sound reduction training?

[paintballJim]

All,
We manufacture diesel powered construction equipment and sound attenuation has been a growing concern. We could either hire someone to come in and make suggestions, or we could have someone learn about the concept. I would like to learn about the task so we can do the job in house. Can people here make some suggestions about text books or training materials I can use to learn more about dampening our equipment and controlling the sound?

Thank you

Jim

 

[Tmoose]

Hi Jim,

Do you have the equipment to make detailed sound and vibration measurements? By detailed I mean with frequency content, typically from spectra/FFT measurements ?

Not too many years ago I saw a report from a big name consultant. It included a slew of recommendations for mechanical upgrades/corrections based on his analysis made with an octave band filtered instrument. I was almost embarrased for the guy. Some basic, detailed vibration analysis measurements on the equipment and building surfaces would have eliminated about 90% of the "recommendations." If the custome happened to make a bunch of the modifications from the 90% group I think the the results would have been most disappointing.

 

[GregLocock]

For books I suggest you look at the FAQ for this forum.

I am not aware of any courses on NVH in the USA, but there must be many. In the UK ISVR runs several that are appropriate. With the advent of decent free PC software eg abravibe the barriers to entry are much lower than they used to be - my first 4 channel signal analysis computer cost 3 years wages.


Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[BrianE22]

I'd take a look at Bruel and Kjaer's website for starters.

 

[paintballJim]

Guys, Thanks for the suggestions. I was buried with another project and have just been able to get back to this, sorry for the delay responding. Tmoose, yes we do have vibration and sound equipment and the company has done some work in the past, we just have no one with specific training. That is why I thought using a text book might help us go off only 1/4 cocked rather than the typical blind leading the blind.
I will do more searching on the faq's and spend some time on the web site seeing what I can dig up.

Again

Thanks Jim