Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Stress level (MPa)</td><td class="align_center">175</td><td class="align_center">155</td><td class="align_center">130</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Model</td><td class="align_center">Me</td><td class="align_left"> </td><td class="align_left"> </td></tr><tr><td class="align_left">Goodman</td><td class="align_center">0.134</td><td class="align_center">0.065</td><td class="align_center">0.098</td></tr><tr><td class="align_left">Pwlinear</td><td class="align_center">−0.010</td><td class="align_center">−0.284</td><td class="align_center">−0.226</td></tr><tr><td class="align_left">PNL</td><td class="align_center">−0.509</td><td class="align_center">−0.607</td><td class="align_center">−0.714</td></tr><tr><td class="align_left">Boerstra</td><td class="align_center">−0.360</td><td class="align_center">−0.533</td><td class="align_center">−0.428</td></tr><tr><td class="align_left">Kawai</td><td class="align_center">0.575</td><td class="align_center">0.379</td><td class="align_center">0.405</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of model prediction results for the 2/1 laminates under spectrum loading.</div>

Advances in Materials Science and Engineering

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Table 3

Table 3: Effect of Mean Stress on the Fatigue Life Prediction of Notched Fiber-Reinforced 2060 Al-Li Alloy Laminates under Spectrum Loading 