Characterization of Cracks in Beams in Noisy Conditions Using Natural Frequencies

DOI

10.2991/cisia-15.2015.200How to use a DOI?

Keywords

natural frequency; crack, fracture mechanics; damage identification; robustness to noise; beam

Abstract

Natural frequency is the most representative damage feature in the field of structural damage detection. Nevertheless, the functionality of natural frequency to portray damage in noise conditions has not been clarified systematically. With this concern, this study investigates the performance of natural frequency to characterize damage in beams in noisy conditions. The investigation is performed based on using natural frequencies to estimate the location and depth of a crack with its crack flexibility modelled by fracture mechanics principles. Sensitivity to damage together with robustness against noise of natural frequency is studied through analyzing various crack scenarios incorporating noise in measurement. The observations obtained can function as a guideline for the reasonable use of natural frequencies to locate and quantify damage in beam-type structures.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Z. Zhang
AU  - M.S Cao
PY  - 2015/06
DA  - 2015/06
TI  - Characterization of Cracks in Beams in Noisy Conditions Using Natural Frequencies
BT  - Proceedings of the International Conference on Computer Information Systems and Industrial Applications
PB  - Atlantis Press
SP  - 735
EP  - 737
SN  - 2352-538X
UR  - https://doi.org/10.2991/cisia-15.2015.200
DO  - 10.2991/cisia-15.2015.200
ID  - Zhang2015/06
ER  -