Fully Noncontact Wave Propagation Imaging in an Immersed Metallic Plate with a Crack

<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 align="left" rowspan="2">Number of repeat scanning</td><td align="center" colspan="3">Signal-to-noise ratio (dB)</td></tr><tr class="thead"><td align="center">Free plate</td><td align="center">Water-immersed plate</td><td align="center">Glycerin-immersed plate</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">1</td><td align="center">26.01</td><td align="center">22.67</td><td align="center">20.71</td></tr><tr><td align="left">10</td><td align="center">28.80</td><td align="center">28.23</td><td align="center">26.18</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

SNR comparison related to immersion and repeat scanning.

Shock and Vibration

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Table 1

Table 1: Fully Noncontact Wave Propagation Imaging in an Immersed Metallic Plate with a Crack 