Current practices and recent advances in condition assessment of aged ships

Rizzo, Cesare Mario; Paik, Jeom Kee; Carlsen, C A; Daley, Claude; Garbatov, Y.; Ivanov, Lyuben D.; Simonsen, Bo Cerup; Yamamoto, Norio; Zhuang, Hanqi

doi:10.1080/17445300701423486

Cited by 24 publications

(9 citation statements)

References 52 publications

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“…A review of the structural conditions in view of the serviceability and safety, methods for repair, quantification of strength of deteriorated and repaired ships (as well as criteria for acceptable damage), accounting for the uncertainties involved has been presented by Paik et al (2006) and Rizzo et al (2007) where a special attention has been given to cost-benefit and risk-based decision procedures for remedial actions. Nakai et al (2004) have studied the effect of pitting corrosion on the local strength of hold frames.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical strength assessment of stiffened plates subjected to severe non-uniform corrosion degradation and compressive load

Garbatov

Tekgoz

Soares

2016

Ships and Offshore Structures

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The objective of this work is to investigate experimentally and numerically the severe non-uniform corrosion degradation effect on the load carrying capacity of stiffened plates. Eight stiffened plates, which are initially corroded in real open sea conditions with different corrosion degradation levels, have been tested under compressive load. Different factors leading to a reduction of structural capacity have been investigated, including the material properties, degree of degradation, equivalent thickness and testing support conditions. The experimental results also showed to be very close to those estimated by the existing guideline procedure for a numerical evaluation of the ultimate strength, adjusted to be used for the severe corroded stiffened plates.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical strength assessment of stiffened plates subjected to severe non-uniform corrosion degradation and compressive load

Garbatov

Tekgoz

Soares

2016

Ships and Offshore Structures

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“…And last but not least, the in-service stresses and the above mentioned weld-induced residual stresses may have a significant influence on the surface chemical state [5]. General practices in assessing the corrosion condition in aged marine structures can be found in Ref [38].…”

Section: Introductionmentioning

confidence: 99%

Mechano-electrochemical modelling of corroded steel structures

Wang

Wharton

Shenoi

2016

Engineering Structures

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A numerical methodology is established to study the mechanoelectrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage. ABSTRACTA numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechanoelectrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the mechano-chemical corrosion damage.

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“…In the absence of historical maintenance records of PME, this results into high maintenance costs and low levels of reliability that pose as a risk (Rizzo et al , 2007; Wang et al , 2009). These two papers serve as a benchmark for the maintenance crew to devise remedial action(s) and strategy(s) for system defects, failures and damages.…”

Section: Marine Maintenance Parametersmentioning

confidence: 99%

Maintenance practices and parameters for marine mechanical systems: a review

Kimera

Nangolo

2019

JQME

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Purpose The purpose of this paper is to review maintenance practices, tools and parameters for marine mechanical systems that can be classified as plant, machinery and equipment (PME). It provides an insight for the maintenance crew on which maintenance parameters and practices are critical for a given PME systems. Design/methodology/approach The review paper characterizes the various maintenance parameters and maintenance practices used onshore and offshore for PME and identifies the possible gaps. Findings A variety of maintenance techniques are being used in the marine industry such as corrective maintenance, preventive maintenance and condition-based maintenance. As marine vehicles (MV) get older, the most important maintenance parameters become maintenance costs, reliability and safety. Maintenance models that have been developed in line with marine mechanical systems have been validated using a single system, whose outcome could be different if another PME system is used for validation. Research limitations/implications There is a limited literature on MV maintenance parameters and maintenance characterization regarding mechanical systems. The maintenance practices or strategies of marine mechanical systems should be based on maintenance parameters that suit the marine industry for a given PME. Originality/value Based on the available literature, the paper provides a variety of maintenance framework, parameters and practices for marine mechanical systems. The paper further gives an insight on what maintenance parameters, strategies and platforms are given preference in the shipping industry.

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Current practices and recent advances in condition assessment of aged ships

Cited by 24 publications

References 52 publications

Experimental and numerical strength assessment of stiffened plates subjected to severe non-uniform corrosion degradation and compressive load

Experimental and numerical strength assessment of stiffened plates subjected to severe non-uniform corrosion degradation and compressive load

Mechano-electrochemical modelling of corroded steel structures

Maintenance practices and parameters for marine mechanical systems: a review

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