https://bksv.com/media/doc/bn1827.pdf
I was reading this paper on wheel well sound absorption and i was wondering if any of you know have any idea what materials they used. The paper says "The material selected for the wheel liner was a nonwoven material made from polyester fibers" but like that is kind of a wide variety of materials and from a quick google search, i cant actually find any for sale. I think i'd like to try my hand at something similar in my tire wells. Some fiberglass wheel wells with an adsorption material behind it maybe make a mlv outer layer.
Any ideas on a good material? Would a Material/Mlv/material sandwhich be more effective?
These look workable. https://www.amazon.com/BXI-Sound-Abs.../dp/B07C31RYNN
also this list looks useful. http://johnlsayers.com/Stuff/AbsorptionCoefficients.htm
Thoughts?