Document Type

Article

Publication Date

10-13-2008

Abstract

Terahertz time domain spectroscopy (TDS) was assessed as a nondestructive evaluation technique for aircraft composites. Damage to glass fiber was studied including voids, delaminations, mechanical damage, and heat damage. Measurement of the material properties on samples with localized heat damage showed that burning did not change the refractive index or absorption coefficient noticeably; however, material blistering was detected. Voids were located by TDS transmissive imaging using amplitude and phase techniques. The depth of delaminations was measured via the timing of Fabry-Perot reflections after the main pulse. Evidence of bending stress damage and simulated hidden cracks was also detected with terahertz imaging.

Comments

Sourced from the version of record at OSA:
Stoik, C. D., Bohn, M. J., & Blackshire, J. L. (2008). Nondestructive evaluation of aircraft composites using transmissive terahertz time domain spectroscopy. Optics Express, 16(21), 17039–17051. https://doi.org/10.1364/OE.16.017039. https://doi.org/10.1364/OE.16.017039

Posted on AFIT Scholar in accordance with Gold Open Access Policy Statement for Optics Express, found at: https://www.osapublishing.org/submit/review/open-access-policy-statement.cfm (12-month embargo observed).
© 2008 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.

DOI

10.1364/OE.16.017039

Source Publication

Optics Express

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