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RISSpectral Analysis of Nonlinear Water Waves Based on the Hilbert-Huang Transformation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Hilbert-Huang transformation (HHT) is a new method for analyzing nonlinear and non-stationary data series. The central idea behind the HHT is the so-called empirical mode decomposition (EMD) ...
Statistical Classification of Spectral Data for Laser Weld Quality Monitoring
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Signals from several sensors were employed for real-time laser weld quality monitoring. Sheet-metal butt-joint laser welds of three quality classes (full penetration, partial penetration, gapped) ...
Analysis of Contact Deformation and Stiction Between Textured Disk and Textured Slider
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To meet the ever-increasing magnetic recording density, the hard disk industry is focusing on reducing flying height. Texturing the slider surface to reduce the head–disk contact area is one ...
Steady-State Limit of Elastoplastic Trusses for the Plastic Shakedown Region
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For elastoplastic trusses under quasi-static cyclic loading, a method is presented for finding the steady-state limit that bounds the plastic shakedown and ratchetting regions. In the plastic ...
Active Steering Control Based on the Estimated Tire Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Steered vehicles on slippery roads tend to slide outward with less lateral force than on high friction roads. In this paper, an active steering control method is proposed such that the vehicles ...
Instability Boundary for Rotor-Hydrodynamic Bearing Systems, Part 2: Rotor With External Flexible Damped Support
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A rotor-hydrodynamic bearing system having external flexible damped bearing supports is more complicated than that discussed in Part 1 but it can provide a means to improve the stability of ...
Instability Boundary for Rotor-Hydrodynamic Bearing Systems, Part 1: Jeffcott Rotor With External Damping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The instability of rotor-hydrodynamic bearing systems has been a major concern in high-speed rotating machine design. The threshold speed is usually considered to be a barrier that cannot be ...
A Method for the Validation of Predictive Computations Using a Stochastic Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Stochastic finite element methods provide predictions of the behavior of mechanical systems with randomly fluctuating material properties. Limited data is typically available for the characterization ...
Workspace Optimization of 3-Legged UPU and UPS Parallel Platforms With Joint Constraints
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper the workspace optimization of 3-legged translational UPU and orientational UPS parallel platforms under joint constraints is performed. The workspace of both platforms is parametrized ...
On Higher-Order Crack-Tip Fields in Creeping Solids
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In view of the near-tip constraint effect imposed by the geometry and loading configuration, a creep fracture analysis based on C* only is generally not sufficient. This paper presents a ...