Synthetic Aperture Radar (SAR) Polarimetry for NDE
Tracks
Day of Tutorials
| Monday, June 24, 2024 |
| 1:00 PM - 2:10 PM |
| 408-409 |
Overview
Dr. Matthew Dvorsky | Center for Nondestructive Evaluation, USA
Details
Microwave synthetic aperture radar (SAR) imaging is a technique that is well-suited for a wide variety of nondestructive evaluation (NDE) applications, primarily due to its noncontact nature and ability to inspect dielectric or composite structures. SAR polarimetry is an extension of SAR imaging that makes use of wave polarization, by measuring the polarization of the wave scattered by a target or flaw relative to the illumination wave polarization. This polarization can be used to ascertain critical properties and features of a target or a defect. For example, by measuring the polarization of a wave that is scattered by a surface-breaking crack in metal (or a subsurface crack in a dielectric), we can characterize the orientation and size of the crack. The same concepts can also be used for other NDE applications such as detecting and characterizing waviness in carbon- and glass-fiber-reinforced composites, determining surface curvature, etc.
This tutorial will begin by explaining the relevant fundamental concepts of microwave signal polarization, including how polarization relates to characterizing defects. Methods to produce and measure polarized signals will be shown, and some example applications and practical challenges will be discussed. The tutorial will conclude with the latest techniques and advances in SAR polarimetry and the potential for future NDE applications.
Speaker
Dr. Matthew Dvorsky
Center for Nondestructive Evaluation
Synthetic Aperture Radar (SAR) Polarimetry for NDE
Biography
Matthew Dvorsky received his B.S. degree in electrical engineering from in 2017 from Missouri University of Science and Technology, and his Ph.D. in electrical engineering in 2022 at Iowa State University (ISU), and he is currently a research scientist at the Center for Nondestructive Evaluation (CNDE). His research interests are in the area of microwave and millimeter-wave polarimetry, 3D synthetic aperture radar imaging, microwave materials characterization, and nondestructive testing.
He was a recipient of the ISU Research Excellence Award, the CNDE Trapp Fellowship, the 2021 IEEE Transactions on Instrumentation and Measurement Outstanding Reviewer Award, the 2019 IEEE International Instrumentation & Measurement Technology Conference (I2MTC) Student Travel Grant Award, the 2019 IEEE International Instrumentation and Measurement Technology Conference Best Student Paper (2nd place), and was a finalist in the 2017 IEEE (International) AP-S Student Design Contest. He was the 2021 and 2022 Graduate Student Representative for the AdCom of the IEEE Instrumentation and Measurement Society, and he is Associate Editor for IEEE Transactions on Instrumentation and Measurement.
