Abstract
Ultrasonic inspection is commonly used for Non-Destructive Evaluation (NDE). Phased array ultrasonic transducers (PAUT) enable beamforming and beam steering by implementing electronic time delays. By providing appropriate delays in exciting individual elements, PAUTs can generate a curved wavefront. The authors propose a metamaterial device made of Gradient Refractive Index Phononic Crystals to transform curvature of a wavefront generated from a single element transducer. The manipulation of the wavefront as it passes through holey region, is simulated using the finite element method. Results from experimental studies carried out on a holey plate, designed using this approach are comparable to simulation results. The authors suggest that add-on devices can be designed using this approach for tailoring wave incidence in ultrasonic inspection.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
