Stationarity-Based Approach for Lag Length Selection in Cointegration Analysis of Lamb Wave Data

Phong B. Dao 1 Wieslaw J. Staszewski 1
1 Department of Robotics and Mechatronics [Krakow]
Abstract : It is well known that when cointegration is used for the analysis of data in structural health monitoring applications, the choice of lag length has strong influence on damage detection results. The paper demonstrates how this problem could be solved. The solution utilizes the inversely proportional relationship between damage severity and stationarity of cointegration residuals. The method is validated using Lamb wave data from a structure exposed to temperature variations. The experimental results show that the proper lag length selection is essential and this can be achieved with the appropriate statistical analysis.
Keywords : Normalization Guided waves Damage detection and localization
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Conference papers
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Phong B. Dao, Wieslaw J. Staszewski. Stationarity-Based Approach for Lag Length Selection in Cointegration Analysis of Lamb Wave Data. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01020405⟩

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