Details
| Original language | English |
|---|---|
| Pages (from-to) | 425-432 |
| Number of pages | 8 |
| Journal | Structural safety |
| Volume | 32 |
| Issue number | 6 |
| Early online date | 18 May 2010 |
| Publication status | Published - Nov 2010 |
| Externally published | Yes |
Abstract
Reliability analysis of existing offshore structures in seawater conditions requires realistic models for corrosion. In this paper, a probabilistic model for marine corrosion is adopted. Due to scarce and imprecise information, the model parameters cannot be specified precisely and are merely known in form of bounds. To deal with this issue, selected uncertainty models are applied, and their features are compared. The investigation includes pure probabilistics, interval modeling, fuzzy methods, and imprecise probabilities. The models are applied to find an upper bound for the failure probability. The results are compared in view of information content and numerical efficiency. For the comparative study a simple plate structure is used, for which reference results are available. Then, the investigation is extended to a fixed offshore platform.
Keywords
- Imprecise probabilities, Interval & fuzzy methods, Marine corrosion, Offshore structures, Reliability analysis, Uncertainty quantification
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Safety, Risk, Reliability and Quality
Sustainable Development Goals
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In: Structural safety, Vol. 32, No. 6, 11.2010, p. 425-432.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of uncertainty models in reliability analysis of offshore structures under marine corrosion
AU - Zhang, M. Q.
AU - Beer, M.
AU - Quek, S. T.
AU - Choo, Y. S.
N1 - Funding Information: The authors gratefully acknowledge the financial support by National University of Singapore through the Ministry of Education Academic Research Fund , Grant No. R264000234133 .
PY - 2010/11
Y1 - 2010/11
N2 - Reliability analysis of existing offshore structures in seawater conditions requires realistic models for corrosion. In this paper, a probabilistic model for marine corrosion is adopted. Due to scarce and imprecise information, the model parameters cannot be specified precisely and are merely known in form of bounds. To deal with this issue, selected uncertainty models are applied, and their features are compared. The investigation includes pure probabilistics, interval modeling, fuzzy methods, and imprecise probabilities. The models are applied to find an upper bound for the failure probability. The results are compared in view of information content and numerical efficiency. For the comparative study a simple plate structure is used, for which reference results are available. Then, the investigation is extended to a fixed offshore platform.
AB - Reliability analysis of existing offshore structures in seawater conditions requires realistic models for corrosion. In this paper, a probabilistic model for marine corrosion is adopted. Due to scarce and imprecise information, the model parameters cannot be specified precisely and are merely known in form of bounds. To deal with this issue, selected uncertainty models are applied, and their features are compared. The investigation includes pure probabilistics, interval modeling, fuzzy methods, and imprecise probabilities. The models are applied to find an upper bound for the failure probability. The results are compared in view of information content and numerical efficiency. For the comparative study a simple plate structure is used, for which reference results are available. Then, the investigation is extended to a fixed offshore platform.
KW - Imprecise probabilities
KW - Interval & fuzzy methods
KW - Marine corrosion
KW - Offshore structures
KW - Reliability analysis
KW - Uncertainty quantification
UR - http://www.scopus.com/inward/record.url?scp=77957368494&partnerID=8YFLogxK
U2 - 10.1016/j.strusafe.2010.04.003
DO - 10.1016/j.strusafe.2010.04.003
M3 - Article
AN - SCOPUS:77957368494
VL - 32
SP - 425
EP - 432
JO - Structural safety
JF - Structural safety
SN - 0167-4730
IS - 6
ER -