Fig. 8. Fusion of multi-modal non-destructive inspection data for aircraft hidden corrosion detection and quantification. (a) Aircraft lap joint corrosion detection and quantification with multiple measurement methods. (b) Fusion of multi-modal non-destructive inspection data. estimations achieved by using the Kalman filter are of better accuracy and quality. This is a typical application of fusion across time, i.e., new measurement is fused with historical information. February 2022 Example Two: The second example is the fusion of multiple non-destructive inspection data for aircraft corrosion detection and quantification. A lap joint is a typical aircraft structure subject to performance degradation due to the IEEE Instrumentation & Measurement Magazine 33