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Full-Text Articles in Engineering
Robustness And Accuracy Bounds Of Model-Based Structural Health Monitoring, Nestor Ramon Polanco
Robustness And Accuracy Bounds Of Model-Based Structural Health Monitoring, Nestor Ramon Polanco
Graduate College Dissertations and Theses
The strength and stiffness of structures degrade with time due to a combination of external forces and environmental conditions. A vehicular bridge, an offshore platform, a ship hull, or a wind turbine are examples of structures that for decades must endure cumulative degradation of their mechanical properties due to cyclic loading. Fatigue-induced damage typically starts at the exterior surface of the component unless microscopic or macroscopic imperfections are present in the material's structure. Structural Health Monitoring (SHM) provides a scientific non-destructive framework to estimate the structure's current state and remaining service life. In many model-based structural health monitoring applications, the …
Bayesian Filtering In Nonlinear Structural Systems With Application To Structural Health Monitoring, Kalil Erazo
Bayesian Filtering In Nonlinear Structural Systems With Application To Structural Health Monitoring, Kalil Erazo
Graduate College Dissertations and Theses
During strong earthquakes structural systems exhibit nonlinear behavior due to low-cycle fatigue, cracking, yielding and/or fracture of constituent elements. After a seismic event it is essential to assess the state of damage of structures and determine if they can safely resist aftershocks or future strong motions. The current practice in post-earthquake damage assessment relies mainly on visual inspections and local testing. These approaches are limited to the ability of inspectors to reach all potentially damaged locations, and are typically intended to detect damage near the outer surfaces of the structure leaving the possibility of hidden undetected damage. Some structures in …