Spatial ultrasonic wavefront characterization using a laser parametric curve scanning method

Ultrasonic wavefield imaging (UWI) provides insightful spatial information about ultrasonic wave propagation in planar (2-D) space for nondestructive evaluation and structural health monitoring (NDE-SHM) applications. In all materials, the wavefronts of incident reflected waves propagate with unique patterns that may be represented by parametrized polar curves 2-D geometric space. this paper, a wavefront characterization method based on parametric curve laser scan is proposed to characterize both isotropic anisotropic materials. Three (circular, hyperbolic, cyclic-harmonic curves) were considered. Two process carried out, namely (i) deciding equation closed-form plane via UWI, (ii) measuring updating ultrasound interrogation system (LUIS) quantifying values(s) predicted using temporal cross-correlation technique. The was tested pristine aluminum cross-ply CFRP plates plates. non-fiber direction region (105°??S?165°) fiber (165°??S?195°) plate considered test. circle showed ability S0 A0 modes plate, respectively, followed hyperbolic scan. With promising results obtained method, integration scanning into LUIS provide new approach damage detection useful algorithm design NDE-SHM