Nondestructive evaluation of aircraft composites using terahertz time domain spectroscopy

Author

Stoik, Christopher D. ; Bohn, Matthew J. ; Blackshire, James L.

Author_Institution

Air Force Inst. of Technol., Wright-Patterson AFB, OH

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

1

Lastpage

2

Abstract

Terahertz time domain spectroscopy was used for nondestructive evaluation of aircraft glass fiber composites stressed with bending and heating damage. Refractive index and absorption coefficients were measured for both damaged and undamaged composites. The two dimensional extent of the heat damage could be shown with either a simple phase or amplitude terahertz imaging technique.

Keywords

absorption coefficients; aerospace materials; aircraft; bending; composite materials; glass fibres; heating; nondestructive testing; refractive index; submillimetre wave imaging; terahertz spectroscopy; absorption coefficient; aircraft glass fiber composites; amplitude terahertz imaging technique; bending; heating; nondestructive evaluation; refractive index; terahertz time domain spectroscopy; Absorption; Aircraft manufacture; Coatings; Composite materials; Etching; Frequency; Glass; Military aircraft; Optical refraction; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on

Conference_Location

Pasadena, CA

Print_ISBN

978-1-4244-2119-0

Electronic_ISBN

978-1-4244-2120-6

Type

conf

DOI

10.1109/ICIMW.2008.4665841

Filename

4665841