Modal testing of a composite bladed disc using travelling wave excitation method

D. Di Maio; M. Vater; R. Seidel; S. Foglia

doi:10.1007/978-3-319-74700-2_4

Modal testing of a composite bladed disc using travelling wave excitation method

D. Di Maio^*
, M. Vater
, R. Seidel
, S. Foglia

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

This research article presents a novel application of travelling wave excitation method applied to a composite bladed disc. The objective of this work is to develop a non-contact excitation method for research applications where (i) blades are non-ferromagnetic and (ii) damping is nominally high. This goal was achieved by spinning a disc, on which 14 powerful DC magnets were installed, in front the composite bladed disc. Small DC magnets were attached near each blade root to provide repellent forces. Twenty blades were manufactured with pre-pregs IM7–8552, using unidirectional stacking sequence and were installed on a rigid metallic mounting hub. The paper will present the design and make of the bladed disc, the theoretical study of normal and tangential forces in a magnet-to-magnets configuration and, finally, the experimental validation of a 14-DC magnetic exciter. The forced responses were measured in one test case by a 3D single point LDV system and in another test case by a Scanning LDV system. This work will also present an attempt to develop a DC electromagnetic exciter with its limitation and potential.

Original language	English
Title of host publication	Topics in Modal Analysis and Testing
Subtitle of host publication	Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018
Editors	Brandon J. Dilworth, Michael Mains
Place of Publication	Cham
Publisher	Springer
Pages	25-41
Number of pages	17
Volume	9
ISBN (Electronic)	978-3-319-74700-2
ISBN (Print)	978-3-319-74699-9
DOIs	https://doi.org/10.1007/978-3-319-74700-2_4
Publication status	Published - 2019
Externally published	Yes
Event	36th Conference and Exposition on Structural Dynamics, IMAC 2018 - Orlando, United States Duration: 12 Feb 2018 → 15 Feb 2018 Conference number: 36 https://www.tsnn.com/events/imacxxxvi-conference-exposition-structural-dynamics

Publication series

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

Conference

Conference	36th Conference and Exposition on Structural Dynamics, IMAC 2018
Abbreviated title	IMAC
Country/Territory	United States
City	Orlando
Period	12/02/18 → 15/02/18
Internet address	https://www.tsnn.com/events/imacxxxvi-conference-exposition-structural-dynamics

Keywords

Composites
Excitation methods
Vibration testing

Access to Document

10.1007/978-3-319-74700-2_4

Cite this

Di Maio, D., Vater, M., Seidel, R., & Foglia, S. (2019). Modal testing of a composite bladed disc using travelling wave excitation method. In B. J. Dilworth, & M. Mains (Eds.), Topics in Modal Analysis and Testing: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018 (Vol. 9, pp. 25-41). (Conference Proceedings of the Society for Experimental Mechanics Series). Springer. https://doi.org/10.1007/978-3-319-74700-2_4

Di Maio, D. ; Vater, M. ; Seidel, R. et al. / Modal testing of a composite bladed disc using travelling wave excitation method. Topics in Modal Analysis and Testing: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. editor / Brandon J. Dilworth ; Michael Mains. Vol. 9 Cham : Springer, 2019. pp. 25-41 (Conference Proceedings of the Society for Experimental Mechanics Series).

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title = "Modal testing of a composite bladed disc using travelling wave excitation method",

abstract = "This research article presents a novel application of travelling wave excitation method applied to a composite bladed disc. The objective of this work is to develop a non-contact excitation method for research applications where (i) blades are non-ferromagnetic and (ii) damping is nominally high. This goal was achieved by spinning a disc, on which 14 powerful DC magnets were installed, in front the composite bladed disc. Small DC magnets were attached near each blade root to provide repellent forces. Twenty blades were manufactured with pre-pregs IM7–8552, using unidirectional stacking sequence and were installed on a rigid metallic mounting hub. The paper will present the design and make of the bladed disc, the theoretical study of normal and tangential forces in a magnet-to-magnets configuration and, finally, the experimental validation of a 14-DC magnetic exciter. The forced responses were measured in one test case by a 3D single point LDV system and in another test case by a Scanning LDV system. This work will also present an attempt to develop a DC electromagnetic exciter with its limitation and potential.",

keywords = "Composites, Excitation methods, Vibration testing",

author = "\{Di Maio\}, D. and M. Vater and R. Seidel and S. Foglia",

year = "2019",

doi = "10.1007/978-3-319-74700-2\_4",

language = "English",

isbn = "978-3-319-74699-9",

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series = "Conference Proceedings of the Society for Experimental Mechanics Series",

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editor = "Dilworth, \{Brandon J.\} and Michael Mains",

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note = "36th Conference and Exposition on Structural Dynamics, IMAC 2018, IMAC ; Conference date: 12-02-2018 Through 15-02-2018",

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Di Maio, D, Vater, M, Seidel, R & Foglia, S 2019, Modal testing of a composite bladed disc using travelling wave excitation method. in BJ Dilworth & M Mains (eds), Topics in Modal Analysis and Testing: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. vol. 9, Conference Proceedings of the Society for Experimental Mechanics Series, Springer, Cham, pp. 25-41, 36th Conference and Exposition on Structural Dynamics, IMAC 2018, Orlando, Florida, United States, 12/02/18. https://doi.org/10.1007/978-3-319-74700-2_4

Modal testing of a composite bladed disc using travelling wave excitation method. / Di Maio, D.; Vater, M.; Seidel, R. et al.
Topics in Modal Analysis and Testing: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. ed. / Brandon J. Dilworth; Michael Mains. Vol. 9 Cham: Springer, 2019. p. 25-41 (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 - Modal testing of a composite bladed disc using travelling wave excitation method

AU - Di Maio, D.

AU - Vater, M.

AU - Seidel, R.

AU - Foglia, S.

N1 - Conference code: 36

PY - 2019

Y1 - 2019

N2 - This research article presents a novel application of travelling wave excitation method applied to a composite bladed disc. The objective of this work is to develop a non-contact excitation method for research applications where (i) blades are non-ferromagnetic and (ii) damping is nominally high. This goal was achieved by spinning a disc, on which 14 powerful DC magnets were installed, in front the composite bladed disc. Small DC magnets were attached near each blade root to provide repellent forces. Twenty blades were manufactured with pre-pregs IM7–8552, using unidirectional stacking sequence and were installed on a rigid metallic mounting hub. The paper will present the design and make of the bladed disc, the theoretical study of normal and tangential forces in a magnet-to-magnets configuration and, finally, the experimental validation of a 14-DC magnetic exciter. The forced responses were measured in one test case by a 3D single point LDV system and in another test case by a Scanning LDV system. This work will also present an attempt to develop a DC electromagnetic exciter with its limitation and potential.

AB - This research article presents a novel application of travelling wave excitation method applied to a composite bladed disc. The objective of this work is to develop a non-contact excitation method for research applications where (i) blades are non-ferromagnetic and (ii) damping is nominally high. This goal was achieved by spinning a disc, on which 14 powerful DC magnets were installed, in front the composite bladed disc. Small DC magnets were attached near each blade root to provide repellent forces. Twenty blades were manufactured with pre-pregs IM7–8552, using unidirectional stacking sequence and were installed on a rigid metallic mounting hub. The paper will present the design and make of the bladed disc, the theoretical study of normal and tangential forces in a magnet-to-magnets configuration and, finally, the experimental validation of a 14-DC magnetic exciter. The forced responses were measured in one test case by a 3D single point LDV system and in another test case by a Scanning LDV system. This work will also present an attempt to develop a DC electromagnetic exciter with its limitation and potential.

KW - Composites

KW - Excitation methods

KW - Vibration testing

UR - https://www.scopus.com/pages/publications/85061356194

U2 - 10.1007/978-3-319-74700-2_4

DO - 10.1007/978-3-319-74700-2_4

M3 - Conference contribution

AN - SCOPUS:85061356194

SN - 978-3-319-74699-9

VL - 9

T3 - Conference Proceedings of the Society for Experimental Mechanics Series

SP - 25

EP - 41

BT - Topics in Modal Analysis and Testing

A2 - Dilworth, Brandon J.

A2 - Mains, Michael

PB - Springer

CY - Cham

T2 - 36th Conference and Exposition on Structural Dynamics, IMAC 2018

Y2 - 12 February 2018 through 15 February 2018

ER -

Di Maio D, Vater M, Seidel R, Foglia S. Modal testing of a composite bladed disc using travelling wave excitation method. In Dilworth BJ, Mains M, editors, Topics in Modal Analysis and Testing: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. Vol. 9. Cham: Springer. 2019. p. 25-41. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-74700-2_4

Modal testing of a composite bladed disc using travelling wave excitation method

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