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News

Steel laminate cuts structure-borne noise

Acousteel : 31 October, 2004  (New Product)
Acousteel offers an effective and straight forward way to remove unwanted noise and vibration from any steel or aluminium sheets, panels, pressings etc which have inherent noise problems.
Acousteel offers an effective and straight forward way to remove unwanted noise and vibration from any steel or aluminium sheets, panels, pressings etc which have inherent noise problems.

Acousteel is constructed like a sandwich with a thin (0.05mm) energy-absorbing layer of viscoelastic polymer in the centre of two metal skins. The result of this is an audibly sound dead steel panel.

Acousteel works by using constrained layer damping. This basically absorbs sound and/or vibration energy by the two skins of material moving relative to one another. This movement creates sheer strain, which in turn is dissipated as negligible heat. Incredibly, this creates up to a 30dB(A) reduction in sound. Acousteel's benefit to airborne sound is not significantly different to standard steel in usual frequency ranges of 125Hz to 4kHz. Airborne sound is reduced by adding mass and the mass of Acousteel is no different to standard steel of the same gauge.

However, below 125Hz and above 4kHz these frequencies resonate structures like the heavy bass from a professional hifi system. This is airborne transmission and this is where Acousteel is a huge benefit.

Acousteel manufactures two main products both of which are derivatives of sound deadened/dead zintec, metal, aluminium and steel. Acousteel laminated panel (sound deadened steel/metal) is a sound dead CLD panel used in acoustic doors, heating and ventilating equipment and top end hifi equipment as manufactured by Arcam.

Acou-stik acoustic damper (Aludamp/Alidamp) is an adhesive steel/aluminium damper for use where the Acousteel panel is inhibited through engineering etc. This retrofit damper can be used where ever structure-borne noise and manufacture is an issue.

Materials can be mixed, for example a veneer of Stainless Steel can be bonded to a thicker less expensive mild steel substrate, giving both an acoustic solution and cost effective alternative to monolithic Stainless sheet, when anticorrosive properties are required on only one face of the panel.

Acousteel will reduce unwanted noise and vibration by over 1000%
Acousteel is cost effective compared to traditional solutions
Acousteel is invisible simply replacing existing parts
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