Non Destructive Evaluation using Terahertz Time Domain Spectroscopy and Imaging

ORAL

Abstract

The Terahertz (THz) spectral range has received considerable attention for the development of non-destructive evaluation applications. This is due to the relatively high transmission through most dielectrics and high reflectivity off of metallic surfaces. THz spectroscopy can provide a non-destructive, standoff analysis technique capable of detecting corrosion on metallic surfaces under obscurants and defects in composite materials on aerospace structures. Such techniques have been utilized in the X-ray region of the spectrum, but unlike x-rays, THz is non-ionizing and non-destructive, enabling it to be safer for the user, and cause no harm to the sample. Continuous-wave and time-domain terahertz techniques were used to perform imaging on metallic and composite samples exhibiting corrosion and other defects.

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Authors

  • Lindsay Owens

    Wright State University

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron