Issue 58

B. V. S. Kumar et alii, Frattura ed Integrità Strutturale, 58 (2021) 105-113; DOI: 10.3221/IGF-ESIS.58.08

Figure 4: Load to Displacement Curve for Various Temperatures

Fracture Toughness K IC ( MPa m )

Sl No.

P max (kN) 1.35 1.27 1.17 1.06 0.81

P Q (kN) 1.28 1.20 1.05 0.90 0.70

Variation in K IC to Room Temp.

Temperature (°C)

1 2 3 4 5

28°C (Room Temperature)

8.27 7.75 6.78 5.81 4.52

-

400°C 500°C 600°C 700°C

6 %

18 % 29 % 45 %

Table 1: Fracture Toughness Results at Various Temperatures

Figure 5: Fracture Toughness at Various Temperatures

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