A Novel Methodology for Calculating Crack Opening Stress under Tension-Compression Cyclic Load

<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">Contrast item</td><td class="align_center">Calculated result</td><td class="align_center">Cited result</td><td class="align_center">Relative error (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left"><span style="width: 10.9702ptpx;"><svg height="11.4351pt" id="M36" style="vertical-align:-5.47419pt" version="1.1" viewbox="-0.0498162 -5.96091 10.9702 11.4351" width="10.9702pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M393 379C402 394 400 411 393 422C384 437 365 448 348 448C301 448 237 372 186 285H182L193 335C210 408 205 448 178 448C150 448 80 402 29 344L45 321C80 355 114 373 122 373C128 373 130 365 124 330C106 228 76 98 50 -5L57 -12C82 -5 112 3 132 6L172 203C196 256 234 304 254 329C275 355 293 367 306 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666 442 639 429C594 407 514 350 441 252H439L447 289C476 423 450 448 419 448C398 448 379 441 355 427C307 400 234 344 162 249H160L180 324C203 409 197 448 170 448C144 448 82 413 23 349L35 321C57 343 96 374 108 374C115 374 117 371 111 341C87 227 57 112 24 -6L32 -12C53 -4 81 4 108 6C119 68 134 128 149 171C177 229 309 383 364 383C387 383 388 355 373 282C354 190 330 92 303 -6L309 -12C332 -4 356 3 386 6C396 63 411 122 424 171C458 236 590 383 642 383C658 383 664 369 652 315L603 91C587 20 593 -12 619 -12C642 -12 708 23 766 88Z"></path></g></svg></span></td><td class="align_center">6.8</td></tr><tr><td class="align_left"><i>N</i></td><td class="align_center">361 182 cycles</td><td class="align_center">380 192 cycles</td><td class="align_center">5.0</td></tr><tr><td class="align_left"><span style="width: 45.3532ptpx;"><svg height="14.7625pt" id="M39" style="vertical-align:-5.47417pt" version="1.1" viewbox="-0.0498162 -9.28833 45.3532 14.7625" width="45.3532pt" xmlns="http://www.w3.org/2000/svg" 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<div>Verification of Equation <a href="https://static.hindawi.com/articles/amse/volume-2021/1711803/figures/#EEq7" target="_blank">7</a>.</div>

Advances in Materials Science and Engineering

tab3

Table 3

Table 3: A Novel Methodology for Calculating Crack Opening Stress under Tension-Compression Cyclic Load 