Root Crack Identification of Sun Gear in Planetary Gear System Combining Fault Dynamics with VMD Algorithm

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Crack number</td><td class="align_center">1<sup>#</sup> crack</td><td class="align_center">2<sup>#</sup> crack</td><td class="align_center">3<sup>#</sup> crack</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Crack length (mm)</td><td class="align_center">1.43</td><td class="align_center">3.92</td><td class="align_center">8.47</td></tr><tr><td class="align_left">Crack width (mm)</td><td class="align_center">0.54</td><td class="align_center">0.69</td><td class="align_center">1.34</td></tr><tr><td class="align_left">Crack height (mm)</td><td class="align_center" colspan="3">0.50</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Actual crack parameters of tested gear.</div>

Shock and Vibration

tab7

Table 7

Table 7: Root Crack Identification of Sun Gear in Planetary Gear System Combining Fault Dynamics with VMD Algorithm 