Structural response recovery based on improved multi-scale principal component analysis considering sensor performance degradation
MetadataShow full item record
This article proposes an improved multi-scale principal component analysis approach to recover the structural dynamic response in the time domain from data measured by performance-deteriorated sensors. The proposed approach builds on discrete wavelet transform, principal component analysis, and inverse discrete wavelet transform. The main approach is based on a cross-correlation calculation to better preserve the true structural vibration behavior as well as to recover the structural response from data measured by deteriorated sensors. Three sensor performance degradation models are considered in this study. Numerical studies are conducted first to demonstrate the effectiveness and accuracy of the proposed approach to recover the structural vibration response of an example spatial truss model considering sensor performance degradation under different loading scenarios. Experimental data on an in-field benchmark bridge are also analyzed to further validate and demonstrate the performance of the proposed approach.
Showing items related by title, author, creator and subject.
Ma, S.; Jiang, S.; Li, Jun (2019)© 2018 In the real civil structures, material deterioration, overloading and environmental corrosion inevitably lead to sensor performance degradation or sensor fault. Sensor performance degradation or sensor fault usually ...
Damage Identification and Optimal Sensor Placement for Structures under Unknown Traffic-Induced VibrationsLi, Jun; Hao, Hong; Chen, Z. (2015)This paper proposes a damage-identification and optimal sensor-placement approach for structures under unknown traffic-induced vibrations. Response reconstruction is performed for structures under traffic-induced vibrations ...
Structural damage identification with extracted impulse response functions and optimal sensor locationsLi, Jun; Hao, Hong; Fan, X. (2015)This paper presents a structural damage identification approach based on the time domain impulse response functions, which are extracted from the measured dynamic responses with the input available. The theoretical ...