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RISFreezing Rain: An Observational and Theoretical Study
Publisher: American Meteorological Society
Abstract: Data from a Doppler radar, an instrumented aircraft, and several rawinsonde observations during freezing rain and ice pellet events have been analyzed for this study. From these data, 34 soundings were obtained that ...
Tension and Charpy V-Notch Impact Properties of Wire Arc Additively Manufactured ER70S-6
Publisher: American Society of Civil Engineers
Abstract: Wire arc additively manufactured (WAAM) steels cannot be adopted into civil structures until knowledge of their material behaviors is expanded. American Welding Society (AWS) ER70S-6 is a common welding wire feedstock ...
An Approach for Model Updating of a Multiphysics MEMS Micromirror
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, a general approach is formulated for updating the parameters of systems governed by multiphysics equations. The optimization technique is based on Genetic Algorithms (GAs). GAs ...
Chinese Contractors in Africa: Home Government Support, Coordination Mechanisms, and Market Entry Strategies
Publisher: American Society of Civil Engineers
Abstract: Africa is a traditional overseas market for Chinese contractors. Since the launch of “going out’ national strategy in the new century, and with the support and control of the government and subordinate agencies, associations ...
Disturbance Modeling and Prediction of ClosedLoop MicroActuator Stroke Usage in DualStage Hard Disk Drives
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This letter presents a method to model the disturbance environment of a dualstage hard disk drive (HDD), which is then used to predict the actuator stroke usage (i.e., the range of actuator displacement used) of a closedloop ...
Constitutive Behavior and Temperature Effects in NR and SBR Under Variable Amplitude and Multiaxial Loading Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Knowledge of the stress response of a material to the applied deformations is necessary for many engineering analysis and applications. This paper addresses the observed effects of load sequencing, ...
Nonlinear Transient Dynamics of Pendulum Torsional Vibration Absorbers—Part II: Experimental Results
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents results from an experimental investigation of the transient response of centrifugal pendulum vibration absorbers, including a comparison with the analytical results derived in the companion paper, Part ...
Nonlinear Transient Dynamics of Pendulum Torsional Vibration Absorbers—Part I: Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transient dynamics of centrifugal pendulum vibration absorbers, which are used for reducing torsional vibrations in rotating machines, are investigated using analysis and simulations of a dynamical model. These absorbers ...
Mars Atmosphere Pressure Periodicities from Viking Observations
Publisher: American Meteorological Society
Abstract: The first martian year of pressure data taken by the Viking landers on Mars is subjected to power spectrum analysis. The analysis suggests that strong periodicities are present in the martian atmosphere, especially at the ...
Rotor Model Validation for an Active Magnetic Bearing Machining Spindle Using Mu-Synthesis Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Model-based identification and μ-synthesis are employed for model updating of the rotor for a high-speed machining spindle supported on active magnetic bearings. The experimentally validated model ...