TY - CHAP
T1 - Unsupervised Data-Driven Methods for Damage Identification in Discontinuous Media
AU - Napolitano, Rebecca
AU - Reinhart, Wesley
AU - Glisic, Branko
N1 - Funding Information:
Acknowledgements This paper is based on work in part supported by the National Science Foundation Graduate Research Fellowship Program under Grant no. DGE-1656466. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the view of the National Science Foundation. Additional support was provided by the Dean’s Fund for Innovation at Princeton and the Department of Civil and Environmental Engineering. The present research was completed as part of the Itasca Educational Partnership under the mentorship of Dr. Jim Hazzard.
Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2022
Y1 - 2022
N2 - Before investing in long-term monitoring or reinforcement of structures, it is essential to understand underlying damage mechanisms and consequences for structural stability. Approaches combining nondestructive evaluation and finite element modeling have been successful in producing qualitative diagnoses for damage to existing structures. However, the real-world impact of such methods will hinge upon a reduced computational burden and improved accuracy of comparison between models and physical infrastructure. This chapter describes a new approach based on unsupervised learning to perform quantitative damage state inversion from sparse datasets. Discrete element modeling was used to simulate the response of masonry walls and other structures under settlement loading. Point cloud representations of the structures, consistent with modern computer vision pipelines used for documentation, were used to generate a low-dimensional manifold based on the Wasserstein metric. This manifold is used to train a Gaussian process model which can then be interrogated to infer loading conditions from the damage state. This method is shown to quantitatively reproduce the loading conditions for masonry structures and was validated against laboratory-scale, experimental masonry walls. Although the approach is demonstrated here for settlement-induced cracking, it has important implications for the broader field of data-driven diagnostics for discontinuous media.
AB - Before investing in long-term monitoring or reinforcement of structures, it is essential to understand underlying damage mechanisms and consequences for structural stability. Approaches combining nondestructive evaluation and finite element modeling have been successful in producing qualitative diagnoses for damage to existing structures. However, the real-world impact of such methods will hinge upon a reduced computational burden and improved accuracy of comparison between models and physical infrastructure. This chapter describes a new approach based on unsupervised learning to perform quantitative damage state inversion from sparse datasets. Discrete element modeling was used to simulate the response of masonry walls and other structures under settlement loading. Point cloud representations of the structures, consistent with modern computer vision pipelines used for documentation, were used to generate a low-dimensional manifold based on the Wasserstein metric. This manifold is used to train a Gaussian process model which can then be interrogated to infer loading conditions from the damage state. This method is shown to quantitatively reproduce the loading conditions for masonry structures and was validated against laboratory-scale, experimental masonry walls. Although the approach is demonstrated here for settlement-induced cracking, it has important implications for the broader field of data-driven diagnostics for discontinuous media.
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U2 - 10.1007/978-3-030-81716-9_10
DO - 10.1007/978-3-030-81716-9_10
M3 - Chapter
AN - SCOPUS:85117948479
T3 - Structural Integrity
SP - 207
EP - 226
BT - Structural Integrity
PB - Springer Science and Business Media Deutschland GmbH
ER -