PSI - Issue 39

Abhishek Tiwari / Procedia Structural Integrity 39 (2022) 290–300 Author name / Structural Integrity Procedia 00 (2019) 000–000

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It should be noted that Material-2 properties resemble Waspaloy at 700 o C (Xia et al. 1998) and Material-1 is a hypothetical material with a stronger creep resistance in terms of creep strain rate.

Fig. 1. Material inhomogeneity in a heterogeneous half symmetric compact tension specimen where a sharp transition of material’s creep property takes place along an interface.

In a similar fashion, crack tip transition from an elastic plastic material to elastic creep material is simulated. The material inhomogeneity under such transition in presence of a crack is show in Fig. 2.

Fig. 2. Material inhomogeneity in a heterogeneous half symmetric compact tension specimen where a sharp transition from elastic plastic material to elastic creep material takes place along an interface.