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RESEARCH PAPERS: Mechanical Signature Analysis

On the Accuracy of Parametric and Classical Spectra

[+] Author and Article Information
S. Braun

Israel Institute of Technology, Tel Aviv, Israel

A. Sneor

Ada, Haifa, Israel

J. Vib., Acoust., Stress, and Reliab 110(2), 213-219 (Apr 01, 1988) (7 pages) doi:10.1115/1.3269501 History: Received August 15, 1987; Online November 23, 2009

Abstract

This work investigates the accuracy of spectral estimates computed via parametric techniques. Comparisons with results obtained via classical Fourier methods are also presented. The PSD’s (power spectral densities) investigated are of the type encountered in low damped structures excited by random inputs. Qualitative results are shown for simulated as well as experimental data. The results substantiate the claims for the smoothness of parametric spectra, but not the improved resolution capabilities.

Copyright © 1988 by ASME
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