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RISForecasting High Cycle and Very High Cycle Fatigue Through Enhanced Strain-Energy Based Fatigue Life Prediction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study applies a novel strain-energy based fatigue life prediction method to low cycle fatigue (LCF) data additive manufactured (AM) Inconel 718 round dog-bones, specifically focusing on cycles to failure less than ...
Strain Rate and Loading Waveform Effects on an Energy Based Fatigue Life Prediction for AL6061 T6
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The energybased lifing method is based on the theory that the cumulative energy in all hysteresis loops of a specimens' lifetime is equal to the energy in a monotonic tension test. Based on this theory, fatigue life can ...
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 ...
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 ...
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 ...
Stochastic Fatigue Life Prediction Based on a Reduced Data Set
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aim of this paper is to provide a novel stochastic life prediction approach capable of predicting the total fatigue life of applied uniaxial stress states from a reduced dataset reliably and efficiently. A previously ...