Energy Harvesting with Piezoelectric Element Using Vibroacoustic Coupling Phenomenon

<table>Contribution of acoustic mode to sound field at (a) <svg height="16.3125" id="M257" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 37.3125 16.3125" width="37.3125" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> [deg] and (b) <svg height="16.3125" id="M258" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 45.474998 16.3125" width="45.474998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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q53 0 90 28q4 31 4 66q0 51 -9.5 95.5t-39 80.5t-75.5 36z" id="x39"></path></g><g transform="matrix(.017,-0,0,-.017,37.239,11.813)"><path d="M241 635q53 0 94 -28.5t63.5 -76t33.5 -102.5t11 -116q0 -58 -11 -112.5t-34 -103.5t-63.5 -78.5t-94.5 -29.5t-95 28t-64.5 75t-34.5 102.5t-11 118.5q0 58 11.5 112.5t34.5 103t64.5 78t95.5 29.5zM238 602q-32 0 -55.5 -25t-35.5 -68t-17.5 -91t-5.5 -105
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</svg> [deg].</table>

Advances in Acoustics and Vibration

fig4

Figure 4

Figure 4: Energy Harvesting with Piezoelectric Element Using Vibroacoustic Coupling Phenomenon 