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RISNumerical Weather Prediction in New Zealand
Publisher: American Meteorological Society
Abstract: The main problem in weather forecasting over New Zealand and the Southern Oceans is the lack of sufficient data for good analyses, especially at upper levels. Numerical weather prediction also suffers from this problem, ...
Process Flow for Integrally Bladed Rotor Mistuning Identification During Depot Inspections Using Geometric Mistuning Approaches
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. Integrally Bladed Rotors (IBRs) are subject to foreign object damage, wear and tear, and repair processes that may mistune the system through nonuniform geometric perturbations during usage. This mistuning can ...
Approach-Span Failure of the Hoan Bridge as a Case Study for Engineering Students and Practicing Engineers
Publisher: American Society of Civil Engineers
Abstract: On the morning of December 13, 2000, all three steel girders in a three-girder approach span of the Hoan Bridge in Milwaukee, Wisconsin, fractured. Two of the three girders had a fracture propagate completely through the ...
Uncertainties of an Automated Optical 3D Geometry Measurement, Modeling, and Analysis Process for Mistuned Integrally Bladed Rotor Reverse Engineering
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An automated reverse engineering process is developed that uses a structured light optical measurement system to collect dense point cloud geometry representations. The modeling process is automated through integration of ...
Uncertainty in Common NDE Techniques for Use in Risk-Based Bridge Inspection Planning: Existing Data
Publisher: American Society of Civil Engineers
Abstract: In 2009, a joint American Society of Civil Engineers Structural Engineering Institute and American Association of State Highway and Transportation Officials ad hoc group was created to study how current bridge practices ...
Effect of Transverse Shear Deformation on Elastic Moduli of Thin Ice Plates
Publisher: American Society of Civil Engineers
Abstract: The elastic deformation of thin ice sheets due to bending and shear deformation is considered. The in-plane Young's modulus and the transverse shear modulus are calculated by least-squares fit of transverse plate deflection ...
Optimization of Airfoil Blend Limits With As-Manufactured Geometry Finite Element Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Conventional airfoil blend repair limits are established using nominal, design intent geometry. This convention does not explicitly consider the inherent blade-to-blade structural response variation associated with geometric ...
Modal Identification for Integrally Bladed Rotors Under Traveling Wave Excitation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The safety of a fielded integrally bladed rotor (IBR) is often assessed through vibration testing. Responses due to various types of excitation are measured and processed and can be inputs to follow-on analyses, such as ...
Geometric Mistuning Reduced Order Models for Integrally Bladed Rotors With Mistuned Disk–Blade Boundaries
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: New geometric mistuning modeling approaches for integrally bladed rotors (IBRs) are developed for incorporating geometric perturbations to a fundamental disk–blade sector, particularly the disk–blade boundary or ...
The Effect of Manufacturing Variations on Unsteady Interaction in a Transonic Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This effort focuses on the comparison of unsteadiness due to as-measured turbine blades in a transonic turbine to that obtained with blueprint geometries via computational fluid dynamics (CFD). A Reynolds-averaged Navier–Stokes ...