Risk-Based Inspection Planning of Deteriorating Structures
Sponsor
The authors are grateful for the financial support received from: (a) the U.S. National Science Foundation Grant CMMI-1537926, (b) the Office of Naval Research (ONR) Awards N00014-08-1-0188, N00014-12-0023, N00014-16-1-2299, (c) the U.S. Department of Transportation Region 3 University Transportation Center (Grant CIAM-UTC-REG6), and (d) the Pennsylvania Infrastructure Technology Alliance (PITA). The opinions and conclusions presented in this paper are those of the authors and do not necessarily reflect the views of the sponsoring organizations.
Published In
Structure and Infrastructure Engineering
Document Type
Citation
Publication Date
3-23-2021
Abstract
Structural deterioration due to environmental and mechanical stressors is a major concern for civil and marine structures. Inspection actions can reduce uncertainties, facilitate decision-making on maintenance, and in general assist life-cycle management. Risk-based inspection (RBI) planning is a useful tool to minimize life-cycle cost while preserving safety margin of structures. This paper compares (a) static RBI (SRBI) planning where inspection schedule and maintenance criteria are time- and evidence-invariant and (b) adaptive RBI (ARBI) planning where decisions on inspection and maintenance (I&M) are made sequentially and reactively to I&M actions. Specifically, three RBI planning methods, i.e., SRBI with Monte Carlo simulation, ARBI based on Bayesian networks, and ARBI based on partially observable Markov decision processes (POMDP), are compared based on a generic Markovian deterioration model (MDM). In addition, it is demonstrated that ARBI planning can be extended from MDMs to many physics-based deterioration models such as corrosion and fatigue models. The advantages and disadvantages of different RBI planning methods are summarized. Potentials of ARBI planning are also discussed.
Rights
Copyright © 2021 Informa UK Limited
Locate the Document
DOI
10.1080/15732479.2021.1907600
Persistent Identifier
https://archives.pdx.edu/ds/psu/35625
Citation Details
Yang, D. Y., & Frangopol, D. M. (2021). Risk-based inspection planning of deteriorating structures. Structure and Infrastructure Engineering, 1–20. https://doi.org/10.1080/15732479.2021.1907600