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Título del libro: Safety, Reliability, Risk And Life-Cycle Performance Of Structures And Infrastructures - Proceedings Of The 11th International Conference On Structural Safety And Reliability, Icossar 2013
Título del capítulo: Multi-objective optimization for maintenance of structures, considering structural deterioration

Autores UNAM:
SONIA ELDA RUIZ GOMEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2013
Palabras clave:

Confidence factors; Degradation of mechanical properties; Mathematical expressions; Multi objective; Optimal decisions; Structural capacities; Structural deterioration; Structural reliability; Costs; Damage detection; Deterioration; Functions; Mechanical properties; Multiobjective optimization; Repair; Safety engineering; Structural analysis; Reliability


Resumen:

A multi-objective criterion for making optimal decisions when evaluating ageing structures, taking into account the degradation of mechanical properties and its influence over time on the structural capacity and on the structural demand for a given intensity, is proposed. 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. Reliability is expressed in terms of the confidence factors as functions of time by means of closed-form mathematical expressions which consider structural deterioration. Damage index is represented by the ratio between the structural capacity and the structural demand. Expected cumulative total cost considers costs of inspection, repair and failure over the time interval. The multi-objective criterion is applied to an offshore "jacket" platform located at Campeche Bay in the Gulf of Mexico. © 2013 Taylor & Francis Group, London.


Entidades citadas de la UNAM: