Time intervals for maintenance of offshore structures based on multiobjective optimization
type: Item
instance of: scholarly article
title: Time intervals for maintenance of offshore structures based on multiobjective optimization
zbMATH Open document ID: 1296.90078
DOI: 10.1155/2013/125856
author: Dante Tolentino
author: Sonia E. Ruiz
published in: Mathematical Problems in Engineering
publication date: 2014-10-13T00:00:00Z
review text: Summary: With the aim of establishing adequate time intervals for maintenance of offshore structures, an approach based on multiobjective optimization for making decisions is proposed. The formulation takes into account the degradation of the mechanical properties of the structures and its influence over time on both the structural capacity and the structural demand, given a maximum wave height. The set of time intervals for maintenance corresponds to a balance between three objectives: (a) structural reliability, (b) damage index, and (c) expected cumulative total cost. Structural reliability is expressed in terms of confidence factors as functions of time by means of closed-form mathematical expressions which consider structural deterioration. The multiobjective optimization is solved using an evolutionary genetic algorithm. The approach is applied to an offshore platform located at Campeche Bay in the Gulf of Mexico. The optimization criterion includes the reconstruction of the platform. Results indicate that if the first maintenance action is made in 5 years after installing the structure, the second repair action should be made in the following 7 to 10 years; however, if the first maintenance action is made in 6 years after installing the structure, then the second should be made in the following 5 to 8 years.
Mathematics Subject Classification ID: 90B90
Mathematics Subject Classification ID: 90B25
Mathematics Subject Classification ID: 90C29
zbMATH DE Number: 6354394
Wikidata QID: Q59022673
describes a project that uses: Optimization Toolbox
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2013/125856
OpenAlex ID: W2072440985
cites work: Q4692508
cites work: Multi-objective optimization using evolutionary algorithms
cites work: Q4003169
cites work: Q5848415
description: scientific article; zbMATH DE number 6354394