... propose modeling structural vibration sensor output data using nonlinear time-series models. We demonstrate the improved performance of these models over currently used linear models. Whereas existing methods typically use a single sensor’s output for damage detection, we create a combined sensor analysis...

...John Zolock; Robert Greif The main goal of this research was to develop and present a general, efficient, mathematical, and theoretical based methodology to model nonlinear forced-vibrating mechanical systems from time series measurements. A system identification modeling methodology for forced...

...S. J. Loutridis The vibration time series of gear systems exhibit self-similarity. The time-series behavior is characterized by an exponent, known as the scaling exponent. An algorithm is proposed for the estimation of both global and local exponents, thus providing a means of examining the time...

... signal. fault diagnosis time series vibrations structural acoustics autoregressive processes gears helicopters The cost to maintain and replace industrial facilities constitutes a significant portion of the annual operating budget for organization in the manufacturing and processing...

...Bogdan O. Ciocirlan; Dan B. Marghitu In this paper, the analysis of the time evolution of a levitated droplet is proposed. The analysis is composed of two parts: in the first part, a nonlinear dynamics approach was considered to calculate quantities characterizing time series data such as attractor...