PDP
is a self contained viscoelastic layer that can be incorporated into FRP.
PDP
is light weight and the viscoelastic layer has been optimized to raise the
typical sandwich panel’s loss factor 5 to 10 times over a wide frequency
range, which leads to a reduction in sound radiation and an improvement in
transmission loss by 7 – 10 dB
The
sound pressure levels measured in a boat before
and after PDP had been added to the engine room bulkhead wall showed an
improvement in sound insulation of between 5 and 15 dB in the frequency range 125Hz to 4KHz.
These
damping material when used in combination with American Acoustical Products’
sound absorption materials such as Hushcloth® and
Hushpanel can give
levels of comfort normally only achievable by installations incorporating extremely heavy standard
acoustical materials
Key Benefits
Very little added weight
Laminated directly as the standard bulkhead/ deck is cured
Increased sound transmission loss for no added mass
