Back to Search
Start Over
Probabilistic strain-fatigue life performance based on stochastic analysis of structural and WAAM-stainless steels
- Source :
- Engineering Failure Analysis, 127
- Publication Year :
- 2021
-
Abstract
- Wire arc additive manufacturing (WAAM) has increasingly attracted attention in the construction sector because of its ability to produce large metallic structural parts in short times. In this paper, Coffin-Manson and Morrow (CMM) equation is employed to compare the fatigue life of WAAM stainless steel with the structural steels S355 and S690. The results showed that the fatigue performance of structural steel is better than the WAAM stainless steel, the fatigue performance vertical to printing direction (WAAM-900) is better than it along the printing direction (WAAM-00). In addition, the fatigue cycle of the transition reversals of structural steel is much less than it of WAAM stainless. With the increasing the fatigue cycle, the maximum density of the strain amplitude ratio is gradually increased to 1.0. The probabilistic parameters of CMM equation were obtained by a stochastic analysis using Latin hypercube sampling strategies. The probabilistic strain-fatigue life behaviour obtained from the constant exponent sampling strategy is higher when compared with the varied exponent sampling strategy for both WAAM stainless and structural steels.
- Subjects :
- Materials science
business.industry
Stochastic process
General Engineering
Probabilistic logic
Sampling (statistics)
020101 civil engineering
Latin hypercube sampling strategy
02 engineering and technology
Structural engineering
Amplitude ratio
0201 civil engineering
Probabilistic fatigue behaviour
020303 mechanical engineering & transports
0203 mechanical engineering
Latin hypercube sampling
Wire arc additive manufacturing (WAAM) stainless steel
Structural steels
Coffin-Manson and Morrow's (CMM) equation
General Materials Science
business
Subjects
Details
- Language :
- English
- ISSN :
- 13506307
- Volume :
- 127
- Database :
- OpenAIRE
- Journal :
- Engineering Failure Analysis
- Accession number :
- edsair.doi.dedup.....c76f3d03ef9c479c7c04011113b1e81e