METHOD AND SYSTEM FOR THE NON-DESTRUCTIVE TESTING OF A MECHANICAL PART

A method for non-destructive testing of a mechanical part by a multi-element transducer having piezoelectric elements, where:for each element e(i) of the transducer, the emission of an ultrasonic wave at a given frequency and measurement, by each element e(j) distinct from the element e(i), of a time-varying signal kij(t) representing the back-scattered ultrasonic wave received by the element e(j);the determination of a first matrix of time-varying components based on measured signals kij(t), i, j=1, . . . , N;the determination of a second matrix of frequency components corresponding to a determined frequency based on the frequency of the ultrasonic wave by applying a Fourier transform to said first matrix;the filtering of said second matrix comprising a projection of it onto a single scattering sub-space determined by means of a numerical calculation using a ray tracing algorithm; andthe verification of the integrity of the mechanical part by using said filtered second matrix.