Search
CSV
RISComparison of Performance Losses Between Ultrasonic and Thermal Bonding of Membrane Electrode Assemblies in Proton Exchange Membrane Fuel Cells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ultrasonic bonding of lowtemperature PEM membrane electrode assembly (MEA) components together has been shown previously to cut both cycle time and energy input of that manufacturing step by over an order of magnitude as ...
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 ...
Fatigue and Strength Studies of Titanium 6Al–4V Fabricated by Direct Metal Laser Sintering
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibratory bending fatigue behavior of titanium 6Al–4V plate specimens manufactured via direct metal laser sintering (DMLS), powder bed fusion additive manufacturing (AM), is assessed. Motivation for the work is based on ...
Harmonic Convergence Estimation Through Strain Energy Superconvergence
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Grid convergence in finite element analysis (FEA), despite a wide variety of tools available to date, remains an elusive and challenging task. Due to the complex and timeconsuming process of remeshing and solving the finite ...
Surrogate Modeling of Manufacturing Variation Effects on Unsteady Interactions in a Transonic Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This effort develops a surrogate modeling approach for predicting the effects of manufacturing variations on performance and unsteady loading of a transonic turbine. Computational fluid dynamics (CFD) results from a set ...
Integrally Bladed Rotor Modal Identification Under Traveling Wave Excitation With High Density Measurement Points
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibration testing of an integrally bladed rotor (IBR) is often completed through traveling wave excitation (TWE) bench tests composed of multiple, simultaneously excited inputs. Often, each blade has many output locations. ...
Forced Response Variation of a Compressor Utilizing Blade Tip Timing, Strain Gages, and As-Manufactured Finite Element Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic response of turbine engine components varies widely due to manufacturing deviations in the blades known as mistuning. This dynamic variation is investigated using a single-stage compressor experimentally using ...
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 ...