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Low-Cycle Fatigue Life of Continuously Cyclic-Hardening Material
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A general fatigue life equation is derived by modifying the Tanaka-Mura-Wu dislocation pile-up model for variable strain-amplitude fatigue processes, where the fatigue crack nucleation life is expressed in terms of the ...
A Mechanism Based Approach From Low Cycle Fatigue to Thermomechanical Fatigue Life Prediction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Deformation and damage accumulation occur by fundamental dislocation and diffusion mechanisms. An integrated creep–fatigue theory (ICFT) has been developed, based on the physical strain decomposition rule that recognizes ...
Numerical Calculation of Additional Moments Due to Weight for High Uniform Columns
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: On the basis of analyzing all the forces on the self-supported uniform high column, the superposition method in mechanics of materials and a MATLAB program were used to calculate the additional ...
A Method to Determine the Geometry-Dependent Bending Stiffness of Multilayer Graphene Sheets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We consider how the bending stiffness of a multilayer graphene sheet relies on its bending geometry, including the in-plane length L and the curvature κ. We use an interlayer shear model to characterize the periodic ...
Bending Stiffness of Circular Multilayer van der Waals Material Sheets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We study the bending stiffness of symmetrically bent circular multilayer van der Waals (vdW) material sheets, which correspond to the nonisometric configuration in bulge tests. Frenkel sinusoidal function is employed to ...
Material Selection Issues for a Nozzle Guide Vane Against Service-Induced Failure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Nozzle guide vanes (NGV) of gas turbine engines are the first components to withstand the impingement of hot combustion gas and therefore often suffer thermal fatigue failures in service. A lifting analysis is performed ...
A Mock Gas Molecules Model for Accurately Simulating Pressure Load at Micro- and Nanoscales
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: At micro- and nanoscales, the gas pressure load is generally simulated by the thermal motion of gas molecules. However, the pressure load can hardly be produced or controlled accurately, because the effects of the wall ...
Multistable Cylindrical Mechanical Metastructures: Theoretical and Experimental Studies
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: An innovative bistable energy-absorbing cylindrical shell structure composed of multiple unit cells is presented in this paper. The structural parameters of the single-layer cylindrical shell structure that produces bistable ...
Quantifying Dispersion of Nanoparticles in Polymer Nanocomposites Through Transmission Electron Microscopy Micrographs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The property of nanocomposites is crucially affected by nanoparticle dispersion. Transmission electron microscopy (TEM) is the “golden standard†in nanoparticle dispersion characterization. A TEM Micrograph is a ...
Model for Total Dissolved Gas Supersaturation from Plunging Jets in High Dams
Publisher: American Society of Civil Engineers
Abstract: The total dissolved gas (TDG) supersaturation that results from dam spillage may cause adverse effects, including increases in the risk of gas-bubble disease and mortality in fish. The accurate prediction of TDG levels is ...