On damage detection system information for structural systems

Research output: Contribution to journalArticle

Abstract

Damage detection systems (DDSs) provide information on the integrity of structural systems in contrast to local information from inspections or non-destructive testing (NDT) techniques. In this paper, an approach is developed that utilizes DDS information to update structural system reliability and integrate this information into risk and decision analyses. The approach includes a novel performance modelling of DDSs accounting for the structural and measurement system characteristics, the damage detection algorithm (DDA) precision including type I and II errors. This DDS performance modelling provides the basis for DDS comparison and assessment in conjunction with the structural system performance including the damage and failure state dependencies. For updating of the structural system reliability, an approach is developed based on Bayesian updating facilitating the use of DDS information on structural system level and thus for a structural system risk analysis. The structural system risk analysis encompasses the static, dynamic, deterioration, reliability and consequence models, which provide the basis for calculating the direct risks due to component failure and the indirect risks due to system failure. Two case studies with the developed approach demonstrate a potential risk reduction and a high Value of DDS Information.

Details

Authors
External organisations
  • Technical University of Denmark
  • Federal Institute for Material Research and Testing (BAM) Germany
  • National Institute for Research in Computer Science and Control (INIRA)
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Reliability and Maintenance

Keywords

  • Damage detection, Damage detection uncertainty modelling, Structural system updating, Structural systems, Value of information
Original languageEnglish
Pages (from-to)255-268
Number of pages14
JournalStructural Engineering International
Volume28
Issue number3
Publication statusPublished - 2018 Jan 1
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes