Experimental test | |||||||
---|---|---|---|---|---|---|---|
Notch type | Number of test repetitions | Min. number of cycles | Max. number of cycles | Standard deviation of cycles | Minimum energy | Maximum energy | Standard deviation of energy |
U-notch radius 0.2 mm | 4 | 22640 | 201,865 | 82391.597 | 0.293 | 0.507 | 0.094 |
V-notch angle 20° | 4 | 521,218 | 151,883 | 75622.87 | 0.229 | 0.461 | 0.107 |
V-notch angle 140° | 4 | 11032 | 311,170 | 129198.70 | 0.166 | 0.504 | 0.143 |
U-notch radius 2 mm | 5 | 25,239 | 341,478 | 125086.76 | 0.112 | 0.283 | 0.074 |
U-notch radius 0.2 mm | 4 | 15254 | 326,645 | 146,519.222 | 0.255 | 0.438 | 0.080 |
V-notch angle 20° | 5 | 150.43 | 151,883 | 67,693.93 | 0.229 | 0.609 | 0.141 |
V-notch angle 140° | 4 | 3890.97 | 85,337 | 42857.97 | 0.253 | 0.538 | 0.139 |
U-notch radius 2 mm | 5 | 22938.2 | 442,920 | 169,677.83 | 0.124 | 0.313 | 0.081 |
Experimental | ||
---|---|---|
Notch type | Correlation coefficients | Experimental: Local energy near notch |
U-notch radius 0.2 mm | R2 = 0.9881 | |
V-notch angle 20° | R2 = 0.9591 | |
V-notch angle 140° | R2 = 0.9656 | |
U-notch radius 2 mm | R2 = 0.8875 | |
U-notch radius 0.2 mm | R2 = 0.967 | |
V-notch angle 20° | R2 = 0.857 | |
V-notch angle 140° | R2 = 0.890 | |
U-notch radius 2 mm | R2 = 0.8305 |
Tensile strength (MPa) | Flexural strength (MPa) | Modulus of elasticity (MPa) | Density (kg/m3) | Elongation (%) | Poisson’s rate | Fracture Toughness (MPa.√m) |
---|---|---|---|---|---|---|
70.5 | 110 | 3000 | 1190 | 6 | 0.3 | 1.863 |