A wireless sensing system is designed for application to structural monitoring and damagedetection applications. Embedded in the wireless monitoring module is a two-tier predictionmodel, the auto-regressive (AR) and the autoregressive model with exogenous inputs (ARX),used to obtain damage sensitive features of a structure. To ...

vvThere has been much work published in recent years on the use of vibration characteristicsto detect damage in bridges. Almost all of this work has been based on theassumption that the vibration is linear, i.e. the natural frequencies are not dependent onthe amplitude of oscillation. The aim of the work presented here was to ...

The paper reviews the recent applications of piezoelectric materials in structuralhealth monitoring and repair conducted by the authors. First, commonly used piezoelectricmaterials in structural health monitoring and structure repair are introduced. The analysisof plain piezoelectric sensors and actuators and interdigital ...

With the advancement in materials technology, SHM is becoming a desirable feature to monitor structural integrity with the aim toimprove the reliability and to reduce overall life cost of the structures. Following are the some important areas who have takenlead in the implementation of SHM ...

Structural health management, modeling of composite and smart structures, intelligent control of smart structures and aerospace vehicles, UAV, and optimizationResearch grants awarded $4 Million (with Co-Investigators)Published over 100 papers in archival journals and conference proceedingsJohn Graham Faculty Research Award ...

Empirical mode decomposition (EMD) and Hilbert spectral analysis (HSA) representa desperate attempt to break the suffocating hold on data analysis by the twinassumptions of linearity and stationarity. To analyze the data from nonlinear andnon-stationary processes, various attempts such as Spectrograms, Wavelet analysis,and the ...

Empirical mode decomposition (EMD) and Hilbert spectral analysis (HSA) representa desperate attempt to break the suffocating hold on data analysis by the twinassumptions of linearity and stationarity. To analyze the data from nonlinear andnon-stationary processes, various attempts such as Spectrograms, Wavelet analysis,and the ...

A major focus of the structural engineering community is to develop systemsand structures that can monitor their own structural integrity in real time. Besidespreventing catastrophic failures, on-line damage detection would reduce costs byminimizing maintenance and inspection cycles. One of the most promising means ofdeveloping ...

Dynamic changes resulting from a variety of causes (e.g. structural damage or nonlinearity onset) may disturb or threaten the normal working conditions of a system. The capacity to estimate the mechanical health condition of a structure using remote non-destructive techniques constitutes a substantial plan which allows to ...

Abstract. A wireless sensing system is designed for application to structural monitoring and damagedetection applications. Embedded in the wireless monitoring module is a two-tier prediction model, the autoregressive(AR) and the autoregressive model with exogenous inputs (ARX), used to obtain damage sensitivefeatures of a ...

As a part of vital infrastructure and transportation networks, bridge structures must function safely at alltimes. However, due to heavier and faster moving vehicular loads and function adjustment, such asBusway accommodation, many bridges are now operating at an overload beyond their design capacity.Additionally, the huge ...

This paper presents the application of a novel vibration-based technique for detecting fatiguecracks in structures. The method utilizes the empirical mode decomposition method (EMD) toestablish an effective energy-based damage index. To investigate the feasibility of the method,fatigue cracks of different sizes were introduced ...