Optimal inspection planning and repair under random crack propagation

Autor(es)

Gomes, Wellison J. S. ^[1] ; Beck, Andre T. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Santa Catarina, Dept Civil Engn, Florianopolis, SC - Brazil

^[2] Univ Sao Paulo, Dept Struct Engn, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENGINEERING STRUCTURES; v. 69, p. 285-296, JUN 15 2014.
• Citações Web of Science: 9

Resumo

Operation of damage-tolerant structures or components subject to random crack propagation requires constant monitoring by non-destructive inspections and systematic maintenance actions. Optimization of inspection schedules and repair strategies is a compromise between costs of inspections and repairs, and expected costs of failure. This paper advances the state of the art by: considering accurate polynomial chaos model of the random crack propagation process; considering number of inspections and crack repair size as design variables and; by performing sensitivity analysis of optimal inspection schedules and repair strategies with respect to the assumed costs of inspection and failure, as well as to the level of loading. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/17365-6 - Otimização de risco sob processos aleatórios de corrosão e fadiga
• Beneficiário: Wellison José de Santana Gomes
• Modalidade de apoio: Bolsas no Brasil - Doutorado