FIELD: construction.
SUBSTANCE: panel includes corrugated and honeycomb fillers, perforated and solid coatings, the filler made of perforated and corrugated material consisting of alternating with each other upper and lower corrugated strips, the upper corrugated stripes of the filler are connected to the mesh. The honeycomb filler is located between the mesh and perforated coating and is connected to each other.
EFFECT: noise reduction over a wide frequency range.
2 cl, 1 dwg, 1 ex
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Authors
Dates
2017-07-14—Published
2015-05-28—Filed