Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates
Enhanced frequency domain decomposition (EFDD) is one of OMA methods and has received significant interest from the engineering community involved in the identification of the modal structure. The great attention towards this method is driven by its capability as a user-friendly and fast processing...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
JVE International
2018-08-01
|
Series: | Journal of Vibroengineering |
Subjects: | |
Online Access: | https://www.jvejournals.com/article/19058 |
id |
doaj-8c44d5e5004f4dceb1f92db9a90ffe6b |
---|---|
record_format |
Article |
spelling |
doaj-8c44d5e5004f4dceb1f92db9a90ffe6b2020-11-24T21:17:18ZengJVE InternationalJournal of Vibroengineering1392-87162538-84602018-08-012051919193610.21595/jve.2018.1905819058Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimatesM. Danial A. Hasan0Z. A. B. Ahmad1M. Salman Leong2L. M. Hee3Institute of Noise and Vibration, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, MalaysiaInstitute of Noise and Vibration, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, MalaysiaInstitute of Noise and Vibration, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, MalaysiaInstitute of Noise and Vibration, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, MalaysiaEnhanced frequency domain decomposition (EFDD) is one of OMA methods and has received significant interest from the engineering community involved in the identification of the modal structure. The great attention towards this method is driven by its capability as a user-friendly and fast processing algorithm. However, this method has drawbacks in providing accurate identification of damping ratios, despite natural frequencies and mode shapes can be computed through assuredly and reasonably accurate estimates. The exact practical computation of modal damping is still an open issue, often leading to biased estimates since the errors are coming from every step in EFDD procedures and mainly due to signal processing. Thus, the computation of modal damping becomes tremendously vital in structural dynamics because modal damping is one of the critical parameters of resonance. This review aims to provide relevant essential information on modal damping for a reliable estimation, reduce uncertainties and define error bounds. A literature review has been carried out to find the best practice criteria for modal parameter identification, in particular, modal damping ratio.https://www.jvejournals.com/article/19058operational modal analysisdamping estimation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
M. Danial A. Hasan Z. A. B. Ahmad M. Salman Leong L. M. Hee |
spellingShingle |
M. Danial A. Hasan Z. A. B. Ahmad M. Salman Leong L. M. Hee Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates Journal of Vibroengineering operational modal analysis damping estimation |
author_facet |
M. Danial A. Hasan Z. A. B. Ahmad M. Salman Leong L. M. Hee |
author_sort |
M. Danial A. Hasan |
title |
Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
title_short |
Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
title_full |
Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
title_fullStr |
Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
title_full_unstemmed |
Enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
title_sort |
enhanced frequency domain decomposition algorithm: a review of a recent development for unbiased damping ratio estimates |
publisher |
JVE International |
series |
Journal of Vibroengineering |
issn |
1392-8716 2538-8460 |
publishDate |
2018-08-01 |
description |
Enhanced frequency domain decomposition (EFDD) is one of OMA methods and has received significant interest from the engineering community involved in the identification of the modal structure. The great attention towards this method is driven by its capability as a user-friendly and fast processing algorithm. However, this method has drawbacks in providing accurate identification of damping ratios, despite natural frequencies and mode shapes can be computed through assuredly and reasonably accurate estimates. The exact practical computation of modal damping is still an open issue, often leading to biased estimates since the errors are coming from every step in EFDD procedures and mainly due to signal processing. Thus, the computation of modal damping becomes tremendously vital in structural dynamics because modal damping is one of the critical parameters of resonance. This review aims to provide relevant essential information on modal damping for a reliable estimation, reduce uncertainties and define error bounds. A literature review has been carried out to find the best practice criteria for modal parameter identification, in particular, modal damping ratio. |
topic |
operational modal analysis damping estimation |
url |
https://www.jvejournals.com/article/19058 |
work_keys_str_mv |
AT mdanialahasan enhancedfrequencydomaindecompositionalgorithmareviewofarecentdevelopmentforunbiaseddampingratioestimates AT zabahmad enhancedfrequencydomaindecompositionalgorithmareviewofarecentdevelopmentforunbiaseddampingratioestimates AT msalmanleong enhancedfrequencydomaindecompositionalgorithmareviewofarecentdevelopmentforunbiaseddampingratioestimates AT lmhee enhancedfrequencydomaindecompositionalgorithmareviewofarecentdevelopmentforunbiaseddampingratioestimates |
_version_ |
1726012984488099840 |