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. 2016 Sep 2;6:32397. doi: 10.1038/srep32397

Table 2. Comparison of mechanical testing failure load vs. failure load found from FEA, Curve beam and straight beam model.

Sample No. Intact
Defect
Mech FEA Curve Straight Mech FEA Curve Straight
1 7852 7416 8533 9318 3002 4149 2856 6163
2 5007 4501 6474 6626 1853 3367 1619 2077
3 5031 5173 5046 10785 2181 2034 2465 7227
4 4728 5197 4192 5587 2806 3541 2201 6462
5 4141 3281 6347 9202 1237 1421 1898 5117
6 4660 4886 4765 8587 3960 4981 5332 10740
7 11034 11477 11047 13861 3980 4976 5419 7134
8 7970 7372 8462 9669 5985 6055 6988 11992
9 6821 7132 7974 13491 6547 7254 6733 11611
10 10470 9029 8852 9827 8815 8787 8594 8899
Failure Load Average (N) 6771 ± 2498 6547 ± 2440 7169 ± 2170 8719 ± 2965 4037 ± 2394 4656 ± 2273 4410 ± 2508 9695 ± 2601
Bland-Altman method, 95% Cl   −1032 to 1482 −2503 to 1707 −7541 to 1693   −1732 to 493 −1776 to 1028 −8052 to 641
Mean ± SD of difference vs. mechanical testing   225 ± 641 −398 ± 1074 −2924 ± 2356   −619 ± 568 −374 ± 715 −3705 ± 2218
P-value (paired t-test)   0.2965 0.2714 0.0035   0.0072 0.1327 0.0005
Kendall Tau ranking coefficients (mechanical testing vs other methods)   0.82 0.73 0.51   0.91 0.87 0.56
  Total
  Mech FEA Curve Straight
Failure Load Average (N) 5404 ± 2764 5601 ± 2491 5790 ± 2685 7742 ± 3111
Bland-Altman method (N), 95% Cl   −1631 to 1236 −2127 to 1355 −7749 to 1120
Mean ± SD of difference vs. mechanical testing   −197 ± 731 −385 ± 888 −3315 ± 2262
P-value (paired t-test)   0.2419 0.067 2.8e-6
Kendall Tau ranking coefficients (mechanical testing vs other methods)   0.83 0.84 0.53