Acoustiply Technical
Information.
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Surface
Density:
Panels have a
low surface density in relation to their acoustic attenuation value.
Thickness:
Because you can
receive the panels in 12,18 or 25mm this allows for maximum use of space in the
boat.
MOE and Flexural
Strength:
When the panels
are used for load bearing floors, the following figures apply.
MOE
Longitudinal 3256 Transverse
4809
Flexural
Resistance Longitudinal 29.87 Transverse 47.49
Traction at right
angles to outer surfaces:
(MPa) 0.84
Noise/Sound
Emissions
The basic
insulation between two rooms is the difference in the levels of acoustic
pressure measured in the transmitting room and in the receiving room.
This includes all direct and indirect noises, and is expressed in dB
(A).
The
transmitted noise is known as ‘Rose’ (a constant level for all
frequencies), and as ‘Route’ noise (taking account of the
sensitivity of the ear to different frequencies)
The sound value
of a wall allows evaluation of the direct transmission between one room and
another.
The value
of Acoustiply panels between 2 rooms has been calculated in dB (A) for
‘Rose’ noise transmission and ‘route’ noise transmission. The results
obtained varied from 32 to 34dB (A) in R ‘Rose’ and from 28 to 32dB (A)
in R ‘Route’.
It should
be noted that these figures correspond to a direct transmission and, in
practice, should be lowered by d dB to take account of lateral
transmissions. These results compared with plywood & brick demonstrate
that Acoustiply has a very good acoustic ratio.
|
Material |
Core (mm) |
Overall
Thickness (mm) |
Surface
Density |
Acoustic
Value |
|
R Rose
dB(A) |
R Route
dB (A) |
|
Acoustiply 12
Acoustiply 18
Acoustiply 25 |
4
6
9 |
12
18
25 |
9.47
14.73
19.00 |
32
33
34 |
28
31
32 |
|
15mm
Plywood |
|
15 |
7.00 |
27 |
25 |
|
50mm
Brick, coated two sides |
|
50 |
90 |
36 |
33 |
The size of
the rubber is in 1530 x 1030mm, but our sheet sizes can still be made in the
nominal 8’ x 4’ sheet size.(2440 x 1220mm)
KR8 is 4.68mm and
KR5 (most common) is 3mm
|
Sandwich
Thickness |
Construction |
|
Acoustic Core |
Sandwich
Weight |
|
12mm |
4mm+KR4+4mm |
|
4.0mm |
6kg/m2 |
7.90kg/m2 |
|
18mm |
6mm+KR6+6mm |
|
6.0mm |
8.8kg/m2 |
10.9kg/m2 |
|
25mm |
9mm+KR6+9mm |
|
6.0mm |
8.8kg/m2 |
12.8kg/m2 |
| 
