Abstract
Ultrasonic phased-arrays are used in nondestructive evaluation for detection and characterization of defects. An image is produced by beamforming the array data, which is often enough for detection but not for characterization. More advanced post-processing approaches have been developed to characterize defects based on the scattering behavior. However, in some applications, the defect scattering information cannot be accessed accurately. This is the case in large grained structures where grains act as randomly distributed scatterers contaminating the target information. In this work, we present a fast method to extract an accurate scattering descriptor for a defined region of interest and compare it to other available techniques. This approach reduces the undesired contribution of nearby scatterers by applying spatial filtering to the array data.
How to Cite:
Lopez Villaverde, E. ., Croxford, A. J. & Velichko, A. ., (2019) “Reversible ultrasonic imaging for fast scattering matrix extraction”, Review of Progress in Quantitative Nondestructive Evaluation .
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