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Showing papers in "Journal of Sound and Vibration in 2006"


Journal ArticleDOI
TL;DR: A comprehensive review on the state of the art of Lamb wave-based damage identification approaches for composite structures, addressing the advances and achievements in these techniques in the past decades, is provided in this paper.

1,350 citations


Journal ArticleDOI
TL;DR: In this paper, the performance of wavelet decomposition-based de-noising and wavelet filter based denoising methods are compared based on signals from mechanical defects, and the comparison result reveals that wavelet filters are more suitable and reliable to detect a weak signature of mechanical impulse-like defect signals, whereas the wavelet transform has a better performance on smooth signal detection.

1,104 citations


Journal ArticleDOI
TL;DR: In this article, an elastically mounted magnetic seismic mass moving past a coil, considered previously by several authors, is analyzed in detail. And the overall damping coefficient (part of which is mechanical) is associated with the harvesting and dissipation of energy and also the transfer of energy from the vibrating base into the system.

813 citations


Journal ArticleDOI
TL;DR: DecDeconvolution Approach for the Mapping of Acoustic Sources (DAMAS) as mentioned in this paper removes beamforming characteristics from output presentations, and a unique linear system of equations accounts for reciprocal influence at different locations over the array survey region.

594 citations


Proceedings ArticleDOI
TL;DR: In this article, a semi-analytical finite element (SAFE) method for modeling wave propagation in waveguides of arbitrary cross-section is proposed, and the dispersive solutions are obtained in terms of phase velocity, group velocity, energy velocity, attenuation and cross-sectional mode shapes.

534 citations


Journal ArticleDOI
TL;DR: The analysis results from roller bearing signals with inner-race and out-race faults show that the diagnosis approach based on neural network by using EMD to extract the energy of different frequency bands as features can identify roller bearing fault patterns accurately and effectively and is superior to that based on wavelet packet decomposition and reconstruction.

481 citations


Journal ArticleDOI
TL;DR: In this article, a simple supported beam with different damage levels is used to evaluate the reliability of VBDIT-based damage identification techniques, which use only few mode shapes and/or modal frequencies of the structure that can be easily obtained by dynamic tests.

433 citations


Journal ArticleDOI
TL;DR: In this paper, a time series algorithm is presented for damage identification and localization, where the vibration signals obtained from sensors are modeled as autoregressive moving average (ARMA) time series.

402 citations


Journal ArticleDOI
TL;DR: In this article, a method for estimating the damage location in beam and plate structures is presented, where the estimated mode shapes of the beam are analyzed by the one-dimensional continuous wavelet transform.

374 citations


Journal ArticleDOI
TL;DR: In this paper, an ensemble of cantilever beams is proposed where at the tip of each beam a mass, known as the proof mass, is mounted, and it is shown that such an ensemble can be made into a band-pass filter when dimensions of the beams and masses of the proof masses are chosen appropriately.

371 citations


Journal ArticleDOI
TL;DR: In this paper, a sensitivity-based finite element (FE) model updating is carried out for damage detection in a reinforced concrete beam, which is damaged in the laboratory, and the proposed procedure of FE updating using the modal flexibility residual is promising for the detection of damaged elements.

Journal ArticleDOI
TL;DR: The results demonstrate that access to quiet indoor and outdoor sections of one's dwelling supports health; it produces a lower degree and extent of annoyance and disturbed daytime relaxation, improves sleep and contributes to physiological and psychological well-being.

Journal ArticleDOI
TL;DR: In this paper, the authors use the wavenumber finite/boundary element (WBE) model to model ground and built structures, such as tunnels and tracks, and apply it to surface vibration and tunnel vibration analyses.

Journal ArticleDOI
TL;DR: In this article, a combination of wave and finite element (FE) approaches is presented to calculate the forced response of a structural component using a set of basis functions for the analysis of the structure as a whole.

Journal ArticleDOI
TL;DR: In this paper, a neural network was used to predict ground vibration and frequency by all possible influencing parameters of rock mass, explosive characteristics and blast design, and the correlation coefficient determined by ANN is 0.9994 and 0.9868.

