On the use of attractor dimension as a feature in structural health monitoring
Recent works in the vibration-based structural health monitoring community have emphasised the use of correlation dimension as a discriminating statistic in seperating a damaged from undamaged response. This paper explores the utility of attractor dimension as a 'feature' and offers some comparisons between different metrics reflecting dimension. This focus is on evaluating the performance of two different measures of dimension as damage indicators in a structural health monitoring context. Results indicate that the correlation dimension is probably a poor choice of statistic for the purpose of signal discrimination. Other measures of dimension may be used for the same purposes with a higher degree of statistical reliability. The question of competing methodologies is placed in a hypothesis testing framework and answered with experimental data taken from a cantilivered beam.
Citation Information
Publication Year | 2003 |
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Title | On the use of attractor dimension as a feature in structural health monitoring |
DOI | 10.1006/mssp.2002.1521 |
Authors | J.M. Nichols, L.N. Virgin, M.D. Todd, J. D. Nichols |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Mechanical Systems and Signal Processing |
Index ID | 5224258 |
Record Source | USGS Publications Warehouse |
USGS Organization | Patuxent Wildlife Research Center |