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Vol.5, No.3, August 2016. ISSN: 2217-8309 eISSN: 2217-8333
TEM Journal
TECHNOLOGY, EDUCATION, MANAGEMENT, INFORMATICS Association for Information Communication Technology Education and Science |
About the Effectiveness of Several Dissimilarity Estimators used in Damage Assessment
Vasile Iancu, Gilbert-Rainer Gillich, Cristian Paul Chioncel
© 2016 Vasile Iancu, Gilbert-Rainer Gillich, Cristian Paul Chioncel, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)
Citation Information: TEM Journal. Volume 5, Issue 3, Pages 253-262, ISSN 2217-8309, DOI: 10.18421/TEM53-01, August 2016.
Abstract:
This paper introduces a robust method for vibration-based damage assessment, which is based on a mathematical relation contrived by the authors that involves the frequency shifts, the damage size and position. Databases containing damage indicators for all possible damage scenarios, for three types of beams, were developed by involving this mathematical relation. The proposed damage indicator is expressed using the relative frequency shifts. The damage location and severity can be assessed if the relative frequency shifts are derived from measurements at the initial state and periodically afterwards. The paper investigates the effectiveness of several dissimilarity estimators, to find damage involving frequencies measured without and in the presence of noise.
Keywords – Euler-Bernoulli beam, damage assessment, natural frequency, dissimilarity estimation. |
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