RESEARCH ARTICLE
Damage Detection of Flexural Member by Estimated Moment Diagram
H.C. Eun1, *, E.T. Lee 2
Article Information
Identifiers and Pagination:
Year: 2007Volume: 1
First Page: 1
Last Page: 7
Publisher ID: TOBCTJ-1-1
DOI: 10.2174/1874836800701010001
Article History:
Received Date: 7/11/2007Revision Received Date: 14/11/2007
Acceptance Date: 14/11/2007
Electronic publication date: 6/12/2007
Collection year: 2007
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
This study considers an analytical method to detect the damage location from the moment diagram calculated by the external forces and the forces required for obtaining the same deflections as the measurement deflections. The measured deflections must be a part of displacements to restrict the static behavior of the damaged beam. The constraint forces acting at measurement points are derived by minimizing the cost function of the displacement change between the undamaged and damaged beams. It is shown that the damage exists near the location that the moment ratio to be expressed by the moment values of the undamaged and damaged beams increases abruptly. However, closely neighboring damages can be found by increasing the number of finite elements and measurement points. The validity of the proposed method is illustrated in an application..