Reliability of aged ship structures

Garbatov, Y; Soares, Cláudia

doi:10.1201/9781439832554.ch10

Cited by 3 publications

(9 citation statements)

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“…27 Latter, these data sets were updated and analysed by Garbatov and Guedes Soares. 44 Since this study is concerned with the corrosion under immersion conditions, only the corrosion data of the bottom plating, which include 684 observations and its corresponding fitting, will be considered as shown in Fig.…”

Section: Standard Corrosion Modelmentioning

confidence: 99%

“…The parameters of this model are given values based on the regression analysis of Garbatov and Guedes Soares 27 on corrosion data of the bottom plates of bulk carriers (see Table 1). Since this data sets are collected from several vessels navigating though different environments, the resulting corrosion parameters can be assumed to be corresponding to average long term environmental conditions as estimated in Table 3.…”

Section: Application Examplementioning

confidence: 99%

“…Fourteen sets of corrosion data of structural components of bulk carriers were partially analysed and fitted to this model by Garbatov and Guedes Soares. 27 Latter, these data sets were updated and analysed by Garbatov and Guedes Soares. 44 Since this study is concerned with the corrosion under immersion conditions, only the corrosion data of the bottom plating, which include 684 observations and its corresponding fitting, will be considered as shown in Fig.…”

Section: Standard Corrosion Modelmentioning

confidence: 99%

“…The standard corrosion model was calibrated based on thickness measurements data of steel plates of several crude oil tankers through their service life. 27 The scaling factors were obtained based on regression analysis of corrosion data collected from the literature. The weighting factors are estimated according to the relative duration periods of the different short term intervals encountered during the ship service life.…”

Section: Introductionmentioning

confidence: 99%

“…Garbatov et al 26 and Garbatov and Guedes Soares27 have analysed the corrosion wastage of deck hull structures of bulk carriers, which are mainly subjected to corrosion in atmospheric conditions, and showed that the nonlinear corrosion wastage model was well adapted to represent realistic situations for ship plates in different areas of the ship hull.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Soares

Garbatov

Zayed

2011

Corrosion Engineering, Science and Technology

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102

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This study considers different environmental factors affecting corrosion under marine immersion conditions and proposes a mathematical model incorporating their effects on corrosion degradation through the ship life. The study adopts a nonlinear function of time as the reference corrosion model calibrated with operational corrosion data at long term average conditions to represent the corrosion behaviour under standard environmental conditions. Based on previously obtained field data, a corrosion deterioration model is developed, in which a correction factor is proposed to account for the effect of each environmental factor. These multiplicative factors correct the standard prediction of corrosion degradation to obtain short term estimates under any specific environmental condition. Then, a long term estimate of corrosion degradation is determined by summing the short term corrosion contributions during the various discrete time periods in which the ship life can be decomposed. A numerical example of a representative application of the new empirical based corrosion model is presented, to demonstrate how to apply the model.

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Section: Standard Corrosion Modelmentioning

confidence: 99%

Section: Application Examplementioning

confidence: 99%

Section: Standard Corrosion Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Soares

Garbatov

Zayed

2011

Corrosion Engineering, Science and Technology

Self Cite

102

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Risk based maintenance of deteriorated ship structures

Soares¹,

Pparunov²

2010

Advanced Ship Design for Pollution Prevention

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Multi-Attribute Decision-Making Ship Structural Design

Pereira

Garbatov

2022

JMSE

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This study develops a procedure for performing multi-attribute decision-making ship structural design of a multi-purpose ship. The already designed ship is further structurally designed to comply with the requirements of the Classification Societies. The ship hull and structural components are verified against yielding, buckling, and ultimate strength. Based on the ultimate limit state (ULS), the first order reliability method (FORM) is employed to analyse the structural risk in reducing the probability of failure. The costs associated with materials, manufacturing, and labour are estimated. The structural risk analysis is performed, accounting for different hazard issues related to loss of ship, loss of cargo, loss of human life, and accidental spill of fuel and oil. The risk-based analysis is used to identify an optimum level of ship structural safety, i.e., the optimum reliability index, controlling the risk associated with the ship hull design. The study uses a multiple attribute decision-making ship design approach, simultaneously considering several objectives for different scenarios employing the Technique of Order Preference by Similarity to Ideal Solution (TOPSIS). The identified ship design solution is associated with the minimum expected total cost leading to lower construction and operational costs and risk with maximum cargo capacity and energy efficiency. The developed procedure is flexible enough to accommodate different design criteria and possible hazards during the ship’s service life.

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Reliability of aged ship structures

Cited by 3 publications

References 0 publications

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Risk based maintenance of deteriorated ship structures

Multi-Attribute Decision-Making Ship Structural Design

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