Journal of Vibration and Acoustics: Recent submissions
Now showing items 1821-1840 of 3913
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Stochastic Averaging and Optimal Prediction
(The American Society of Mechanical Engineers (ASME), 2007)This work is concerned with the similarity between the two important reduction schemes: optimal prediction and stochastic averaging. To this end, we consider a randomly perturbed Hamiltonian ... -
New Methods for Nonlinear Damping Identification of Damping Alloy
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents two methods for the identification of nonlinear internal damping of alloy. One is the moving autoregressive model (MARM) method, and the other is the time-varying autoregressive ... -
Improving Excitations for Active Sensing in Structural Health Monitoring via Evolutionary Algorithms
(The American Society of Mechanical Engineers (ASME), 2007)Active excitation is an emerging area of study within the field of structural health monitoring whereby prescribed inputs are used to excite the structure so that damage-sensitive features may ... -
Lamb Wave-Mode Tuning of Piezoelectric Wafer Active Sensors for Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2007)An analytical and experimental investigation of the Lamb wave-mode tuning with piezoelectric wafer active sensors (PWASs) is presented. The analytical investigation assumes a PWAS transducer bonded ... -
Beam Forming of Lamb Waves for Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2007)Structural health monitoring techniques are being developed to reduce operations and support costs, increase availability, and maintain safety of current and future air vehicle systems. The use ... -
Experimental Enhanced Nonlinear Dynamics and Identification of Attractor Morphing Modes for Damage Detection
(The American Society of Mechanical Engineers (ASME), 2007)This paper demonstrates two novel methods for identifying small parametric variations in an experimental system based on the analysis of sensitivity vector fields (SVFs) and probability density ... -
3-D Elasticity-Based Modeling of Anisotropic Piezocomposite Transducers for Guided Wave Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2007)Anisotropic piezocomposite transducers (APTs), such as macro fiber composites and active fiber composites, have great potential to be used as structurally integrated transducers for guided-wave ... -
A Potential Link from Damage Diagnostics to Health Prognostics of Composites through Built-in Sensors
(The American Society of Mechanical Engineers (ASME), 2007)This paper explores the potential of integration of damage diagnostics based on built-in sensors with a progressive failure modeling for monitoring and prediction of composite structures, from ... -
Special Issue on Vibration-Based Structural Damage Detection and Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2007)The guest editors are pleased to compile this special issue of the Journal of Vibration and Acoustics on vibration-based damage detection and structural health monitoring. This experience has ... -
Experimental and Numerical Investigation of Structural Damage Detection Using Changes in Natural Frequencies
(The American Society of Mechanical Engineers (ASME), 2007)A robust iterative algorithm is used to identify the locations and extent of damage in beams using only the changes in their first several natural frequencies. The algorithm, which combines a ... -
Using Ambient Vibrations to Detect Loosening of a Composite-to-Metal Bolted Joint in the Presence of Strong Temperature Fluctuations
(The American Society of Mechanical Engineers (ASME), 2007)We present an approach for detecting damage-induced nonlinearities in structures. The method first involves the creation of surrogate data sets conforming to an appropriate null hypothesis (no ... -
Frequency Range Selection for Impedance-Based Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2007)Impedance-based structural health monitoring uses collocated piezoelectric transducers to locally excite a structure at high frequencies. The response of the structure is measured by the same ... -
Small-Amplitude Free-Vibration Analysis of Piezoelectric Composite Plates Subject to Large Deflections and Initial Stresses
(The American Society of Mechanical Engineers (ASME), 2006)A coupled theoretical and computational framework is presented for analyzing the small amplitude-free vibrational response of composite laminated plates with piezoelectric actuators and sensors, ... -
Effects of Frictional Models on the Dynamic Response of the Impact Drive Mechanism
(The American Society of Mechanical Engineers (ASME), 2006)This paper first introduces the effects of various frictional models on the dynamic behaviors of a simple mechanical system with frictional forces, which are described by the Leuven model ... -
Metric Damping of MDOF Systems in High Transient Motion
(The American Society of Mechanical Engineers (ASME), 2006)This paper deals with damping due to transient motion in the case of multi-degree-of-freedom (MDOF) system. The main aim of this research is to make the method presented by the authors in a ... -
On the Mechanism of Stick and Nonstick, Periodic Motions in a Periodically Forced, Linear Oscillator With Dry Friction
(The American Society of Mechanical Engineers (ASME), 2006)In this paper, the dynamics mechanism of stick and nonstick motion for a dry-friction oscillator is discussed. From the theory of in 2005 [Commun. Nonlinear Sci. Numer. Simul., 10, pp. 1–55], ... -
Call for The D'Alembert Award for Multibody System Dynamics and The Lyapunov Award for Nonlinear Dynamics
(The American Society of Mechanical Engineers (ASME), 2006)The Technical Committee on Multibody Systems and Nonlinear Dynamics (MSND-TC) of the ASME Design Engineering Division solicits nominations for the D'Alembert Award and the Lyapunov Award. These ... -
Theoretical and Experimental Investigation of Elevator Cable Dynamics and Control
(The American Society of Mechanical Engineers (ASME), 2006)The vibratory energy of a moving cable in an elevator increases in general during upward movement. A control method is presented to dissipate the energy associated with the lateral vibration ... -
The Two-Degree-of-Freedom Tuned-Mass Damper for Suppression of Single-Mode Vibration Under Random and Harmonic Excitation
(The American Society of Mechanical Engineers (ASME), 2006)Whenever a tuned-mass damper is attached to a primary system, motion of the absorber body in more than one degree of freedom (DOF) relative to the primary system can be used to attenuate ... -
Structronics and Actuation of Hybrid Electrostrictive/Piezoelectric Thin Shells
(The American Society of Mechanical Engineers (ASME), 2006)Certain ferroelectric materials possess dual electrostrictive and piezoelectric characteristics, depending on their specific Curie temperatures. The nonlinear electro-mechanical effect of electrostrictive ...