Tuning of Multi-layered Acoustic Systems

The ability to utilize existing infrastructure i.e. tools, equipment and machinery to generate a unique acoustic product offering with minimal changes is important. This is because no generic acoustic solution ( material or composite ) exists for different vehicle configurations. Also, recent developments in predictive acoustic engineering and enhanced CAE capabilities as applied to development of optimal flat sample criteria for in-vehicle transmission loss and absorption performance allow for reverse engineering of the noise control systems. This reverse engineering coupled with a flexible manufacturing system will allow customization or tuning for any given program. Cost effective acoustic systems that can provide optimal insertion loss/absorption ratios utilizing a common manufacturing process will be the enabler to sustain competitive advantage.

New materials, manufacturing processes and concepts regarding the treatment of automotive noise problems have provided the opportunity for enhanced tuning of multi-layered systems. The ability to control parameters of the multiple layers in an acoustic system allows for the optimization of transmission loss and absorption.