Abstract
Methodology of fatigue assessment of structures and, in particular, welded structures in service conditions displayed in Chaps. 5 and 6 is exemplified in the following. The application of the S-N criteria for fatigue of welded joints and structural components supported by the linear damage accumulation procedure is illustrated in coherence with requirements of the rules for fatigue design and evaluation of fatigue life of structures. The two examples are focused on fatigue assessment of joints in tubular structures and one example shows the use of methodology for fatigue design of ship superstructure design carried out in cooperation with a shipyard. Also, one feasible application of the strain-life criterion is shown in example of extending fatigue life of a structure by drilling out the crack tip technique.
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- 1.
The criterion is selected provisionally, looking for simplicity of the analysis.
- 2.
Weld toes at the chord shell and at the brace shell.
- 3.
The term “equivalent” is applied here since the irregular loading is substituted by composition of cyclic loading successions.
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Petinov, S.V. (2018). Examples of Fatigue Assessment of Structural Details. In: In-Service Fatigue Reliability of Structures. Solid Mechanics and Its Applications, vol 251. Springer, Cham. https://doi.org/10.1007/978-3-319-89318-1_7
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