Experimental model validation of an aero-engine casing assembly

D. Di Maio*, G. Ramakrishnan, Y. Rajasagaran

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


This work presents an experimental model validation of an aero-engine casing assembly. The objective is to show how to perform an experimental model validation of a casing assembly with bolted flanges. One of the major challenges was given by the unknown geometrical dimensions and material properties of the structure at the outset. This goal could be reached by using modal updating so as to identify the best geometrical and material parameters for the model. Experimental testing was a key contributor in this process, since the test data were used to benchmark the updating process. The updating process highlighted that the model could not be correctly updated until the joints were included. Therefore, the FE model required to be upgraded, by inclusions of joint flexibility, before it could be updated. This paper will present both the upgrading-updating process and the experimental testing carried out on the casing assembly.

Original languageEnglish
Title of host publicationModel Validation and Uncertainty Quantification
Subtitle of host publicationProceedings of the 35th IMAC, A Conference and Exposition on Structural Dynamics 2017
EditorsBabak Moaveni, Robert Barthorpe, Costas Papadimitriou, Israel Lopez, Roland Platz
Place of PublicationCham
Number of pages9
ISBN (Electronic)978-3-319-54858-6
ISBN (Print)978-3-319-54857-9
Publication statusPublished - 2017
Externally publishedYes
Event35th Conference and Exposition on Structural Dynamics, IMAC 2017 - Garden Grove, United States
Duration: 30 Jan 20172 Feb 2017
Conference number: 35

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


Conference35th Conference and Exposition on Structural Dynamics, IMAC 2017
Abbreviated titleIMAC
CountryUnited States
CityGarden Grove


  • Experimental model validation
  • Updating
  • Upgrading

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