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In today’s world, automotive manufacturers are required to decrease carbon dioxide emissions and increase fuel economy while assuring driver comfort and safety. To achieve desired acoustic performance targets, automotive manufacturers use various Noise-Vibration-Harshness (NVH) materials which they apply to the vehicle Body-In-White structures either in the body or paint shop. This paper reviews the fundamentals for free layer damping from bending vibration studies and their impact on the development of Henkel’s Liquid Applied Sound Damping materials.

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