Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis

Niels-Jørgen Jacobsen; Palle Andersen; Rune Brincker

Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis

Niels-Jørgen Jacobsen, Palle Andersen, Rune Brincker

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

172 Citations (Scopus)

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Abstract

The presence of harmonic components in the measured responses is unavoidable in many applications of Operational Modal Analysis. This is especially true when measuring on mechanical structures containing rotating or reciprocating parts. This paper describes a new method based on the popular Enhanced Frequency Domain Decomposition technique for eliminating the influence of these harmonic components in the modal parameter extraction process.

For various experiments, the quality of the method is assessed and compared to the results obtained using broadband stochastic excitation forces. Good agreement is found and the method is proven to be an easy-to-use and robust tool for handling responses with deterministic and stochastic content.

Original language	English
Title of host publication	Proceedings of ISMA2006 : International Conference on Noise & Vibration Engineering
Publisher	Katholieke Universiteit
Publication date	2006
Publication status	Published - 2006
Event	International Conference on Noise & Vibration Engineering - Lueven, Belgium Duration: 18 Sept 2006 → 20 Sept 2006

Conference

Conference	International Conference on Noise & Vibration Engineering
Country/Territory	Belgium
City	Lueven
Period	18/09/2006 → 20/09/2006

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title = "Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis",

abstract = "The presence of harmonic components in the measured responses is unavoidable in many applications of Operational Modal Analysis. This is especially true when measuring on mechanical structures containing rotating or reciprocating parts. This paper describes a new method based on the popular Enhanced Frequency Domain Decomposition technique for eliminating the influence of these harmonic components in the modal parameter extraction process. For various experiments, the quality of the method is assessed and compared to the results obtained using broadband stochastic excitation forces. Good agreement is found and the method is proven to be an easy-to-use and robust tool for handling responses with deterministic and stochastic content. ",

author = "Niels-J{\o}rgen Jacobsen and Palle Andersen and Rune Brincker",

year = "2006",

language = "English",

booktitle = "Proceedings of ISMA2006",

publisher = "Katholieke Universiteit",

note = "International Conference on Noise & Vibration Engineering ; Conference date: 18-09-2006 Through 20-09-2006",

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Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis. / Jacobsen, Niels-Jørgen; Andersen, Palle; Brincker, Rune.
Proceedings of ISMA2006: International Conference on Noise & Vibration Engineering. Katholieke Universiteit, 2006.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis

AU - Jacobsen, Niels-Jørgen

AU - Andersen, Palle

AU - Brincker, Rune

PY - 2006

Y1 - 2006

N2 - The presence of harmonic components in the measured responses is unavoidable in many applications of Operational Modal Analysis. This is especially true when measuring on mechanical structures containing rotating or reciprocating parts. This paper describes a new method based on the popular Enhanced Frequency Domain Decomposition technique for eliminating the influence of these harmonic components in the modal parameter extraction process. For various experiments, the quality of the method is assessed and compared to the results obtained using broadband stochastic excitation forces. Good agreement is found and the method is proven to be an easy-to-use and robust tool for handling responses with deterministic and stochastic content.

AB - The presence of harmonic components in the measured responses is unavoidable in many applications of Operational Modal Analysis. This is especially true when measuring on mechanical structures containing rotating or reciprocating parts. This paper describes a new method based on the popular Enhanced Frequency Domain Decomposition technique for eliminating the influence of these harmonic components in the modal parameter extraction process. For various experiments, the quality of the method is assessed and compared to the results obtained using broadband stochastic excitation forces. Good agreement is found and the method is proven to be an easy-to-use and robust tool for handling responses with deterministic and stochastic content.

M3 - Article in proceeding

BT - Proceedings of ISMA2006

PB - Katholieke Universiteit

T2 - International Conference on Noise & Vibration Engineering

Y2 - 18 September 2006 through 20 September 2006

ER -

Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis

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