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RISNew Feature Extraction Method for the Detection of Defects in Rolling Element Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes a new method based on ensemble empirical mode decomposition (EEMD) and kurtosis criterion for the detection of defects in rolling element bearings. Some intrinsic mode functions ...
Postearthquake Vertical Load-Carrying Capacity of Extended Pile Shafts in Cohesionless Soils: Quasi-Static Test and Parametric Studies
Publisher: ASCE
Abstract: The belowground portion of extended pile-shaft-supported bridges is usually prone to earthquake-induced damage during earthquake shakings. The unobservable pile damage below the ground surface makes it difficult and ...
Ductile Behavior of Scoured RC Pile-Group Foundations for Bridges in Cohesionless Soils: Parametric Incremental Dynamic Analysis
Publisher: ASCE
Abstract: Scoured pile-group foundations (SPGFs) are susceptible to inelastic deformation during earthquakes. Hence, the ductile behavior of SPGFs has become a rising concern in academic and industrial communities. Traditionally, ...
On Improving 4-km Mesoscale Model Simulations
Publisher: American Meteorological Society
Abstract: A previous study showed that use of analysis-nudging four-dimensional data assimilation (FDDA) and improved physics in the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale ...
Development of a Land Surface Model. Part I: Application in a Mesoscale Meteorological Model
Publisher: American Meteorological Society
Abstract: Parameterization of land surface processes and consideration of surface inhomogeneities are very important to mesoscale meteorological modeling applications, especially those that provide information for air quality modeling. ...
Development and Testing of a Surface Flux and Planetary Boundary Layer Model for Application in Mesoscale Models
Publisher: American Meteorological Society
Abstract: Although the development of soil, vegetation, and atmosphere interaction models has been driven primarily by the need for accurate simulations of long-term energy and moisture budgets in global climate models, the importance ...
Development of a Land Surface Model. Part II: Data Assimilation
Publisher: American Meteorological Society
Abstract: Part I described a land surface model, its implementation in the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5), and some model evaluation results. Part II ...
Seismic Behavior of Pile-Group-Supported Bridges in Liquefiable Soils with Crusts Subjected to Potential Scour: Insights from Shake-Table Tests
Publisher: ASCE
Abstract: One-g shake-table tests were conducted to characterize seismic demands and reveal failure mechanisms of pile-supported bridges in liquefiable soils with crusts subjected to different scour scenarios, namely no scour, partial ...
Selection of Input Motion for Seismic Analysis of Scoured Pile-Supported Bridge with Simplified Models
Publisher: American Society of Civil Engineers
Abstract: Potential scouring scenarios around the foundations of bridges that pass over water could have adverse effects on the seismic response of both the site and the structures. In this study, a two-step methodology is proposed ...
Pile Group Effect Modeling and Parametric Sensitivity Analysis of Scoured Pile Group Bridge Foundations in Sandy Soils under Lateral Loads
Publisher: ASCE
Abstract: Scour can increase the earthquake-induced damage in pile group foundations. Quantifying the parameter sensitivity of the seismic performance for scoured pile group foundations is essential for the optimal design and retrofit ...