Penetrating Imager Technologies

Transcription

1 Penetrating Imager Technologies DOUG MCMAKIN, DAVID SHEEN, AND JANA STRASBURG National Security Directorate ASNT In-space Inspection Workshop 2017 Gilruth Center, Johnson Space Center(JSC), Houston, TX PNNL-SA January 26,

2 Outline PNNL at a Glance NDE at PNNL PNNL Enabling Capabilities Recent Advancements in Holographic Radar Imaging Commercial Partnerships January 26,

3 Pacific Northwest National Laboratory

4 NDE at PNNL: Initiated in 1960 s to support Hanford Liquid Surface Acoustical Holography January 26,

5 NDE at PNNL: Ultrasonics for Commercial Nuclear Power- Cast Stainless Steel (CASS) CASS piping is susceptible to thermal aging and embrittlement CASS microstructure makes examination of welds very difficult Low-frequency phased-array ultrasonic testing with advanced image processing can detect cracking in CASS piping weld specimens PNNL studies have been and are being used as the basis for ASME Code actions and providing a basis for rulemaking related to CASS examinations January 26,

6 Planar Imaging Technique Wideband image reconstruction algorithm has been developed which allows for fully focused 3-D imagery from a planar wideband data set Reconstruction algorithm based almost entirely on Fourier Transforms which are implemented efficiently using the FFT algorithm Algorithm is readily separated into parallel instructions for parallel processing computers y Scanned planar aperture Reconstruction process ( f, x', y ') ( z, x, y) z Transceiver position (x, y, Z) x Target Target point (x, y, z) January 26,

7 Image Resolution Image resolution is determined by the wavelength and the angular extent of the illumination The angular extent can be limited by the size of the aperture (aperture limited), or by the beamwidth of the antenna (antenna limited) Aperture Limited Antenna Limited D R x 4sin( / 2) 2 # # F where F R D January 26, January 26,

8 In-Wall Imaging Structure Inspection Structure Inspection Moisture Inspection January 26,

9 Concrete Wall: Imaging Configuration Imaging wall surface without rebar grid Horizontal aperture: 122 cm Vertical aperture: 102 cm 9 January 26,

10 Concrete Wall: Front Side Image Results Front view 3D projection Top view 3D projection Dynamic range: 30 db Dynamic range: 20 db 10 January 26,

11 NDE at PNNL: Microwaves for Space Debris Effects- Habitat Shielding Task #N06-7 Jan 25, 2006 NASA: Inflatable Habitats Micro-Meteoroid and Orbital Debris Detection PNNL: GHz Scanner with Metal Backing Damage in three layers of Inflatable Habitat MMOD Shielding Madaras EI, RF Anastasi, JP Seebo, GF Studor, DL McMakin, RO Nellums, and WP Winfree "The Potential for Imaging In-Situ Damage in Inflatable Space Structures." 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, vol. 975, no. 1, pp American Institute of Physics, Melville, NY. doi: / January 26,

12 3-D Ground Penetrating Radar Depth 0.3 m 18 m 3.0 m 6 m Twin Waste Storage Tanks - (300 MHz) 12 January 26,

13 Wideband Holographic 3-D RCS Imaging RCS Imaging System has been deployed at numerous locations to analyze LO and VLO targets 13

14 PNNL Enabling Capabilities: Sensing and Phenomenology Physics and phenomenology to design sensors and methods for detecting and characterizing materials and potential threats Infrared Sensing Applied Optics Ultrasonics Non-Destructive Evaluation Electromagnetics Spans basic science to deployed systems Fundamental principles and theories Modeling and simulation Component development Laboratory measurements System integration Field deployment campaigns January 26,

15 PNNL Enabling Capabilities: Physics-based Modeling and Simulation State-of-the-art simulation and tools are utilized for sensor design and analysis to explore and optimize methods and signal quality prior to laboratory investigation UltraVision CIVA ANSYS January 26,

16 PNNL Enabling Capabilities: Data Science and Analytics January 26,

17 Recent Advancements: High-definition Advanced Imaging Technology Goals for future imaging portals Higher spatial resolution 6 mm lateral 5 mm depth Polarimetric signatures 3-D data exploitation (ATD) Novel antenna array designs PNNL prototype delivered to TSL for mock passenger screening January 26,

18 Planar and Cylindrical Imaging Comparison GHz planar GHz cylindrical (rotating target sliding 90 o segments) GHz cylindrical (combined 8, 90 o overlapping segments) Combined illumination - is very complete due to the combination of all 360 o scanned image data January 26,

19 Recent Advancements: Shoe Scanners Imaging based approach to detect anomalies in passenger shoes in portal security screening scenario Millimeter-wave array in floor of existing portal January 26,

20 Anomalous Objects Detection within Shoe Sole 20 January 26, January 26, 2017 January 26,

21 Recent Advancements: Standoff Millimeter wave Imaging January 26,

22 Commercial Partnerships: Airport Security Screening 1 st Generation Systems 250 Airports 1350 deployed worldwide January 26,

23 Commercial Partnerships: Advancements Address Privacy Issues L-3 ProVision, Operators remote location January 26,

24 Summary PNNL has over 50 years of technical leadership in non-destructive examination techniques across a wide variety of phenomenologies and domains Including 120 projects with NASA since 1985 PNNL is organized and outfitted to develop new and novel inspection technologies and continues to push the state of the art with new innovations PNNL has a strong track record of technology transfer and commercialization January 26,

25 Acknowledgements Portions of the work described in this presentation were conducted with funding from the United States Department of Homeland Security, Science and Technology Directorate Explosives Division. January 26,

26 Questions January 26,