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

<table class="table-group" id="tab4"><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">80.08</td><td align="center">227.11</td><td align="center">425.87</td></tr><tr><td align="left">Updated model (Hz)</td><td align="center">80.47</td><td align="center">233.40</td><td align="center">448.24</td></tr><tr><td align="left">Error (%)</td><td align="center">−0.48</td><td align="center">−2.77</td><td align="center">−5.25</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 single damage case.

Shock and Vibration

tab4

Table 4

Table 4: Damage Detection Technique for Cold-Formed Steel Beam Structure Based on NSGA-II 