Journal ArticleDOI
TL;DR: In this paper, the authors presented the experimental validation of a numerical model for the prediction of train induced vibrations, where the track geometry is assumed to be invariant with respect to the longitudinal direction, allowing for an efficient solution of the dynamic track-soil interaction problem in the frequency-wavenumber domain.

Journal ArticleDOI
TL;DR: In this article, an approximate solution for the free vibration problem of two-dimensional magneto-electro-elastic laminates is presented to determine their fundamental behavior, which is composed of linear homogeneous elastic, piezoelectric, or magnetostrictive layers with perfect bonding between each interface.

Journal ArticleDOI
TL;DR: The use of the Timoshenko beam model for free vibration analysis of multi-walled carbon nanotubes (CNTs) is discussed in this paper, where the authors show that the frequencies are significantly overpredicted by the Euler beam theory when the length-to-diameter ratios are small and when considering high vibration modes.

Journal ArticleDOI
TL;DR: In this article, an analytical three-dimensional model for the dynamics of a deep underground railway tunnel of circular cross-section is presented, where the tunnel is conceptualised as an infinitely long, thin cylindrical shell surrounded by soil of infinite radial extent.

Journal ArticleDOI
TL;DR: In this article, a load-dependent controller design approach was proposed to solve the problem of multi-objective control for vehicle active suspension systems by using linear matrix inequalities, where the vehicle body mass resides in an interval and can be measured online.

Journal ArticleDOI
TL;DR: In this article, a simple method for time-varying vibration decomposition based on the Hilbert transform is proposed, where the non-stationary frequency of the largest component is estimated as an average function of the instantaneous frequency, and the corresponding envelope is estimated according to synchronous demodulation.

Journal ArticleDOI
TL;DR: In this article, a numerical model is presented to predict vibrations in the free field from excitation due to metro trains in tunnels, where the three-dimensional dynamic tunnel-soil interaction problem is solved with a subdomain formulation, using a finite element formulation for the tunnel and a boundary element method for the soil.

Journal ArticleDOI
TL;DR: In this paper, the authors presented linear thermal buckling and free vibration analysis for functionally graded cylindrical shells with clamped-clamped boundary condition based on temperature-dependent material properties.

Journal ArticleDOI
TL;DR: In this paper, the elastodynamics of 1D periodic materials and finite structures comprising these materials are studied with particular emphasis on correlating their frequency-dependent characteristics and elucidating their pass-band and stop-band behaviors.

Journal ArticleDOI
TL;DR: In this paper, the nonlinear free vibration of embedded multi-wall carbon nanotubes considering intertube radial displacement and the related internal degrees of freedom is investigated by using the incremental harmonic balanced method.

Journal ArticleDOI
TL;DR: In this article, a normal form procedure is computed for a general class of nonlinear oscillators with quadratic and cubic nonlinearities, and the linear perturbation brought by considering a modal viscous damping term is especially addressed in the formulation.

Journal ArticleDOI
TL;DR: In this article, the free bending vibration of rotating tapered beams is investigated by using the dynamic stiffness method, and the expressions for bending rotation, shear force and bending moment at any cross-section of the beam are also obtained in explicit analytical form.

Journal ArticleDOI
TL;DR: In this article, the authors investigate the quality of the information that can be gained from a two-dimensional model of a railway tunnel and analyze the vibration transmission from the tunnel floor to the ground surface for the frequency range relevant to the perception of whole body vibration.

Journal ArticleDOI
TL;DR: In this paper, the natural frequencies for bending vibrations of Timoshenko cracked beams with simple boundary conditions have been obtained, where the beam is modelled as two segments connected by two massless springs (one extensional and another one rotational).

Journal ArticleDOI
TL;DR: In this paper, a 6-degree-of-freedom gear dynamic model including localized tooth defect has been developed, which consists of a spur gear pair, two shafts, two inertias representing load and prime mover and bearings.