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-   -   The Damping Material and Sound Deadener Thread (https://www.team-bhp.com/forum/car-entertainment/13307-damping-material-sound-deadener-thread-80.html)

Thanks Sukiwa. I will check at those shops.

Pored over this thread over the past few hours. I would be grateful if experts here can clarify my understanding. Please correct me wherever I'm wrong. I'm totally new to this and am exploring how to improve nvh in my car.

Noise/vibration source precedence :
i). Engine and suspension vibrations
ii) Tyre noise from rubber flexing and air escaping grooves
iii). Ambient Air (shouting pedestrians, traffic, wind from the car itself etc) on hitting sheet metal body panels of car.

I've taken the liberty to use a new term to help me understand :
Drum-worthiness (DW) of a metal panel (ability to transmit vibrations coming from the fastened edges to the air/material in contact with majority of it's central area, like a drum does or even air waves hitting inner/outer part of the panel and sound getting transmitted from the other side) can be roughly summarized as , DW ~= (area of panel uninterrupted by structural changes) / (thickness of the metal used to make the panel).

The highest priority should be to dampen components that have highest DW. Will this be the right DW priority for a sedan , inorder to make it more robust againt nvh ? (not specific for better music experience, but overall nvh in general, assume that there is no such thing as ICE in the car)

1. Roof
2. Front door outer panel (side impact beams are not touching outer sheet metal)
3. Rear door outer panel
4. Rear seats' bottom (area above fuel tank)
4. Firewall area and front wheel wells
5. Boot floor (area between Stepney cavity and rear seats) and rear wheel wells
6. Cabin floor (putting this behind 4,5, since this is part of monocoque chassis and has lots of stiffening creases already present. Plus already OE damped to an extent and also having carpets and footmats)
7. Door inner panels.

Best practices to stick damping mats :
A. Be at the centre of panel as much as possible, outer edges should be last priority to cover
B. Better to have 4 pieces stuck touching each other in the center , rather than scatter-sticking the pieces equidistantly over entire panel.
C. Heat gun to be used on metal before sticking the mats.
D. Cleaning the panel with IPA or some other solvent is as important as sticking itself.

Please correct all mistakes, so that it can help me plan my priority of attack with a trickle flow of budget. Not so much focussed on audio experience, interested in general nvh rather.

Hello,

I have a fairly different but similar requirement. I would like to sound deaden my top box on the motorcycle.

I carry a bunch of stuff in it, and they regularly jump around in the top box creating a racket. I would also like to protect stuff inside from scratching themselvea against the innards of the box.

Would this kind of damping mat work? I intend to fix velcro patches inside and then velcro mate the mat precisely to the box (no gum etc). I was looking at the dampmat felt series, soft and plush and extremely thin to save space is what i would like on the inside. The mat also has to be very form fitting.

Any thoughts? And where can I get this in Bangalore?

This is what I got from Dampmat this morning through the mail

Tried the number and got no response, so followed up with Dampmat on pricing and got a prompt reply.

Hope it helps.

Jesus, the most i will need is a couple of square feet, i dont need an inner lining for the entire bike ��!

Isn't damping sheets a bit extravagant for this purpose? :D I guess some sort of thin foam material ought to do the job. The kind of soft grey or translucent white Styrofoam that comes wrapped around products sometimes. It is super thin and easy to paste onto any form or surface.

That thing is horrible man, i prefer something a bit more plush for my helmet :D

Dampening world reduce ringing, but not prevent the noise of hard items banging against the side. Dampening materials have no softness (in my limited knowledge). A soft lining might Indeed be better.

You sir are a rare breed :thumbs up might I suggest cutting up a yoga mat in that case?

Have thought about it... But a yoga mat will not fit to form. Too thick. I will need to look up liner materials which are thinner and more flexible to fit to form.

I would like to get some damping done on my Grand i10 to reduce road noise and improve the sound quality a bit which will help make drives more relaxing and comfortable. I am having a Pioneer touch unit with some JBL components. Any recommendations of a place in Gurgaon/Delhi who does it at a not so exorbitant cost? Any price estimate for the same?

I am offered damping sheets of Viber brand. The quote for four doors is 6.5k. I did not find any information about this brand. Does anyone knows about this brand? Is the price reasonable ?

guys need info please, I went thru the thread which has tons of info on damping but I am still left me confused.

I am planning for a ICE upgrade for my Maruti Brezza and also want to go for Sound damping

my main question is do I need to go for damping for both inner & outer panel of all the 4 doors ?

and what size sheet would I need for one door damping?, Dampmat offers 16"x36"inch for a sheet, so how sheets would I need to damp all 4 doors ?

Only the inner wall of the outer (metal) panel needs to be damped. Assume an average of 1 (16" x 36") sheet per door. If you want to be diligent maybe 5 sheets over 4 doors.

like shown in these two below photos ? I am little confused when u say "inner wall of the outer (metal) panel"