Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
510311 | Computers & Structures | 2011 | 10 Pages |
Abstract
Estimating damage in structural systems is a challenging problem due to the complexity of the likelihood function describing the observed data. From a Bayesian perspective a complicated likelihood means efficient sampling of the posterior distribution is difficult and standard Markov Chain Monte Carlo samplers may no longer be sufficient. This work describes a population-based Markov Chain Monte Carlo approach for efficient sampling of the damage parameter posterior distributions. The approach is shown to accurately estimate the state of damage in a cracked plate structure using simulated, free-decay response data. The use of this approach in identifying structural damage has not previously been explored.
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Authors
J.M. Nichols, E.Z. Moore, K.D. Murphy,