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Noise Abatement Laminated Shims

 

Laminated shims in SILENTLINE®*

  
   

Documentation to download - A4 Size Documentation to download - US Letter size
(A4 - 124 Ko) (Letter - 124 Ko)

 

Overview of SILENTLINE® laminated shims

  

Laminated shim in SILENTLINE®

Any mechanical assembly in working order generates vibrations that are source of harmful frequencies.

Finding a solution to this critical drawback, Daniel GASTEL designed and patented a new laminated product called SILENTLINE®.

SILENTLINE®Silentline Laminated Shim is a composite of metal and synthetic material, which has the key advantage of spreading the vibrational energy over a dramatically wider band (lower Q factor) - therefore dampening the transmission of potentially destructive harmful frequencies. Product picture here.

 

Advantages of SILENTLINE® laminated shims

  
  1. The cost of SILENTLINE® laminated shims is virtually equivalent to that of shims made of other laminated Materials. So there is no economic obstacle to their use.
  2. The mechanical characteristics of laminated shims are improved with this material.
    CETIM tested two probes, both in 2 mm (0.08 inch) thickness:
    1. The first one, of conventional form, entirely consisting of peelable metal leaves: achieved Vickers value = 440 MPA.
    2. The second one manufactured in the new material: achieved Vickers value = 510 MPA.
  3. SILENTLINE® laminated shims which thus require less maintenance being less subject to wear.
  4. Other asset of this product and reasons why it was designed:
    1. It contributes to improvements of the working environment, of benefit to all users.
    2. It makes it easier to achieve the demands of noise abatement legislation

 

Performances of SILENTLINE® laminated shims

  

Test results diagram on SILENTLINE® shims

Tests carried out by CETIM on this new materiel show its capacity to tone down − in a spectacular way − the two consequences of a harmful frequency emission:

  • Absorption or dampening and dispersion of 45 to 50 % of the amplitude
  • Reduction by 50 to 55 % of the emission duration.

This is therefore a high performance material

Click on the thumbnail for a larger image of CETIM** diagram.

 

Available thicknesses for laminated shims in SILENTLINE®

  
Materials Specific Weights Thicknesses of Laminations inches / mm
.001
0,025		 .002
0,05		 .003
0,075		 .004
0,1
   
Stainless Steel
1.4300, 302, S30200		 < 8,2   x x x
1.4301, 1.4350 304S15, 304S31, 304, S30400 x x x x
1.4306, 304S11, 304L, S30403   x x x
1.4401/1.4436, 316S16/316S33, 316, S31600   x x x
1.4404/1.4435, 316S12/316S13, 316L, S31603   x x x
Steel
1.1121, 040A10, 1010, G10100		 < 8,2 x x x x

 

 

As a conclusion

  

SILENTLINE® shims can be substituted for any other wedging process:

  • They do not have any cost or use inconvenience
  • They offer several additional services (notably silence and life duration) which are of paramount importance today.

 

For more information: .

* SILENTLINE = Trademark registered, Patent N° 9401653
**The various diagrams of test carried out by CETIM can be supplied on request.