Scanning LDV measurement technology for vibration fatigue testing

Fabrizio Magi; Dario Di Maio; Ibrahim Sever

doi:10.1007/978-3-319-30084-9_8

Scanning LDV measurement technology for vibration fatigue testing

Fabrizio Magi, Dario Di Maio^*, Ibrahim Sever

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Vibration fatigue testing is a verification method for structural components. It is rapid and cost efficient, and it is often performed for aero-engine components because it replicates closely stresses under normal operation conditions. This testing methodology is well known for metallic components but it can also be applied to composites for studying failure caused by high cycle fatigue. Resonant frequency decay is usually the main parameter used to assess fatigue behaviour of metallic components at a given excitation level. However for composites this alone is not very useful and severalmeasurement parameters need to be monitored in order to understand the behaviour and develop a set of failure criteria. Scanning LDV is an excellent measurement system which enables a variety of options thanks to its non-contact nature. This manuscript will show how this system can be used for monitoring several parameters during vibration fatigue testing. A custom made control panel called MONTEVERDI and the independent use of the scanning mirrors allow the SLDV to perform several tasks: (1) Phase Lock Loop (PLL) to excite the component always at resonance, (2) measuring of Operational Deflection Shape (ODS) using either step or continuous scanning method, (3) custom calibrated strain measurement and (4) phase portrait for nonlinear vibration analysis. This paper will present the great potential of using SLDV for performing time consuming vibration fatigue testing via an automated control panel.

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	87-94
Number of pages	8
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_8
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
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

Automated testing
Operative deflection shape
Scanning laser Doppler velocimeter
Vibration fatigue

Access to Document

10.1007/978-3-319-30084-9_8

Cite this

Magi, F., Di Maio, D., & Sever, I. (2016). Scanning LDV measurement technology for vibration fatigue testing. 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. 87-94). (Conference Proceedings of the Society for Experimental Mechanics Series). Springer. https://doi.org/10.1007/978-3-319-30084-9_8

Magi, Fabrizio ; Di Maio, Dario ; Sever, Ibrahim. / Scanning LDV measurement technology for vibration fatigue testing. Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics: Proceedings of the 34th IMAC, A Conference and Exposition on Structural Dynamics 2016. editor / James De Clerck ; David S. Epp. Vol. 8 Cham : Springer, 2016. pp. 87-94 (Conference Proceedings of the Society for Experimental Mechanics Series).

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title = "Scanning LDV measurement technology for vibration fatigue testing",

abstract = "Vibration fatigue testing is a verification method for structural components. It is rapid and cost efficient, and it is often performed for aero-engine components because it replicates closely stresses under normal operation conditions. This testing methodology is well known for metallic components but it can also be applied to composites for studying failure caused by high cycle fatigue. Resonant frequency decay is usually the main parameter used to assess fatigue behaviour of metallic components at a given excitation level. However for composites this alone is not very useful and severalmeasurement parameters need to be monitored in order to understand the behaviour and develop a set of failure criteria. Scanning LDV is an excellent measurement system which enables a variety of options thanks to its non-contact nature. This manuscript will show how this system can be used for monitoring several parameters during vibration fatigue testing. A custom made control panel called MONTEVERDI and the independent use of the scanning mirrors allow the SLDV to perform several tasks: (1) Phase Lock Loop (PLL) to excite the component always at resonance, (2) measuring of Operational Deflection Shape (ODS) using either step or continuous scanning method, (3) custom calibrated strain measurement and (4) phase portrait for nonlinear vibration analysis. This paper will present the great potential of using SLDV for performing time consuming vibration fatigue testing via an automated control panel.",

keywords = "Automated testing, Operative deflection shape, Scanning laser Doppler velocimeter, Vibration fatigue",

author = "Fabrizio Magi and {Di Maio}, Dario and Ibrahim Sever",

year = "2016",

doi = "10.1007/978-3-319-30084-9_8",

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booktitle = "Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics",

address = "Germany",

note = "34th Conference and Exposition on Structural Dynamics, IMAC 2016, IMAC ; Conference date: 25-01-2016 Through 28-01-2016",

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Magi, F, Di Maio, D & Sever, I 2016, Scanning LDV measurement technology for vibration fatigue testing. 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, Springer, Cham, pp. 87-94, 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_8

Scanning LDV measurement technology for vibration fatigue testing. / Magi, Fabrizio; Di Maio, Dario; Sever, Ibrahim.
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. 87-94 (Conference Proceedings of the Society for Experimental Mechanics Series).

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

TY - GEN

T1 - Scanning LDV measurement technology for vibration fatigue testing

AU - Magi, Fabrizio

AU - Di Maio, Dario

AU - Sever, Ibrahim

N1 - Conference code: 34

PY - 2016

Y1 - 2016

N2 - Vibration fatigue testing is a verification method for structural components. It is rapid and cost efficient, and it is often performed for aero-engine components because it replicates closely stresses under normal operation conditions. This testing methodology is well known for metallic components but it can also be applied to composites for studying failure caused by high cycle fatigue. Resonant frequency decay is usually the main parameter used to assess fatigue behaviour of metallic components at a given excitation level. However for composites this alone is not very useful and severalmeasurement parameters need to be monitored in order to understand the behaviour and develop a set of failure criteria. Scanning LDV is an excellent measurement system which enables a variety of options thanks to its non-contact nature. This manuscript will show how this system can be used for monitoring several parameters during vibration fatigue testing. A custom made control panel called MONTEVERDI and the independent use of the scanning mirrors allow the SLDV to perform several tasks: (1) Phase Lock Loop (PLL) to excite the component always at resonance, (2) measuring of Operational Deflection Shape (ODS) using either step or continuous scanning method, (3) custom calibrated strain measurement and (4) phase portrait for nonlinear vibration analysis. This paper will present the great potential of using SLDV for performing time consuming vibration fatigue testing via an automated control panel.

AB - Vibration fatigue testing is a verification method for structural components. It is rapid and cost efficient, and it is often performed for aero-engine components because it replicates closely stresses under normal operation conditions. This testing methodology is well known for metallic components but it can also be applied to composites for studying failure caused by high cycle fatigue. Resonant frequency decay is usually the main parameter used to assess fatigue behaviour of metallic components at a given excitation level. However for composites this alone is not very useful and severalmeasurement parameters need to be monitored in order to understand the behaviour and develop a set of failure criteria. Scanning LDV is an excellent measurement system which enables a variety of options thanks to its non-contact nature. This manuscript will show how this system can be used for monitoring several parameters during vibration fatigue testing. A custom made control panel called MONTEVERDI and the independent use of the scanning mirrors allow the SLDV to perform several tasks: (1) Phase Lock Loop (PLL) to excite the component always at resonance, (2) measuring of Operational Deflection Shape (ODS) using either step or continuous scanning method, (3) custom calibrated strain measurement and (4) phase portrait for nonlinear vibration analysis. This paper will present the great potential of using SLDV for performing time consuming vibration fatigue testing via an automated control panel.

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KW - Operative deflection shape

KW - Scanning laser Doppler velocimeter

KW - Vibration fatigue

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SN - 978-3-319-30083-2

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T3 - Conference Proceedings of the Society for Experimental Mechanics Series

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BT - Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics

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A2 - Epp, David S.

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Magi F, Di Maio D, Sever I. Scanning LDV measurement technology for vibration fatigue testing. 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. 87-94. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-30084-9_8

Scanning LDV measurement technology for vibration fatigue testing

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