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Table 1 Experimental results and numerical predictions

From: Recent advancements on the phase field approach to brittle fracture for heterogeneous materials and structures

Composite system and specimen geometry

Experimental results (MPa)

Predictions

Relative error

FFM (MPa)

PF (MPa)

FFM (%)

PF (%)

T700/AR-2527—laminate 1

     

   W/(2R) = 4; 2R = 3 mm

432

465

415

7.8

− 3.9

   W/(2R) = 4; 2R = 6 mm

385

392

368

1.9

− 4.4

   W/(2R) = 4; 2R = 10 mm

367

342

361

− 5.8

− 1.6

T700/AR-2527—laminate 2

     

   W/(2R) = 4; 2R = 3 mm

448

447

403

− 0.3

− 10.4

   W/(2R) = 4; 2R = 6 mm

390

385

358

− 1.2

− 8.2

   W/(2R) = 4; 2R = 10 mm

380

338

345

− 11.1

− 9.2

M40JB/ThinPreg 80EP/CF

     

   W/(2R) = 6; 2R = 1 mm

551

559

524

1.5

− 6.3

   W/(2R) = 6; 2R = 2 mm

470

475

447

1.0

− 5.9

   W/(2R) = 6; 2R = 6 mm

365

356

351

− 2.5

− 3.8

  1. Columns 1, 2 show the specimens geometries for each type of composite material. Column 3 shows the experimental failure stress of the specimen. Column 4, 5 show the numerical prediction of the finite fracture mechanics method and the phase field method. Columns 6, 7 show the errors of the predictions with respect to the experimental results