A Study on the Interior Noise Characteristics of KTX with Improved Mud Flap for Various Track Conditions

머드플랩이 개선된 KTX차량의 궤도구간별 실내소음 특성에 관한 연구

There has been an increasing demand for the mitigation of noise and vibration caused by KTX. One of considered noise reduction methods which is to enlarge mud-flap in gangway was selected and the replacement of all KTX mud-flaps by improved mud-flaps was completed recently. To investigate the noise characteristics of KTX with improved mud-flap, the measurement was performed. Based on the measurement results, the assessment of noise level, noise characteristics by speed and pure tone analysis for various track conditions was executed. It is shown that the use of improved mud-flap is effective to reduce the interior noise of KTX.