Please use this identifier to cite or link to this item:
|Title:||Structural damage detection using wireless sensors accounting for data loss||Authors:||Quek, S.T.
|Keywords:||Damage locating vector
Lost data reconstruction
Structural damage detection
|Issue Date:||2009||Citation:||Quek, S.T.,Tran, V.A.,Duan, W.H.,Hou, X.Y. (2009). Structural damage detection using wireless sensors accounting for data loss. Proceedings of SPIE - The International Society for Optical Engineering 7292 (PART 1) : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.814991||Abstract:||This paper addresses the issue of intermittent data loss during transmission of wireless network sensors and the application of the reconstruction signal for damage detection with the damage locating vector (DLV) method. The algorithm makes use of frequencies which contribute significant amount of energy in the signal based on Fourier transform. As the amplitudes are uncertain due to lost data, the Fourier amplitudes are estimated based on least-square fit of only the measured portions of the signal. The lost portions are reconstructed through inverse Fourier transform. The procedure is iterated until the discrepancy between estimated lost portions of two consecutive iterations is below a set threshold. This threshold and the power spectral threshold to demarcate the significant frequencies are selected based on results from numerically simulated signals. The reconstructed signals are used with the DLV method for damage detection to investigate the practicality of this procedure. A cantilever truss structure with a pre-stressed cable was monitored using six wireless sensors. The pre-stressed cable was cut mid-way during random load application and data collection. The results obtained support the use of the reconstructed signal within the framework of the DLV method. © 2009 SPIE.||Source Title:||Proceedings of SPIE - The International Society for Optical Engineering||URI:||http://scholarbank.nus.edu.sg/handle/10635/74376||ISBN:||9780819475527||ISSN:||0277786X||DOI:||10.1117/12.814991|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 13, 2019
checked on Apr 6, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.