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Tz, combining with the corresponding K and T or J and Q, can be applied to establish the three-parameter dominated stress field, which can characterize the 3D crack front field completely as an attempt.
For this technique, the mechanical behaviour of the crack-healed zone is very important for the structural integrity.
We can conclude that it is possible to lead a mechanical analysis until the limits of the sample and even during the appearance and the propagation of a crack.
Thus, first mode shape was helpful in identifying the location of the crack.
The results have shown how initial RCF crack propagation is very microstructurally influenced.
The results showed that the flaw inclination angle affected the mechanical properties of the specimen as well as the initiation and propagation of the first crack.
However, this new contribution requires an accurate determination of the mechanical fields near the crack-tip.
Therefore, it cannot sufficiently reflect the mechanical behaviour surrounding the crack.
The developed procedures simplify the analysis of the description of mechanical fields at a greater distance from the crack tip considerably.
The authors identify high applied stress levels in combination with potential multiple crack initiation as the probable root of the problem and propose a scheme how the model can be extended for taking into account crack initiation.