자동차 내장 부품의 이음(Buzz, Squeak & Rattle Noise)에 대한 시험적 고찰

The several vibration lest methods have been developed to evaluate and improve the BSR noise which has increased as a quality problem of the automotive interior parts in recent years. To simulate the BSR noise in the laboratory, il is necessary 10 acquire the road profile data and to measure the partial sound level using the sound visualization system, in this case, it is possible to understand the BSR noise level but difficult to identify the cause of noise and propose the improvement of that. In this study, the structural characteristics of the door and scat moduler was investigated through the normal mode test and the source of the BSR noise generated by the exciter with sine sweep signal was analyzed, so tho Improvement and reduction of the BSR noise was confined through the structural treatment based on the results of the structural test and the analysis of noise sources.