Damage Detection Technique for Cold-Formed Steel Beam Structure Based on NSGA-II

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left"> </td><td align="center">First mode</td><td align="center">Second mode</td><td align="center">Third mode</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Measurements (Hz)</td><td align="center">77.43</td><td align="center">181.22</td><td align="center">340.65</td></tr><tr><td align="left">Updated model (Hz)</td><td align="center">77.51</td><td align="center">180.68</td><td align="center">341.79</td></tr><tr><td align="left">Error (%)</td><td align="center">−0.10</td><td align="center">0.30</td><td align="center">−0.33</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Comparison of natural frequencies from measurements and updated model for multiple damage case.

Shock and Vibration

tab6

Table 6

Table 6: Damage Detection Technique for Cold-Formed Steel Beam Structure Based on NSGA-II 