Validation of an Innovative Viscoelastic Treatment, Integrated on a Real Vehicle Mock-Up for the Internal Vibro-Acoustic Improvement

In the modern transport engineering scenario on large scale, the search for a greater interior comfort is becoming a more increasingly target by all leading companies. Several technological solutions from the aeronautical to the automotive sector, which could allow for the ensuring a high level of efficiency and at the same time safeguarding the environment as well as reducing the manufacturing costs, are carefully under theoretical analysis and experimentation for the achievement of such purposes. The “vibro-acoustic design” of the current and future means of transport is going to become one of the focal points of the technological and commercial challenges which will involve in the coming years the bigger manufacturing houses in the world stage. These trends and next prospects are prompting the exploration for proper both numerical that experimental tools that can support this new ambitious requirement. In this framework, the authors, following depth broad spectrum investigations, have designed and leaded the massproduction of an innovative viscoelastic foam to enhance the sound-absorbing performances than the conventional trim treatments. Noise characterization rational strategies taken on real vehicle have successfully confirmed the results already reached by laboratory tests on the stand-alone components. After a brief digression on the outcomes achieved in the previous works, in this context particular attention it has been rather conferred to the trim-layer assembly in view of the integration in the passengers compartment for the vibro-acoustic qualification.