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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Autoregressive model extrapolation using cubic splines for damage progression analysis

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Yano, Marcus Omori [1] ; Villani, Luis G. G. [2] ; da Silva, Samuel [1] ; Figueiredo, Eloi [3, 4]
Total Authors: 4
[1] Univ Estadual Paulista, UNESP, Fac Engn, Dept Engn Mecan, Paulista, SP - Brazil
[2] UFES Univ Fed Espirito Santo, Ctr Technol, Dept Engn Mecan, Vitoria, ES - Brazil
[3] Lusofona Univ, Fac Engn, Lisbon - Portugal
[4] Univ Porto, Fac Engn, Construct, Porto - Portugal
Total Affiliations: 4
Document type: Journal article
Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 43, n. 1 JAN 2 2021.
Web of Science Citations: 0

The application of Structural Health Monitoring (SHM) methods focuses mainly on its initial levels of the hierarchy of damage identification. The contribution of this paper is to propose a new strategy that allows going further, predicting the progression of the damage indices through the extrapolation of Autoregressive (AR) models with one-step-ahead prediction estimated at early-stage damage conditions using piecewise cubic splines. A trending curve capable of predicting the damage progression can be determined, and it allows the extrapolation to future structural conditions based on some assumptions. The data sets of a benchmark involving a three-story building structure are investigated to illustrate the proposed methodology. The extrapolated coefficients in the most severe condition are implemented to identify an extrapolated AR model, and the results are encouraging by adequately reproducing the structure's future behavior if the damage is initially detected and not repaired immediately. (AU)

FAPESP's process: 15/25676-2 - Robust damage detection in uncertain nonlinear systems
Grantee:Luis Gustavo Giacon Villani
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/15512-8 - Applications of model identification of guided wave propagation in composite structures for damage prognosis
Grantee:Samuel da Silva
Support Opportunities: Scholarships abroad - Research
FAPESP's process: 19/19684-3 - Nonlinear structural health monitoring of structures assembled by bolted joints
Grantee:Samuel da Silva
Support Opportunities: Regular Research Grants