Journal of Vibration and Acoustics: Recent submissions
Now showing items 2421-2440 of 3913
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Transverse Vibration of a Rectangularly Orthotropic Spinning Disk, Part 2: Forced Vibration and Critical Speeds
(The American Society of Mechanical Engineers (ASME), 1999)The transverse forced vibration of a rectangularly orthotropic spinning disk is investigated. The disk is subjected to a constant stationary point-load. Although the deflection of an isotropic ... -
Numerical Estimation of End Corrections in Extended-Duct and Perforated-Duct Mufflers
(The American Society of Mechanical Engineers (ASME), 1999)One-dimensional models for extended-duct and perforated-duct mufflers require the introduction of end corrections in order to account for multidimensional effects at the junctions. In this paper, ... -
Analytical Characterization of the Unique Properties of Planetary Gear Free Vibration
(The American Society of Mechanical Engineers (ASME), 1999)This work develops an analytical model of planetary gears and uses it to investigate their natural frequencies and vibration modes. The model admits three planar degrees of freedom for each ... -
Transverse Vibration of a Rectangularly Orthotropic Spinning Disk, Part 1: Formulation and Free Vibration
(The American Society of Mechanical Engineers (ASME), 1999)The transverse vibration of a spinning circular disk with rectangular orthotropy is investigated. Two dimensionless parameters are established in order to characterize the degree of disk anisotropy ... -
A Time-Frequency Distribution for Analysis of Signals with Transient Components and Its Application to Vibration Analysis
(The American Society of Mechanical Engineers (ASME), 1999)Bilinear time-frequency distributions, which provide simultaneous high resolution in both time and frequency domains, offer advantages for the analysis of vibration signals where the harmonic ... -
Analysis of Acousto-Ultrasonic Characteristics for Contact-Type Transducers Coupled to an Orthotropic Composite Plate
(The American Society of Mechanical Engineers (ASME), 1999)Acousto-ultrasonic input-output characteristics for contact-type transmitting and receiving transducers coupled to a thin orthotropic composite plate are analyzed in this paper. By introducing the ... -
Analytical Implementation of Wave-Absorbing Control for Flexible Beams Using Synchronization Condition
(The American Society of Mechanical Engineers (ASME), 1999)For wave-absorbing control, the ideal controller transfer function H(s), which connects the sensor output to the control force, contains the imaginary unit i = −1 explicitly. Therefore, H(s) ... -
A Study of Control Strategies for the Reduction of Structural Vibration Transmission
(The American Society of Mechanical Engineers (ASME), 1999)A theoretical study of the active control of structural vibration transmission in a multiple isolator system comprising a piece of equipment mounted on a base structure via active mounts is ... -
Characterization of Nonlinear Vibrating Systems Using Internal Feedback and Frequency Response Modulation
(The American Society of Mechanical Engineers (ASME), 1999)The authors have developed a general frequency response function formulation in a previous article that relates the frequency responses of linear and nonlinear systems. This formulation is based ... -
Piezoelectric Array Sensing for Real-Time, Broad-Band Sound Radiation Measurement
(The American Society of Mechanical Engineers (ASME), 1999)This paper proposes a noise radiation sensor consisting of an array of independent piezoelectric patches connected to an adaptive linear combiner. The coefficients of the linear combiner are ... -
On the Energetics of a Spinning Flexible Beam
(The American Society of Mechanical Engineers (ASME), 1999) -
Helicopter Gearbox Fault Detection: A Neural Network Based Approach
(The American Society of Mechanical Engineers (ASME), 1999)One of the most dangerous problems that can occur in both military and civilian helicopters is the failure of the main gearbox. Currently, the principal method of controlling gearbox failure ... -
Torsional Wave Propagation in a Circular Cylinder with a Periodically Corrugated Outer Surface
(The American Society of Mechanical Engineers (ASME), 1999)The paper describes a theoretical study on the speed of torsional elastic waves propagating in a circular cylinder whose outer radius varies periodically as a harmonic function of the axial ... -
Vibration Control of Smart Composite Beams with Embedded Optical Fiber Sensor and ER Fluid
(The American Society of Mechanical Engineers (ASME), 1999)This paper proposes the use of a fiber optic sensor (FOS) and electrorheological (ER) fluid actuator for vibration monitoring of smart composite structures. A new intensity modulated fiber optic ... -
Two-Stage Adaptive Line Enhancer and Sliced Wigner Trispectrum for the Characterization of Faults from Gear Box Vibration Data
(The American Society of Mechanical Engineers (ASME), 1999)Impulsive sound and vibration signals in gears are often associated with faults which result from impacting and as such these impulsive signals can be used as indicators of faults. However it ... -
Modelling a Structural-Acoustic Coupled System with an Equivalent Lumped Parameter Mechanical System
(The American Society of Mechanical Engineers (ASME), 1999)This paper describes the way in which a structural acoustic coupled system can be modelled using an equivalent lumped parameter mechanical model. The impedance-mobility approach is first used ... -
On Stability of Time-Varying Multidimensional Linear Systems
(The American Society of Mechanical Engineers (ASME), 1999)In this Technical Brief, a sufficient condition to guarantee the exponential stability for a time-varying system Ẍ + DẊ + K (t)X = 0 is obtained. We mainly made up the condition by ... -
Dynamic Effects in Elastothermodynamic Damping of Metal-Matrix Composites with Spherical Reinforcement
(The American Society of Mechanical Engineers (ASME), 1999)When a composite material is subjected to a time varying strain field, energy is dissipated because of the thermoelastic effect (elastothermodynamic damping or ETD). Evaluation of ETD in ... -
On Equivalent Linearization Using Wavelet Transform
(The American Society of Mechanical Engineers (ASME), 1999)This paper proposes a wavelet-based formulation for linearizing a base-excited single-degree-of-freedom nonlinear system to a time-variant linear (TVL) system. The given system is assumed to be ... -
Experimental Robust Control of Structural Acoustic Radiation
(The American Society of Mechanical Engineers (ASME), 1999)This work addresses the design and application of robust controllers for structural acoustic control. Both simulation and experimental results are presented. H∞ and μ-synthesis design methods were ...