News
If the ductwork has an inner wall it should be no less than 23 percent open area. Solid inner-wall or perforated walls wrapped with a polyethylene sheet could destroy most of the noise control of the ...
In engine exhaust systems, perforated element is usually used to improve the acoustic attenuation performance of mufflers. To predict the acoustic attenuation performance of perforated duct mufflers ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results