Design guidance on fatigue of welded stainless steel joints
- TWI, Cambridge (United Kingdom). Structural Integrity Dept.
Stainless steels are used increasingly in welded components where they are subjected to repeated loading and must therefore be designed to avoid fatigue failure. However, there is a surprising lack of suitable fatigue design data for welded stainless steel with little guidance for engineers in the existing fatigue design codes. On the other hand, many fatigue data exist for welded joints in carbon manganese (C-Mn) steels which formed the basis of current design rules for steel structures. There is therefore a need for fatigue design guidance for welded stainless steel components similar to those for the C-Mn structural steels. This paper will present a comprehensive review of the available published data for fatigue performance of different welded joints for various types of stainless steel. These data will be compared with the equivalent joint classifications in design codes for the welded structural steel joints. As a result some tentative fatigue design guidance will be offered for engineers. As well as considering the S-N type of data, fatigue crack growth and threshold stress intensity factors for various types of stainless steel will also be presented. The latter data will enable engineers to carry out fracture mechanics analysis for the design, fitness-for-purpose and in-service inspection of components.
- OSTI ID:
- 205404
- Report Number(s):
- CONF-950695--; ISBN 0-7918-1309-6
- Country of Publication:
- United States
- Language:
- English
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