Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Fe (1)</td><td class="align_center">Fe (2)</td><td class="align_center">Fe (3)</td><td class="align_center">Fe (4)</td><td class="align_center"><i>N</i><sub><i>E</i></sub></td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Healthy</td><td class="align_center">0.85503</td><td class="align_center">0.13411</td><td class="align_center">0.00956</td><td class="align_center">0.00130</td><td class="align_center">0.52484</td></tr><tr><td class="align_left">Prefabricated crack</td><td class="align_center">0.81584</td><td class="align_center">0.17274</td><td class="align_center">0.009691</td><td class="align_center">0.00174</td><td class="align_center">0.61717</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Damage detection index value of pillar porcelain insulator under harmonic excitation.</div>

Shock and Vibration

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Table 2

Table 2: Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator 