๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

ON THE USE OF A RISING-FALLING CHIRP EXCITATION FOR VIBRATION TESTING

โœ Scribed by A.P. Burrows; K. Worden; J.R. Wright

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
384 KB
Volume
192
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

The practice of using rising-falling chirps (i.e., those that sweep up and down in frequency) in vibration testing is considered. This type of chirp is shown to have an amplitude spectrum which exhibits severe drop-outs in amplitude at many frequencies in the excitation bandwidth. It will lead to Frequency Response Function (FRF) estimates that are very sensitive to noise and should not be used.

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