How to Go Lighter, But Quieter
Imagine planning a summer day at the beach. With a heavy beach bag in tow, you arrive at the water’s edge only to discover that noise from speedboats are poking holes through your vision of a relaxing and quiet day.
What’s wrong with this scenario? Let’s remove the weight of the bag and the irritating sounds to restore serenity to its rightful place.
The auto industry is currently tackling these issues — heaviness/vehicle weight and noisiness — to enhance user experience and to reduce fuel consumption and emissions.
A Lightweighting Problem
Alternative materials, such as lightweight aluminum and magnesium, are often used to reduce vehicle weight. However, these thinner materials have a tendency to increase noise, vibration and harshness (NVH) because the reduced weight and thickness enhance sensitivity to vibration and sound.
Lightweight metals and alloys used in vehicle-body construction can increase road and wind noise in the passenger cabin, especially when a driver is on a bumpy road or driving on the freeway.
Traditionally, manually-applied bitumen mats and anti-flutter mastics have provided NVH protection for these vehicles. Today, more innovative solutions are available that don’t require manual application.
New NVH Solutions
Henkel’s cutting-edge technologies improve acoustics and sound damping, structural reinforcements, bonding and fastening, leading to enhanced stiffness and durability that simultaneously reduce NVH and vehicle weight, such as:
- TEROSON® Liquid Applied Sound Deadener (LASD): During the assembly process, this sound-damping technology can be sprayed onto vehicle bodies by robots, replacing bitumen mats. The spray is made up of polymers, sustainable raw materials and other active components to meet specific sound damping requirements. Overall, LASD is the right solution to reduce weight, fuel consumption and noise in vehicles.
- TEROSON® High Damping Foam: Designed for body applications such as doors and roof panels, this 2-in-1 product eliminates the need for anti-flutter mastics, while providing vehicle lightweighting.
Check out the video below to learn more about these Henkel technologies:
At Henkel, we value continuous product improvement. Our TEROSON technologies undergo frequent testing and evaluation to be sure they meet the changing needs for vehicle-body lightweighting and sound damping. We employ several product tests in our state-of-the art acoustics lab located in Madison Heights, Michigan.
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