25% CLD Coverage. Deadening, Deadener, Dampening, dampen, damp, wet cooch.

[James Bang 5,000+ posts]

25% coverage is the bee's knees I hear and it seems to be the cool new thing to do. BUT. Is there a best way to do the thing to do? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif Can we add some swagger to it?

Say we have a nice flat sheet of aluminum, (some would prefer a paint can) with some nice resonance to it, and we cover 25% of it with CLD tiles. Would it matter where we apply the CLD, or does it not matter?

The following are some examples of ways you can cover 25% of a square sheet of aluminum. Would any be better than the other?

1.

2.

3.

4.

5.

6.

Which would you choose?

Click to read more...

 

[Supergumby5000 5,000+ posts]

whichever created the shortest path of resonation

 

[GetLikeMe 10+ year member]

Id pick #1 cuz its easier hahaha

 

[skydeaner 10+ year member]

Id pick #1 cuz its easier hahaha

I'm with this guy, or 3 cuz strips conform to weird shapes well, and are super easy to apply

 

[Jh8909 10+ year member]

Id pick #1 cuz its easier hahaha

lulz

 

[Anthony Collova 10+ year member]

In theory they will all give about the same results.

I like # 5 though

ANT

 

[DerekSmith07 10+ year member]

#5

 

[perfecxionX 10+ year member]

I'm sure your already aware of this, but i think how the deadener should be applied depends on the particular panel (shape, size, thickness). That's why your supposed to knock around with a mallet to find the best areas to cover.

 

[Rudy 10+ year member]

Without knowing the scale, it's a little difficult to choose one. If we assume the covered pieces are roughly 6"X10" //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif, I'd aim for something like this:

It's really difficult to predict the vibration modes of a panel. We do know that with vehicle panels are terminated systems - the edges are fixed. Since the edges can't move, we can stay away from them.

Tapping is a good way to test a panel's resonance before treatment, but it doesn't tell us a lot about where to treat it. You don't want to treat the points that aren't moving at all and you don't need to treat the area that is moving the most since the CLD will just be going for a ride without being deformed along the way. You want to treat the transition between the two, where the greatest panel deformation will be transferred into the adhesive.

If the pieces are too small, the cross section of the adhesive will be too close to the surface area of the constraining layer. If that happens, the system fails.

25%, weighted toward the center is good enough for me.

 

[denim 5,000+ posts]

That last option would dull my sharp edge before I was done. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[James Bang 5,000+ posts]

That last option would dull my sharp edge before I was done. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

we need shears that can repel butyl

 

[Rudy 10+ year member]

That last option would dull my sharp edge before I was done. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

That's for a large panel like a roof, whole tiles. I never cut unless the panel to be treated is less than 1.5 ft².