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Now showing items 1-5 of 5
Machine Learning from Computer Simulations with Applications in Rail Vehicle Dynamics and System Identification
(Virginia Tech, 2016-07-01)
The application of stochastic modeling for learning the behavior of multibody dynamics models is investigated. The stochastic modeling technique is also known as Kriging or random function approach. Post-processing data ...
Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics
(Virginia Tech, 2016-09-28)
The electromechanical design and development of a sophisticated roller rig testing facility at the Railway Technologies Laboratory (RTL) of Virginia Polytechnic and State University (VT) is presented. The VT Roller Rig is ...
Quantitative Laser-based Assessment of Top of Rail Friction Modifiers for Railroad Application
(Virginia Tech, 2016-05-04)
The primary purpose of this study is to assess the effectiveness and utility of laser-based sensors for measuring, quantitatively, the presence and extent of top-of-rail (TOR) friction modifiers that are commonly used in ...
The Application of Doppler LIDAR Technology for Rail Inspection and Track Geometry Assessment
(Virginia Tech, 2016-05-17)
The ability of a Doppler LIDAR (Light Detection and Ranging) system to measure the speed of a moving rail vehicle in a non-contacting manner is extended to capture the lateral and vertical irregularities of the track itself ...
State of the Art Roller Rig for Precise Evaluation of Wheel-Rail Contact Mechanics and Dynamics
(Virginia Tech, 2016-01-25)
The focus of this study is on the development of a state-of-the-art single-wheel roller rig for studying contact mechanics and dynamics in railroad applications. The use of indoor-based simulation tools has become a mainstay ...