Use of continuous scanning LDV for diagnostics

Dario Di Maio

doi:10.1007/978-3-319-30084-9_11

Use of continuous scanning LDV for diagnostics

Dario Di Maio^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

Abstract

Nowadays, diagnostic is an important assessment of integrity of structural components. Amongst the technologies capable of monitoring structural integrity the continuous scanning (CS) measurement method can be a valid alternative in quasi real-time acquisition methods. Its major feature is the capacity of continuously recording vibration response by sweeping a laser beam over a surface. The LDV output signal will be amplitude modulated because of the periodicity of the scanning for a given vibration oscillation. The spectral content of the LDV output signal is made of sidebands, which can be used for representing an Operational Deflection Shape of the structure. This paper proposes a numerical study focused on the changes of the spectral signature of the sidebands when a damage occurs in a structure. The major objective is to map these changes against an undamaged spectral signature and evaluate if this approach can be used for diagnostic purposes.

Original language	English
Title of host publication	Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics
Subtitle of host publication	Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016
Editors	James De Clerck, David S. Epp
Place of Publication	Cham
Publisher	Springer
Pages	127-137
Number of pages	11
Volume	8
ISBN (Electronic)	978-3-319-30084-9
ISBN (Print)	978-3-319-30083-2
DOIs	https://doi.org/10.1007/978-3-319-30084-9_11
Publication status	Published - 2016
Externally published	Yes
Event	34th Conference and Exposition on Structural Dynamics, IMAC 2016 - Orlando, United States Duration: 25 Jan 2016 → 28 Jan 2016 Conference number: 34

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Publisher	Springer
Volume	8
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

Conference

Conference	34th Conference and Exposition on Structural Dynamics, IMAC 2016
Abbreviated title	IMAC
Country/Territory	United States
City	Orlando
Period	25/01/16 → 28/01/16

Keywords

Continuous scanning
Damage
Diagnostics
ODS
Real-time

Access to Document

10.1007/978-3-319-30084-9_11

Cite this

Di Maio, D. (2016). Use of continuous scanning LDV for diagnostics. In J. De Clerck, & D. S. Epp (Eds.), Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics: Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016 (Vol. 8, pp. 127-137). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 8). Springer. https://doi.org/10.1007/978-3-319-30084-9_11

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abstract = "Nowadays, diagnostic is an important assessment of integrity of structural components. Amongst the technologies capable of monitoring structural integrity the continuous scanning (CS) measurement method can be a valid alternative in quasi real-time acquisition methods. Its major feature is the capacity of continuously recording vibration response by sweeping a laser beam over a surface. The LDV output signal will be amplitude modulated because of the periodicity of the scanning for a given vibration oscillation. The spectral content of the LDV output signal is made of sidebands, which can be used for representing an Operational Deflection Shape of the structure. This paper proposes a numerical study focused on the changes of the spectral signature of the sidebands when a damage occurs in a structure. The major objective is to map these changes against an undamaged spectral signature and evaluate if this approach can be used for diagnostic purposes.",

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author = "{Di Maio}, Dario",

year = "2016",

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language = "English",

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Di Maio, D 2016, Use of continuous scanning LDV for diagnostics. in J De Clerck & DS Epp (eds), Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics: Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016. vol. 8, Conference Proceedings of the Society for Experimental Mechanics Series, vol. 8, Springer, Cham, pp. 127-137, 34th Conference and Exposition on Structural Dynamics, IMAC 2016, Orlando, Florida, United States, 25/01/16. https://doi.org/10.1007/978-3-319-30084-9_11

Use of continuous scanning LDV for diagnostics. / Di Maio, Dario.

Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics: Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016. ed. / James De Clerck; David S. Epp. Vol. 8 Cham : Springer, 2016. p. 127-137 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 8).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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PY - 2016

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N2 - Nowadays, diagnostic is an important assessment of integrity of structural components. Amongst the technologies capable of monitoring structural integrity the continuous scanning (CS) measurement method can be a valid alternative in quasi real-time acquisition methods. Its major feature is the capacity of continuously recording vibration response by sweeping a laser beam over a surface. The LDV output signal will be amplitude modulated because of the periodicity of the scanning for a given vibration oscillation. The spectral content of the LDV output signal is made of sidebands, which can be used for representing an Operational Deflection Shape of the structure. This paper proposes a numerical study focused on the changes of the spectral signature of the sidebands when a damage occurs in a structure. The major objective is to map these changes against an undamaged spectral signature and evaluate if this approach can be used for diagnostic purposes.

AB - Nowadays, diagnostic is an important assessment of integrity of structural components. Amongst the technologies capable of monitoring structural integrity the continuous scanning (CS) measurement method can be a valid alternative in quasi real-time acquisition methods. Its major feature is the capacity of continuously recording vibration response by sweeping a laser beam over a surface. The LDV output signal will be amplitude modulated because of the periodicity of the scanning for a given vibration oscillation. The spectral content of the LDV output signal is made of sidebands, which can be used for representing an Operational Deflection Shape of the structure. This paper proposes a numerical study focused on the changes of the spectral signature of the sidebands when a damage occurs in a structure. The major objective is to map these changes against an undamaged spectral signature and evaluate if this approach can be used for diagnostic purposes.

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KW - Real-time

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Di Maio D. Use of continuous scanning LDV for diagnostics. In De Clerck J, Epp DS, editors, Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics: Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016. Vol. 8. Cham: Springer. 2016. p. 127-137. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-30084-9_11

Use of continuous scanning LDV for diagnostics

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Keywords

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