12/25/2023 0 Comments Probabilistic risk![]() ![]() The risk-based framework is demonstrated on a realistic truss-like structure and supported by experimental data. Optimal courses of action for structures are selected by determining the strategies that maximise expected utility. The fault trees allow for information to pass from probabilistic classifiers to influence diagram representations of decision processes whilst also providing nodes within the graphical model that may be queried to obtain marginal probability distributions over local damage states within a structure. The framework involves modelling failure modes of structures as Bayesian network representations of fault trees and then assigning costs or utilities to the failure events. As an apt tool for reasoning and decision-making under uncertainty, probabilistic graphical models serve as the foundation of the framework. The current paper aims to formulate a risk-based decision framework for structural health monitoring that combines elements of PRA with the existing SHM paradigm. Probabilistic risk assessment (PRA) is an established methodology that allows engineers to make risk-informed decisions regarding the design and operation of safety-critical and high-value assets in industries such as nuclear and aerospace. Hughes and 3 other authors Download PDF Abstract:Obtaining the ability to make informed decisions regarding the operation and maintenance of structures, provides a major incentive for the implementation of structural health monitoring (SHM) systems. Download a PDF of the paper titled A probabilistic risk-based decision framework for structural health monitoring, by Aidan J. ![]()
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