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General Information
Prof. T. Hikmet Karakoc
Anadolu University, Faculty of Aeronautics and Astronautics, Turkey

IJET 2013 Vol.5(3): 424-427 ISSN: 1793-8236
DOI: 10.7763/IJET.2013.V5.589

Time Dependent Spectrum Analysis of Transient Signals: Application to Seismic Engineering

Hammoutène Malek and Tiliouine Boualem
Abstract—A data windowing approach is developed to estimate the evolutionary power spectra of strong motion earthquakes. The main properties and the engineering significance of the evolutionary power spectrum of seismic accelerations are first presented. Specific guidelines for optimal windowing to be used in time dependent spectrum analyses of transient signals are then formulated. Based on these guidelines, three moving data window functions and their characteristics are examined with the perspective of studying their effects on both the spectral resolution and the stability of spectral estimates of earthquake strong ground motions. Specific parameter values for which particular data window functions are more suitable to be used in order to obtain reliable estimates of the evolutionary spectral amplitudes are discussed.

Index Terms—Data window functions, nonlinear response spectrum, random process, strong ground motions.

The authors are with the Ecole Nationale Polytechnique, 10 Avenue Hassen Badi, 16200 Algiers, Algeria (e-mail: hammoutene_m@yahoo.fr, tiliouine_b@yahoo.fr).


Cite:Hammoutène Malek and Tiliouine Boualem, "Time Dependent Spectrum Analysis of Transient Signals: Application to Seismic Engineering," International Journal of Engineering and Technology vol. 5, no. 3, pp. 424-427, 2013.

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