Numerical Time Reversal Processing for Impact Detection Using Surface Bonded Piezoceramic
Time reversal processing for measured sensor signal can be applied to detect not only structural damage but also impact loading of the structure. In this study, a model based impact detection method for structural health monitoring is proposed. Impact identification capability of the numerical time reversal processing is demonstrated by using a rectangular aluminum plate with nine surface bonded piezoceramic sensors. Illustrative numerical simulation results indicate that the proposed method can be successfully identifying both exact impact point and time.Copyright © 2005 by ASME
We have reformulated the inverse scattering problem using the parameters that characterize the polarization of the remote sensing wave rather than the usual frequency of angle variables and apply it to the problem of remote sensing of a radially layered cylinder. We construct an algorithm for solving this inverse problem based on the Newton-Kantorovich method and discuss some examples