wheels and rails. The Structure borne noise is mainly a low frequency problem. The train noise and vibration nearby the elevated railway make one specific issue. The microphone array method is used to search sound radiation characteristics of elevated structure to predict the noise propagation from an elevated railway. In this paper, the train noise and structure borne noise by train are measured. From the results, we investigated the effect on the sound absorption tunnel for elevated railway.

ABSTRACT
1. 서 론
2. 고가선로 인근 소음
    2.1 철도소음의 특성
    2.2 열차와 고가철교의 소음발생기구
3. 실험장치 및 방법
    3.1 소음평가
    3.2 진동평가
4. 측정결과 분석
    4.1 고가선로의 소음 측정결과
    4.2 진동에 의한 고체전파음 측정결과
5. 결 론
References

• 김재필(Department of Mechanical Engineering, Wonkwang University Graduate school) | Jae-Pil Kim
• 김병삼(Department of Smart Automotive Engineering, Wonkwang University) | Byoung-Sam Kim Corresponding Author