Patent ID: 7925455
Filing Date: 2011-04-12
Classification: G01N

Abstract:
1. A method for determining the health of a structural element comprising: providing a plurality of transducer elements; inducing vibration with at least one transducer element of the plurality of transducer elements; measuring vibration with at least one other transducer element of the plurality of transducer elements, the measured vibration corresponding to at least one vibratory path; calculating two or more independent damage index values of different damage index types for each vibratory path of the at least one vibratory path in response to the measured vibration; generating two or more sets damage images, each set consisting of two or more damage images for each damage index type; wherein each of the two or more damage image sets correspond to each of the two or more damage index values; and determining a single damage location by processing the two or more images contained in the two or more sets of damage images by two or more location algorithms; wherein each independent damage index value of the two or more independent damage index values is created using different damage index algorithms on a single data sequence.