On the value of SHM in the context of service life integrity management

Jianjun Qin, Sebastian Thöns, Michael Havbro Faber

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Abstract

This paper addresses the optimization of structural health monitoring(SHM) before its implementation on the basis of its Value of Information (VoI). The approach for the quantification of the value of SHM builds upon a service life cost assessment and generic structural performance model in conjunction with the observation, i.e. monitoring, of deterioration increments. The structural
performance is described with a generic deterioration model to be calibrated to the relevant structural deterioration mechanism, such as e.g. fatigue and corrosion. The generic deterioration model allows for the incorporation of monitored damage increments and accounts for the precision of the data by considering the statistical uncertainties, i.e. the amount of monitoring data due to the monitoring period, and by considering the measurement uncertainty. The value of structural health monitoring is then quantified in the framework of the Bayesian pre-posterior decision theory as the difference between the expected service-life costs considering an optimal structural integrity management and the service life costs utilizing an optimal SHM system and structural integrity management. With an example the application of the approach is shown and the value of the monitoring period optimized SHM information is determined.
Original languageEnglish
Title of host publicationProceedings of the 12th International Conference on Applications of Statistics and Probability in Civil Engineering
Publication date2015
Pages8
Publication statusPublished - 2015
Event12th International Conference on Applications of Statistics and Probability in Civil Engineering - Vancouver, Canada
Duration: 12 Jul 201515 Jul 2015
Conference number: 12

Conference

Conference12th International Conference on Applications of Statistics and Probability in Civil Engineering
Number12
CountryCanada
CityVancouver
Period12/07/201515/07/2015

Cite this

Qin, J., Thöns, S., & Faber, M. H. (2015). On the value of SHM in the context of service life integrity management. In Proceedings of the 12th International Conference on Applications of Statistics and Probability in Civil Engineering (pp. 8)