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Tuesday, July 9 • 16:50 - 17:10

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Some porous media known as melamine foam absorb sound from their three-dimensional network of thin struts. We show here that their exceptional ability to mitigate sound energy is related to a bimodal pore size distribution, which consists of co-existing pores of distinct characteristic sizes, in which the low frequency and high frequency fluid flow will follow different paths in the pore structure. The design of this visco-inertial dissipative "multi-scale" structure can be tuned on a commercial scale and may find application in improving sound absorption by, for example, a proper modification of the proportion of the chemical agents used to produce a melamine resin foam.

avatar for Mohammad Rafiee

Mohammad Rafiee

Postdoctoral Fellow, Polytechnique Montréal
Mohammad Rafiee received his Ph.D. degree in Mechanical Engineering from the University of Ottawa in 2018. Currently, he is a Postdoctoral Fellow at Polytechnique Montreal in Canada. His research interests are primarily focused on the development of advanced composite materials, smart... Read More →


Tuesday July 9, 2019 16:50 - 17:10 EDT
Outremont 6
  T08 Mat. for noise & vibr. cntrl., SS02 Vibr damping materials

Attendees (2)