Issue 30

B. Tyson et alii, Frattura ed Integrità Strutturale, 30 (2014) 95-100; DOI: 10.3221/IGF-ESIS.30.13

Figure 4 : Comparison of calculated crack size with measured size.

a 0q

, mm

a f

, mm





0 0 q a a

a

f  q a a 0 

fcalc meas

R-curve point 

Lab

Spec.

a



 0 9 a a

f

calc.

meas.

calc.

meas.

HT-1 HT-3 HT-5 HT-7 5108 5208 5407 5409

6.92 7.13 7.07 7.37 6.93 6.63 7.80 6.77 7.99 6.20 7.09 7.21 7.50 7.50 7.28 6.38 6.22 6.38 6.70 7.34 7.27 7.91 7.30 7.59 7.26 7.43 7.06

6.95 7.13 7.08 7.36 7.02 6.85 8.04 6.65 7.77 5.82 7.09 7.06 6.81 6.73 6.59 6.59 6.46 6.70 7.01 7.36 7.20 7.88 7.25 7.48 7.17 7.36 6.97

0.996 1.001 0.998 1.000 0.987 0.967 0.970 1.017 1.027 1.066 1.000 1.022 1.101 1.114 1.104 0.968 0.963 0.952 0.956 0.997 1.009 1.004 1.007 1.016 1.013 1.008 1.013 1.108 1.101 1.136 1.104 1.023 0.053

9.32 9.69 8.50 9.35 9.72 9.94 9.67 10.23 10.69 8.76 9.80 8.83 9.99 8.84 7.75 7.59 7.65 7.95 9.55 9.22 8.15 7.82 8.02 7.61 8.32 8.45 8.22 7.92 10.85 9.24 10.08

9.44 9.79 8.63 9.99 9.99 10.43 10.29 9.41 10.82 8.61 9.98 8.62 9.03 8.35 8.16 7.99 8.10 8.43 9.48 9.11 8.04 7.76 7.99 7.68 7.61 7.62 7.21 7.24 11.04 9.07 10.36

0.987 0.989 0.985 0.981 0.936 0.973 0.966 1.028 0.988 1.017 0.982 0.973 1.025 1.106 1.059 0.950 0.950 0.944 0.943 1.007 1.012 0.983 1.019 1.014 1.008 1.004 0.991 1.094 1.109 1.140 1.094 1.008 0.053

0.964 0.963 0.925 0.937 0.960 0.933 0.896 1.004 0.977 0.915 0.936 0.869 0.646 0.841 0.840 0.873 0.901 0.901 0.880 1.025 1.027 0.928 1.061 0.875 0.956 0.921 0.938 1.035 1.142 1.161 1.125 0.947 0.100

A

D

RR5102 RR5109 RR5308 RR5410

E

5103 5205 5406 5504 5505 5507 5509 5401 5104 5101 5508 5408 5105 5201 5202

I

J

L

N

RRT01 RRT02 RRT03 RRT04

6.849 6.842 6.784 6.582

6.184 6.213 5.974 5.963

O

Avg.

Std. Devn.

Table 1 : Results of CANMET round robin: a 0q

and a 0 are initial calculated and measured crack size values respectively, and a f is the

final crack size.

98