Design of Honeycomb Microperforated Structure with Adjustable Sound Absorption Performance

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Type</td><td class="align_center">Board thickness (mm)</td><td class="align_center">Perforation ratio (%)</td><td class="align_center">Hole spacing (mm)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Upper MPP (MPP<sub>1</sub>)</td><td class="align_center">1</td><td class="align_center">4</td><td class="align_center">0.35</td></tr><tr><td class="align_left">Inner MPP (MPP<sub>2</sub>)</td><td class="align_center">1</td><td class="align_center">8</td><td class="align_center">0.35</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Parameters of microperforated panels.</div>

Shock and Vibration

tab1

Table 1

Table 1: Design of Honeycomb Microperforated Structure with Adjustable Sound Absorption Performance 