Issue 47

Yu. G. Matvienko et alii, Frattura ed Integrità Strutturale, 47 (2019) 303-320; DOI: 10.3221/IGF-ESIS.47.23 313 Specimen’s notation T5_20H T5_13H T5_16H T5_12H T5_18H T5_19H T5_17H Loading cycle number C N 0 1000 2000 3000 4000 5000 6000 Lifetime, % 0 16 32 48 63 79 95 1 , mm a  2.30 2.04 2.14 2.23 2.15 2.21 2.05 2 , mm a  4.36 4.09 4.0 4.02 4.08 4.0 4.00 3 , mm a  6.27 5.76 5.89 5.77 5.81 5.63 5.94 0 ,μm v   –9.69 –2.95 –5.23 –3.99 –5.32 0 0 1 ,μm v   7.41 4.94 3.23 4.37 4.85 –2.66 –3.61 2 ,μm v   16.53 13.97 14.73 15.01 14.30 9.88 9.31 1 , MPa m I K   –2.6 –2.4 –4.8 –2.9 –3.0 0 0 2 , MPa m I K   8.85 5.3 5.1 6.45 6.7 1.7 –1.3 3 , MPa m I K   16.05 11.8 12.4 12.3 12.5 9.0 9.9 1 , MPa T  –58.7 –4.0 15.8 6.3 –10.8 –14.6 –14.3 2 , MPa T  –141.8 –136.9 –95.5 –142.1 –121.6 –96.5 –65.3 Table 3 : Nomenclature of T5-H1 specimens and the cycle number. Specimen’s notation T5_21H T5_22H T5_23H T5_24H T5_25H T5_26H T5_27H Loading cycle number C N 1000 2000 3000 6000 9000 12000 15000 Lifetime, % 0.063 0.13 0.19 0.38 0.57 0.76 0.95 1 ,mm a  2.36 2.35 2.56 2.52 2.55 2.62 2.44 2 ,mm a  4.25 4.20 4.75 4.59 4.55 4.86 6.60 3 ,mm a  6.16 6.24 6.66 6.61 6.38 6.39 8.39 0 ,μm v   0 0 0 0 0 0 0 1 ,μm v   6.2 7.13 10.74 10.17 10.64 10.93 4.66 2 ,μm v   15.9 16.72 18.05 18.43 18.61 15.87 18.62 1 , MPa m I K   0 0 0 0 0 0 0 2 , MPa m I K   7.5 8.1 10.1 8.9 11.4 10.3 3.4 3 , MPa m I K   12.6 14.4 15.6 14.7 18.2 15.6 18.8 1 , MPa T  –28.9 –34.2 –38.2 –39.2 –47.9 –45.6 –31.6 2 , MPa T  –129.6 –124.7 –162.3 –138.0 –167.5 –197.2 –104.0 Table 4 : Nomenclature of T5-H2 specimens and the cycle number.