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RISResonant Ultrasound Spectroscopy: Sensitivity Analysis for Isotropic Materials and Anisotropic Materials With Cubic Symmetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Resonant ultrasound spectroscopy (RUS) is an experimental method to measure elastic and anelastic properties of materials. The RUS experiment is conducted by exciting a specimen with a simple geometry and measuring resonant ...
Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Anisotropic Materials With Hexagonal Symmetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Resonance ultrasound spectroscopy (RUS) is a nondestructive technique for evaluating elastic and an-elastic material properties. The frequencies of free vibrations for a carefully crafted sample are measured, and material ...
Analyses of Damping Sustainability of Additively Manufactured Nickel Alloy Components Subjected to High Strain Loading Cycles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: While integrally bladed rotors in turbine engines have multiple benefits, they are more susceptible to vibration and as a result, high cycle fatigue failure. In response, damping treatments such as viscoelastic layers, ...
Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The push for low cost and higher performance/efficient turbine engines has introduced a demand for novel technologies to improve robustness to vibrations resulting in high cycle fatigue (HCF). There have been many proposed ...
Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Criteria for assessing high cycle fatigue (HCF) capability are important for transitioning additive repair technologies to turbine engines. By studying the fatigue results of two additive repair technologies on Titanium ...
Shape Optimization of Rectangular Plates for Vibration-Based Fatigue Testing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In vibration-based high cycle fatigue testing, a base-excited plate is driven at a high frequency resonant mode until failure. In one vibration-based method involving a cantilevered square plate, a mode often referred to ...
Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The fatigue life behavior and internal surface conditions of inherently damped additive manufactured (AM) specimens subjected to vibration bending are under investigation. This study supports research that demonstrated 95% ...
Investigation of Self-Heating During Ultrasonic Fatigue Testing and Effect on Very High Cycle Fatigue Behavior of Titanium 6Al-4V
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Very high cycle fatigue (VHCF) data and experiments, 107–109 cycles to failure, have traditionally been both a cumbersome and costly task to perform. However, characterizing VHCF behavior of material systems is critical ...
Fused Deposition Modeling Fabrication Evaluation of a Ti-6Al-4V Centrifugal Compressor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Centrifugal compressors have a critical impact on the performance of a jet engine and can be made out of aluminum, steel, or titanium alloy. However, if made out of Ti-6Al-4V, it would be more lightweight than if steel ...
Assessing Additive Manufacturing Repeatability of Inherently Damped Nickel Alloy Components
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The repeatability of an additive manufacturing (AM) process that fabricates a unique specimen with inherent damping capability is explored. A laser powder bed fusion (LPBF) technique is used to additively manufacture nickel ...