Terahertz Computed Tomography Lab at NASA Glen Research Lab

http://www.grc.nasa.gov/WWW/OptInstr/NDElab.html

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NASA Glen Research Lab

OPTICAL INSTRUMENTATION & NDE BRANCH

Laboratories Back to NDE Laboratories Terahertz (THz) Reflection, Thru-transmission, and Computed Tomography LabPurpose: To perform THz reflection, thru-transmission, and computed tomography imaging of materials/structures. Terahertz (THz) Computed Tomagraphy  Advanced Photonix T-Ray 4000, in use    Primary Capabilities: THz tomography and thru-transmission imaging of materials/structures, including those of complex shape. Resolution on the order of 2 – 3 mm in tomography mode. THz slice imaging of materials/structures to obtain qualitative and quantitative information on features of interest such as inclusions, voids, delaminations in dielectric materials. Able to analyze thermal protection system materials, foams, molded plastics, PVC pipes, reinforced fiber composites (glass, Kevlar, xylon fibers), insulating ceramics, dry woods, glass, non-conductive woven fabrics, and non polar liquids such as fuels and oils. Capable of volume rendering of obtained slices for 3d views. Time domain and frequency domain measurements. Reflection mode THz imaging for dielectric materials on top of substrate (layered materials such as coated metals or ceramics). Provides excellent time/depth resolution capability in (future) reflection mode for coating measurements. Special/Unique Capability: 3D Imaging Only Terahertz Tomography system in existance that can examine samples as large as 6" x 6"". (Maximum weight of sample is 5 kg or 11.02 lb. Can analyze complex shapes. Optimal spatial resolution 300 microns in scanning reflection mode. Availability: Supports research in Optical Instrumentation and NDE Branch. Building 6, Room 15. POC: Dr. Don Roth 216-433-6017.