Reliability Aspects and Multi-Parameter POD Formulation for Guided Wave Based SHM Techniques

Typically, because of uncertainty in the inspection process, capability of NDT systems is expressed by means of suitable POD Curve. Based on the Berens’ statistical model, a monotonic expression is established between the Probability of Detection and the flaw size. Although the uncertainty factors differ from a NDT inspection technique to a SHM approach, the same mathematical framework can be implemented. In the present paper, the authors investigated the application of a recently developed, within the NDT field, Multi Parameter POD approach for a GWs based SHM: Finite Element numerical simulations as well as experimental data, derived on aluminium flawed plates, are combined to bring about a “Master” POD curve.