On the existence of zero-group velocity modes in free rails: Modeling and experiments
Yuning Wu, Ranting Cui, Keping Zhang, Xuan Zhu, John S. Popovics
Topics & Concepts
Fast Fourier transformImpulse (physics)VibrationFinite element methodAmplitudeNormal modeDiscretizationPhysicsImpulse responseCutoffFourier transformCutoff frequencyAcousticsGroup velocityMathematical analysisEngineeringStructural engineeringMathematicsOpticsClassical mechanicsAlgorithmQuantum mechanicsUltrasonics and Acoustic Wave PropagationRailway Engineering and DynamicsStructural Health Monitoring Techniques