Dataset for: "Fatigue assessment of structural components through the Effective Critical Plane factor"

<p>This dataset contains the <strong>Effective Critical Plane (ECP)</strong> post-processing of the classic fatigue experiments by Susmel &amp; Taylor (2007, 2008) on En3B low-carbon steel specimens with holes and notches.<br>The re-analysis, carried out with the <strong>Fatemi&ndash;Socie (FS) variant</strong> of the ECP methodology, is presented in</p> <blockquote> <p>Chiocca A., Frendo F. &ldquo;Fatigue assessment of structural components through the Effective Critical Plane factor,&rdquo; <em>International Journal of Fatigue</em> 189 (2024) 108565. </p> </blockquote> <h3>1&ensp;File-naming convention</h3> <div> <div dir="ltr"><code><span><span>&lt;<span>CPvariant</span></span></span>&gt;_<span>&lt;<span>SeriesID</span></span>&gt;_<span>&lt;<span>LoadMode</span></span>&gt;_<span>&lt;<span>Geometry</span></span>&gt;_<span>&lt;<span>Size</span></span>&gt;_R_<span>&lt;<span>LoadRatio</span></span>&gt;[ _Phi<span>&lt;<span>PhaseDeg</span></span>&gt; ].txt </code></div> </div> <div> <div> <table> <thead> <tr> <th>Token</th> <th>Meaning</th> <th>Examples</th> </tr> </thead> <tbody> <tr> <td><strong>CPvariant</strong></td> <td>Critical-plane parameter used: <code>FS</code> (Fatemi&ndash;Socie) or <code>SWT</code> (Smith-Watson-Topper)</td> <td><code>FS</code>, <code>SWT</code></td> </tr> <tr> <td><strong>SeriesID</strong></td> <td>Progressive integer that groups related tests</td> <td><code>1</code>, <code>2</code>, &hellip;</td> </tr> <tr> <td><strong>LoadMode</strong></td> <td>Type of loading</td> <td><code>Axial</code>, <code>Torsion</code>, <code>InPhase</code>, <code>OutPhase90</code></td> </tr> <tr> <td><strong>Geometry</strong></td> <td>Specimen geometry</td> <td><code>Hole</code>, <code>UNotch</code>, <code>VNotch</code></td> </tr> <tr> <td><strong>Size</strong></td> <td>Characteristic size in mm (decimal point &rarr; &ldquo;_&rdquo;)</td> <td><code>3_5</code> &rarr; 3.5 mm hole; <code>0_2</code> &rarr; 0.2 mm notch root</td> </tr> <tr> <td><strong>R &lt;LoadRatio&gt;</strong></td> <td>Stress (or shear) ratio <em>R</em></td> <td><code>R_-1</code>, <code>R_0</code>, <code>R_0_1</code></td> </tr> <tr> <td><strong>_Phi&lt;PhaseDeg&gt;</strong></td> <td>(Only for combined loading) axial&ndash;torsional phase shift</td> <td><code>_Phi90</code></td> </tr> </tbody> </table> <div> <div>&nbsp;</div> </div> </div> </div> <p><strong>Example</strong> &ndash; <code>FS_1_Axial_Hole_3_5_R_-1.txt</code> stores FS-ECP data for a 3.5 mm-diameter holed specimen under fully-reversed axial loading (<em>R</em> = -1).</p> <h3>2&ensp;Column definitions</h3> <ol> <li> <p><strong>Nf_exp</strong> &ndash; experimental number of cycles to failure</p> </li> <li> <p><strong>ECP_factor</strong> &ndash; Effective Critical Plane factor (FS or SWT)</p> </li> <li> <p><strong>Nf_pred</strong> &ndash; predicted number of cycles to failure from the calibrated ECP model</p> </li> </ol> <p>Units: stresses in the underlying calculations are in MPa; cycle counts are absolute.</p> <h3>3&ensp;Experimental campaign (summary)</h3> <ul> <li> <p><strong>Material:</strong> cold-rolled low-carbon steel En3B; chemical and mechanical properties are reported in Table 1 of the article. </p> </li> <li> <p><strong>Geometries:</strong> through-holes &Oslash; 3.5 mm &amp; &Oslash; 8 mm, flat U-notch (radius 1.5 mm), flat V-notch (radius 0.12 mm), plus cylindrical V-notches with root radii 0.2 &ndash; 4 mm. </p> </li> <li> <p><strong>Loading conditions:</strong> pure axial, pure torsion, proportional axial&ndash;torsion (&phi; = 0&deg;) and non-proportional axial&ndash;torsion (&phi; = 90&deg;); stress ratios <em>R</em> = -1, 0, 0.1. </p> </li> <li> <p><strong>ECP settings:</strong> the optimal control radius for the FS factor is 0.20 mm, established by best-fitting V-notched and &Oslash; 8 mm hole datasets. </p> </li> </ul> <h3>4&ensp;Re-use &amp; reproducibility</h3> <ul> <li> <p>MATLAB scripts implementing the FS ECP algorithm are available at <strong><a href="https://github.com/achiocca1/ECP" target="_new" rel="noopener">https://github.com/achiocca1/ECP</a></strong> (MIT licence).</p> </li> <li> <p>Finite-element meshes can be shared on reasonable request to the corresponding author.</p> </li> <li> <p><strong>Please cite both this Zenodo record and the journal article</strong> when you use the data.</p> </li> </ul>