Experimental Transfer Path Analysis Without Disassembling the Structure

摘要

The optimization with respect to interior noise and vibration is important for several applications. The sound and vibration level in all kinds of cavities (the interior of a car, train, airplane, etc.) must be minimized as much as possible. One of the elements in the optimization process is the identioncation of the sources and the ways in which the disturbances are propagated. To tackle these problems a new kind of Transfer Path Analysis has recently been developed. This technique has two major advantages. First of all, there is no longer a need to disassemble the system, which makes this procedure very fast in comparison to other Transfer Path techniques. The other beneont of this technique is that it also estimates the dynamic stiffness of the links. In the onrst section of this contribution this new technique will be explained. In the second section some simulation data will show the effectiveness of the technique and at the end of this contribution some experimental results will be discussed.