Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6753
Title: Sensor placement for structural damage detection considering measurement uncertainties
Authors: Zhou, XQ
Xia, Y 
Hao, H
Keywords: Damage detection
Vibration method
Sensor placement
Uncertainty
Issue Date: May-2013
Publisher: Multi-Science
Source: Advances in structural engineering, May 2013, v. 16, no. 5, p. 899-908 How to cite?
Journal: Advances in structural engineering 
Abstract: Structural damage detection methods using vibration measurements have been developed for decades. Measurement selections may affect damage detection results, because inevitable uncertainties are involved in vibration testing. A new sensor placement index is defined as the ratio of two parameters, namely, the contribution of measurement points to a Fisher information matrix, and the damage sensitivity to the measurement noise. A large value of the contribution vector represents that the corresponding measurement points are sensitive to the damage and measurements at these points are more prominent for structural damage identification, whereas a small noise sensitivity value indicates measurement points that are less influenced by noises. Consequently, the points with large index values are chosen as the measurement subset. The effectiveness of the proposed technique is verified using a laboratory-tested steel frame. The damage detection using different measurement selection schemes shows that the present technique can identify multiple damages of the structure more accurately. The effect of the measurement number is also investigated.
URI: http://hdl.handle.net/10397/6753
ISSN: 1369-4332
EISSN: 2048-4011
DOI: 10.1260/1369-4332.16.5.899
Rights: © Multi-Science Publishing
Posted with permission of the publisher.
Appears in Collections:Journal/Magazine Article

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