Abstract
Keywords: Vibro-acoustic testing, Path Analysis, Source identification
15 years of NVH applications make Transfer Path Analysis (TPA) appear a commodity tool. But, despite the fact that TPA is today used in a large variety of applications, a main bottleneck of conventional TPA is the required test time to build the full data model. Several new approaches have been developed over the past years that try to circumvent this limitation such as the-Operational TPA approach. While indeed being very time-efficient, this approach however suffers from several inherent limitations that may lead to incorrect path contributions and wrong engineering decisions. Typical examples are (i) the cross-coupling effects between the path references, (ii) the contributions of forgotten paths and (iii) illconditioning problems, all leading to unreliable interpretations. A novel TPA approach is therefore introduced overcoming these limitations for airborne as well as structure borne problems. This new approach, which is based on the use of parametric models for the operational loads, allows balancing path accuracy and speed of execution. The principles of the new approach are outlined and applied to an automotive customer problem.