METHOD AND APPARATUS FOR DETECTING DAMAGE IN STRUCTURES

摘要

A method including providing time series structural response data from a structure. A plurality of linear surrogate data series is generated from the time series structural response data. A first generalized correlation function is estimated for each linear surrogate data series of the plurality of linear surrogate data series to generate a confidence interval. The same correlation function is estimated for the time series structural response data. The output of the generalized correlation function applied to the structural response data is compared to the confidence interval. A damage-induced nonlinearity in the structure is indicated when the output of the generalized correlation function applied to the structural response data is outside of the confidence interval.