Lamb Wave Tomographic Reconstruction Using Various MART Algorithms
نویسندگان
چکیده
Structural Health Monitoring (SHM) system requires a fast and accurate algorithm for defect detections in the large structures like aircraft skins for which Lamb wave tomography (LWT) appears to be very powerful technique, as their propagation properties depend on the thickness and the mechanical properties of the material. Projection data is collected by electronically scanning an array of ultrasonic sensors arranged in modified crosshole geometry. Extracted energy profile data is used and then final reconstruction is done by various Multiplicative algebraic reconstruction technique (MART) algorithms. Experimental results show that MART is capable of characterizing defects in thin isotropic and composite plates within an error band of ± 20%.
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