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- Title
Investigations on a particle filter algorithm for crack identification in beams from vibration measurements.
- Authors
Rangaraj, R.; Pokale, Bharat; Banerjee, Anuradha; Gupta, Sayan
- Abstract
This study focuses on crack identification in beams from vibration measurements using principles of dynamic state estimation. The FEM is used to model the beam with cracked-beam elements that account for the presence of an edge crack under near-tip elasto-plastic conditions. The crack size and its location are treated as the variables that are identified using a particle filter algorithm. A parametric study is first carried out with synthetic measurements to numerically analyze the performance of the algorithm. Subsequently, using measurements acquired from physical experiments involving a cantilever beam subjected to arbitrary excitations, the proposed algorithm is used to identify the size and location of crack-like defects. The proposed method does not require measurements of the undamaged beam, hence, can be used for crack identification in beams for which no earlier measurements are available.
- Subjects
GIRDER vibration; SURFACE cracks; CANTILEVERS; VIBRATION measurements; MONTE Carlo method; NUMERICAL analysis
- Publication
Structural Control & Health Monitoring, 2015, Vol 22, Issue 8, p1049
- ISSN
1545-2255
- Publication type
Article
- DOI
10.1002/stc.1733