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Using the vibration envelope as a damage-sensitive feature in composite beam structures

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journal contribution
posted on 28.04.2015 by Stavros Kasinos, Alessandro Palmeri, Mariateresa Lombardo
A novel approach of damage detection in composite steel-concrete composite beams is suggested. Based on the idea of using the envelope's profile deflections and rotations induced by a moving load, this approach can lead to a practical cost-effective alternative to the traditional use of accelerometers and laser vibrometers.A parametric study has been undertaken, quantifying the sensitivity of the dynamic response of a realistic composite bridge to the presence of damage at different levels of partial steel-concrete interaction and velocity of the moving load.When compared to shifts in the natural frequencies, it has been verified that the proposed approach generally enjoys a higher sensitivity (so damage can be detected at an early stage), is more effective when closer to the ends of the bridge (where shear studs are more likely to be damaged), and displays an ordered set of results (which would reduce the possibility of a false damage).Further work is required to assess the effects of uncertainties and the adoption of more refined models for the moving load.

Funding

The present research was conducted as part of the ENSURE scheme of Loughborough University, whose financial contribution is gratefully acknowledged.

History

School

  • Architecture, Building and Civil Engineering

Published in

Structures

Volume

1

Pages

67 - 75

Citation

KASINOS, S., PALMERI, A. and LOMBARDO, M., 2015. Using the vibration envelope as a damage-sensitive feature in composite beam structures. Structures, 1, pp. 67-75.

Publisher

Elsevier Ltd / © The Institution of Structural Engineers

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This article was published in the journal Structures [Elsevier Ltd / © The Institution of Structural Engineers] and the definitive version is available at: http://dx.doi.org/10.1016/j.istruc.2014.10.001

eISSN

2352-0124

Language

en

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