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RISProcess 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 ...
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 ...
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 ...
Active Subspace Development of Integrally Bladed Disk Dynamic Properties Due to Manufacturing Variations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The impact of geometry variations on integrally bladed disk eigenvalues is investigated. A large population of industrial bladed disks (blisks) are scanned via a structured light optical scanner to provide as-measured ...
Gaussian Stochastic Process Modeling of Blend Repaired Airfoil Modal Response Using Reduced Basis Mode Shape Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A machine learning (ML) approach is developed to predict the effect of blend repairs on airfoil frequency, modal assurance criterion (MAC), and modal displacement vectors. The method is demonstrated on a transonic research ...
Numerical Methods for Calculating Component Modes for Geometric Mistuning Reduced-Order Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Geometric mistuning models formulated from component mode synthesis methods often require the calculation of component modes, particularly constraint and fixed interface normal modes (FINMs), during substructuring. For ...