Application of Local Wave Method in the Structural Health Monitoring Signal Decomposition

Abstract:

Health monitoring of the bridge structure has gradually become one of the hot topics. The signal decomposition technology is the key technique of the bridge structural health monitoring. The traditional data analysis and processing methods, which can only be applied to stationary or linear signal processing, have significant limitations. However, the structural response signals tested are mostly non-stationary and nonlinear. So methods that can effectively analyze non-stationary and nonlinear signal are urgently needed. Based on the summarization and analysis of the shortage of wavelet analysis method, the application of local wave method for data processing and analysis in structural health monitoring is put forward. The feasibility and superiority of local wave method is discussed. Experimental simulation results show that the application of local wave method in bridge health monitoring signal decomposition is feasible.

• Periodical: Applied Mechanics and Materials (Volumes 457-458)
• Pages: 969-973
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.457-458.969
• Online since: October 2013
• Authors: Lin Yang
• Keywords: Decomposition, Empirical Mode Decomposition (EMD), IMF, Local Wave Method

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